The Global Volcanism Program database currently contains 1575 volcano names (1536 Holocene and 39 Pleistocene with thermal activity) (bolded), 1980 synonyms, and 9097 subfeatures, for an overall total of 12652 names, sorted below in alphabetical order. Descriptions of the various "Volcano Type" and "Volcano Status" designations can be found on the Volcano Data Criteria page.
| Volcano Name | Volcano Type | Volcano Status | Volcanic Subregion |
| AABIDA | Synonym of ADWA | Africa (northeastern) & Red Sea | |
| AB E GARM | Thermal Feature of DAMAVAND | Iran & Afghanistan | |
| ABANG, GUNUNG | Stratovolcano of BATUR | Lesser Sunda Islands | |
| ABARO | Cone of CORBETTI CALDERA | Africa (northeastern) & Red Sea | |
| ABAS TEPE | Cone of ERCIYES DAGI | Turkey | |
| ABBOTT PEAK | Cone of EREBUS | Antarctica & South Sandwich Islands | |
| ABEJERA, MONTANA | Dome of TENERIFE | Canary Islands | |
| ABEQUE, MONTANA DE | Cinder cone of TENERIFE | Canary Islands | |
| ABIDA | Synonym of ADWA | Africa (northeastern) & Red Sea | |
| ABILI AGITUK [WARGESS] | Tuff cone of BARRIER, THE | Africa (eastern) | |
| ABINGDON | Synonym of PINTA | Galápagos Islands | |
| ABOA | Synonym of AOBA | Vanuatu | |
| ABOUR, JEBEL EL | Cone of BAYUDA VOLCANIC FIELD | Africa (northern) | |
| ABRA, CERRO EL | Synonym of ATLIXCOS, LOS | México | |
| ABRIGO, CERRO DEL | Dome of VALLES CALDERA | USA (New Mexico) | |
| ABRUNCO | Dome of TENERIFE | Canary Islands | |
| ABU | Shield volcanoes | Holocene | Honshu |
| ABU AIL ISLAND | Cone of ZUKUR | Africa (northeastern) & Red Sea | |
| ABU HARIS, JABAL | Dome of KISHB, HARRAT | Arabia | |
| ABYAD, JABAL | Dome of KHAYBAR, HARRAT | Arabia | |
| ACADEMII NAUK | Synonym of AKADEMIA NAUK | Kamchatka Peninsula | |
| ACAMARACHI | Stratovolcano | Holocene | Northern Chile, Bolivia & Argentina |
| ACATENANGO | Stratovolcano | Historical | Guatemala |
| ACATLAN, CERRO | Cinder cone of NAOLINCO VOLCANIC FIELD | México | |
| ACCADEMIA | Dome of CAMPI FLEGREI | Italy | |
| ACHACARA, LOMA | Cinder cone of ANDAHUA-ORCOPAMPA | Perú | |
| ACHELONE | Vent of NISYROS | Greece | |
| ACHEOLUS | Vent of NISYROS | Greece | |
| ACHI-YAMA | Dome of NII-JIMA | Izu, Volcano, & Mariana Islands | |
| ACHIN-NIELLU | Cone of HUANQUIHUE GROUP | Central Chile & Argentina | |
| ACHIN-NIELLU | Cone of HUANQUIHUE GROUP | Central Chile & Argentina | |
| ACHIOTILLAL | Stratovolcano of BARVA | Costa Rica | |
| ACHLAN | Synonym of ICHINSKY | Kamchatka Peninsula | |
| ACIGOL | Crater of KARAPINAR FIELD | Turkey | |
| ACIGOL-NEVSEHIR | Caldera | Anthropology | Turkey |
| ACIGOL-NEYSEHIR | Synonym of ACIGOL-NEVSEHIR | Turkey | |
| ACOUMA, MORNE | Dome of PLAT PAYS, MORNE | West Indies | |
| ACQUARIUM | Thermal Feature of EAST DIAMANTE | Izu, Volcano, & Mariana Islands | |
| ACQUE CALDE | Thermal Feature of VULCANO | Italy | |
| ACROPOLI | Cone of PANTELLERIA | Italy | |
| ACTIVE CRATER | Crater of RINCON DE LA VIEJA | Costa Rica | |
| ADAGDAK | Stratovolcano | Pleistocene-Hot Springs | Aleutian Islands |
| ADAMS | Stratovolcano | Tephrochronology | USA (Washington) |
| ADAMS SEAMOUNT | Submarine volcano | Potassium-Argon | Pacific Ocean (central) |
| ADAS TEPE [ABAS TEPE] | Cone of ERCIYES DAGI | Turkey | |
| ADATARA | Stratovolcanoes | Historical | Honshu |
| ADATARA-YAMA | Dome of ADATARA | Honshu | |
| ADHAMAS | Thermal Feature of MILOS | Greece | |
| ADIKA-WILIS | Synonym of WILIS | Java | |
| ADO ALE | Synonym of ASSAB VOLCANIC FIELD | Africa (northeastern) & Red Sea | |
| ADO WADJUNG [ADO WAJUNG] | Crater of ILIWERUNG | Lesser Sunda Islands | |
| ADO WAJUNG | Crater of ILIWERUNG | Lesser Sunda Islands | |
| ADWA | Stratovolcano | Holocene | Africa (northeastern) & Red Sea |
| AEK MADURANA | Thermal Feature of SIBUALBUALI | Sumatra | |
| AEK WALIRAN | Thermal Feature of SIBUALBUALI | Sumatra | |
| AER PANAS | Thermal Feature of KEMBAR | Sumatra | |
| AESEPUT | Cone of SOPUTAN | Sulawesi | |
| AESEPUT WERO | Dome of SOPUTAN | Sulawesi | |
| AETNA | Synonym of ETNA | Italy | |
| AFANA | Crater of WALLIS ISLANDS | Samoan & Wallis Islands | |
| AFATE, CERRO | Dome of COATEPEQUE CALDERA | El Salvador & Honduras | |
| AFDERA | Stratovolcano | Holocene? | Africa (northeastern) & Red Sea |
| AFLITOS | Cone of PICOS VOLCANIC SYSTEM | Azores | |
| AFOLAU | Cone of UPOLU | Samoan & Wallis Islands | |
| AFONO | Dome of TUTUILA | Samoan & Wallis Islands | |
| AFOSA, MONTANA DE | Cinder cone of HIERRO | Canary Islands | |
| AFRERA | Synonym of AFDERA | Africa (northeastern) & Red Sea | |
| AFUTINA | Cone of SAVAI'I | Samoan & Wallis Islands | |
| AGAJEDAN | Synonym of SHISHALDIN | Aleutian Islands | |
| AGASCHAGOCH | Synonym of BOGOSLOF | Aleutian Islands | |
| AGELU | Synonym of AYELU | Africa (northeastern) & Red Sea | |
| AGHIE [PECHAN] | Cone of TIANSHAN VOLCANIC GROUP | China (western) | |
| AGINCOURT | Synonym of PENGCHIAHSU | Taiwan | |
| AGIOS JOANNIS | Vent of NISYROS | Greece | |
| AGMAGAN-KARADAG | Synonym of GHEGAM RIDGE | Caucasus, Georgia & Armenia | |
| AGNANO | Caldera of CAMPI FLEGREI | Italy | |
| AGNANO MONTE SPINA | Crater of CAMPI FLEGREI | Italy | |
| AGOENG | Synonym of AGUNG | Lesser Sunda Islands | |
| AGONIA, PUIG S' | Cone of OLOT VOLCANIC FIELD | Western Europe | |
| AGOTU VALLEY | Cone of CRATER MOUNTAIN | New Guinea & D'Entrecasteaux Islands | |
| AGRI DAGI | Synonym of ARARAT | Turkey | |
| AGRIGAN | Stratovolcano | Historical | Izu, Volcano, & Mariana Islands |
| AGRIHAN | Synonym of AGRIGAN | Izu, Volcano, & Mariana Islands | |
| AGRIO, DEL [CAVIAHUE] | Caldera of COPAHUE | Central Chile & Argentina | |
| AGRITAS, VOLCAN LAS | Dome of MASCOTA VOLCANIC FIELD | México | |
| AGUA | Stratovolcano | Holocene | Guatemala |
| AGUA AGRIA | Thermal Feature of AGUAJITO, EL | México | |
| AGUA AGRIA, AUSOLES DE | Thermal Feature of SAN VICENTE | El Salvador & Honduras | |
| AGUA AMARGA, CERRO | Dome of PURICO COMPLEX | Northern Chile, Bolivia & Argentina | |
| AGUA BENDITA, CERRO | Cone of ZITACUARO-VALLE DE BRAVO | México | |
| AGUA CALIENTE | Thermal Feature of CHICHON, EL | México | |
| AGUA CALIENTE DEL TUZGLE | Thermal Feature of TUZGLE, CERRO | Northern Chile, Bolivia & Argentina | |
| AGUA CALIENTE HOT SPRINGS | Thermal Feature of ST. HELENS | USA (Washington) | |
| AGUA DE PAU | Stratovolcano | Historical | Azores |
| AGUA FRIA, LAGUNA DE | Synonym of POAS | Costa Rica | |
| AGUA GRANDE, CERRO | Cinder cone of COMONDU-LA PURISIMA | México | |
| AGUA SHUCA | Thermal Feature of APANECA RANGE | El Salvador & Honduras | |
| AGUA, CERRO | Pyroclastic Cone of NEGRA, SIERRA | Galápagos Islands | |
| AGUA, CERRO DEL | Cinder cone of CHICHINAUTZIN | México | |
| AGUA, LAGUNA DE | Crater of SAN CRISTOBAL | Nicaragua | |
| AGUAJITO, EL | Caldera | Pleistocene-Hot Springs | México |
| AGUALVA | Dome of TERCEIRA | Azores | |
| AGUAS AMARGAS | Thermal Feature of SANTO TOMAS | Guatemala | |
| AGUAS CALIENTES | Stratovolcano of LASCAR | Northern Chile, Bolivia & Argentina | |
| AGUAS PERDIDAS | Synonym of NEGRILLAR, LA | Northern Chile, Bolivia & Argentina | |
| AGUAS TERMALES | Thermal Feature of RINCON DE LA VIEJA | Costa Rica | |
| AGUAS ZARCAS | Cinder cone of PLATANAR | Costa Rica | |
| AGUERO, CERRO DE | Cone of TELICA | Nicaragua | |
| AGUILA, CERRO EL | Stratovolcano of APANECA RANGE | El Salvador & Honduras | |
| AGUILA, CERRO LA | Stratovolcano of MICHOACAN-GUANAJUATO | México | |
| AGUILA, EL [SAN ANTONIO] | Stratovolcano of TACANA | México | |
| AGUILA, PICO DEL | Dome of TOLUCA, NEVADO DE | México | |
| AGUILAS, LAS | Dome of HUMEROS, LOS | México | |
| AGUILAS, VOLCAN LAS | Cone of CHILLAN, NEVADOS DE | Central Chile & Argentina | |
| AGUILERA | Stratovolcano | Radiocarbon | Southern Chile & Argentina |
| AGUILILLAS, CERRO | Cinder cone of COMONDU-LA PURISIMA | México | |
| AGUNG | Crater of GUNTUR | Java | |
| AGUNG | Stratovolcano | Historical | Lesser Sunda Islands |
| AGUROSHI-YAMA | Cone of KURIKOMA | Honshu | |
| AHALAPAM CINDER FIELD | Synonym of NORTH SISTER FIELD | USA (Oregon) | |
| AHDING INGRID MOUNTAIN | Cone of NUNIVAK ISLAND | Alaska (western) | |
| AHKIWIKSNUK | Maar of NUNIVAK ISLAND | Alaska (western) | |
| AHOLO, VOLCAN | Cone of CHICHINAUTZIN | México | |
| AHRUP | Synonym of LONG ISLAND | Northeast of New Guinea | |
| AHUACATLAN, VOLCAN DE | Synonym of CEBORUCO | México | |
| AHUACHAPAN | Synonym of APANECA RANGE | El Salvador & Honduras | |
| AHUATEPEC, CERRO | Cone of SERDAN-ORIENTAL | México | |
| AHUAZATEPETL, VOLCAN | Cinder cone of CHICHINAUTZIN | México | |
| AHUMOA | Cone of MAUNA KEA | Hawaiian Islands | |
| AHYI | Submarine volcano | Seismicity | Izu, Volcano, & Mariana Islands |
| AI-LAAU | Shield volcano of KILAUEA | Hawaiian Islands | |
| AIELU | Synonym of AYELU | Africa (northeastern) & Red Sea | |
| AIGAGIN | Synonym of MAKUSHIN | Aleutian Islands | |
| AIGUANEGRA, VOLCA | Cone of OLOT VOLCANIC FIELD | Western Europe | |
| AIGUILLE NOIRE | Cone of KERGUELEN ISLANDS | Indian Ocean (southern) | |
| AILERON | Dome of PELEE | West Indies | |
| AINO-MINE | Cone of KUSATSU-SHIRANE | Honshu | |
| AINU TUKAP [TUKAP] | Stratovolcano of MEDVEZHIA | Kuril Islands | |
| AIRA | Pleistocene caldera of SAKURA-JIMA | Ryukyu Islands & Kyushu | |
| AIRE, CERRO DEL | Cinder cone of MICHOACAN-GUANAJUATO | México | |
| AISEPOET [AESEPUT] | Cone of SOPUTAN | Sulawesi | |
| AIYANSH VOLCANO | Synonym of TSEAX RIVER CONE | Canada | |
| AIZU-FUJI (AIZU-YAMA) | Synonym of BANDAI | Honshu | |
| AJAGIN (AJAGISCH) | Synonym of MAKUSHIN | Aleutian Islands | |
| AJAKAN [AYAKAN] | Crater of GUNTUR | Java | |
| AJATA, VOLCANES DE | Cinder cone of PARINACOTA | Northern Chile, Bolivia & Argentina | |
| AJEK-AJEK | Caldera of SEMERU | Java | |
| AJEL | Synonym of AYELU | Africa (northeastern) & Red Sea | |
| AJELOU | Synonym of AYELU | Africa (northeastern) & Red Sea | |
| AJER PANAS [AYER PANAS] | Thermal Feature of LUMUT BALAI, BUKIT | Sumatra | |
| AJUSCO, VOLCAN | Dome of CHICHINAUTZIN | México | |
| AKA-DAKE | Stratovolcano of DAISETSU | Hokkaido | |
| AKA-DAKE | Synonym of SINARKA | Kuril Islands | |
| AKA-JIMA | Cone of FUKUE-JIMA | Ryukyu Islands & Kyushu | |
| AKADEMIA NAUK | Stratovolcanoes | Historical | Kamchatka Peninsula |
| AKADEMIA NAUK | Fissure vent of KLIUCHEVSKOI | Kamchatka Peninsula | |
| AKADEMIA NAUK SPRINGS | Thermal Feature of AKADEMIA NAUK | Kamchatka Peninsula | |
| AKAGI | Stratovolcano | Holocene? | Honshu |
| AKAHANI-YAMA | Stratovolcano of BANDAI | Honshu | |
| AKAI | Cinder cone of ASO | Ryukyu Islands & Kyushu | |
| AKAKUBO | Cone of IZU-TOBU | Honshu | |
| AKAKURA | Thermal Feature of MYOKO | Honshu | |
| AKAKURA-DAKE | Cone of HAKKODA GROUP | Honshu | |
| AKAMIZU | Thermal Feature of ASO | Ryukyu Islands & Kyushu | |
| AKAN | Caldera | Historical | Hokkaido |
| AKAN-FUJI | Stratovolcano of AKAN | Hokkaido | |
| AKAN-HUZI [AKAN-FUJI] | Stratovolcano of AKAN | Hokkaido | |
| AKAN-KOHAN | Thermal Feature of AKAN | Hokkaido | |
| AKANAGURE | Dome of HIUCHI | Honshu | |
| AKASAKA-MINAMI | Cone of IZU-TOBU | Honshu | |
| AKATSUKA | Cone of FUJI | Honshu | |
| AKAZAKI-NO-MINE | Dome of NII-JIMA | Izu, Volcano, & Mariana Islands | |
| AKAZAWA-KAIKYU | Submarine vent of IZU-TOBU | Honshu | |
| AKERLUNDH | Cone of SEAL NUNATAKS GROUP | Antarctica & South Sandwich Islands | |
| AKHAT | Cone of DARIGANGA VOLCANIC FIELD | Mongolia | |
| AKHLAN | Synonym of ICHINSKY | Kamchatka Peninsula | |
| AKHOMTEN | Cone of MUTNOVSKY | Kamchatka Peninsula | |
| AKHTANG | Shield volcano | Holocene? | Kamchatka Peninsula |
| AKHUACHAPAN [PLAYON DE AHUACHAPAN] | Thermal Feature of APANECA RANGE | El Salvador & Honduras | |
| AKI [MENSHOI BRAT] | Dome of MEDVEZHIA | Kuril Islands | |
| AKILOSET SPRINGS | Thermal Feature of SILALI | Africa (eastern) | |
| AKIMOANA | Submarine vent of MAUNA LOA | Hawaiian Islands | |
| AKITA-FUJI | Synonym of CHOKAI | Honshu | |
| AKITA-KOMAGA-TAKE | Stratovolcanoes | Historical | Honshu |
| AKITA-YAKE-YAMA | Stratovolcano | Historical | Honshu |
| AKKKTIVNAYA VORONKA | Crater of MUTNOVSKY | Kamchatka Peninsula | |
| AKMOAN | Thermal Feature of MATUTUM | Mindanao | |
| AKOMA, TAVANI | Cone of KUWAE | Vanuatu | |
| AKU | Cone of UDOKAN PLATEAU | Russia (southeastern) | |
| AKUSEKI-JIMA | Stratovolcanoes | Holocene? | Ryukyu Islands & Kyushu |
| AKUTAN | Stratovolcano | Historical | Aleutian Islands |
| AL WAHBAH | Maar of KISHB, HARRAT | Arabia | |
| AL-ARAB, DJEBEL | Synonym of DRUZE, JABAL AD | Syria | |
| AL-DJABAL AL-ASWAD | Synonym of SAWAD, HARRA ES- | Arabia | |
| AL-HARUJ AL ASWAD | Synonym of HARUJ | Africa (northern) | |
| AL-KHURDJ BAL DJILD [KHURDJ EL-AISAR] | Tuff cone of HAYLAN, JABAL | Arabia | |
| ALA DAG | Cone of KARS PLATEAU | Turkey | |
| ALAE | Former pit crater of KILAUEA | Hawaiian Islands | |
| ALAEMBAKEO, VUTI | Cone of AOBA | Vanuatu | |
| ALAGEY | Synonym of ARAGATS | Caucasus, Georgia & Armenia | |
| ALAGOGSHAK | Stratovolcano of MARTIN | Alaska Peninsula | |
| ALAID | Stratovolcano | Historical | Kuril Islands |
| ALAID | Cinder cone of TOLBACHIK | Kamchatka Peninsula | |
| ALAMAGAN | Stratovolcano | Radiocarbon | Izu, Volcano, & Mariana Islands |
| ALANG | Stratovolcano of DIENG VOLCANIC COMPLEX | Java | |
| ALAPARS | Dome of GHEGAM RIDGE | Caucasus, Georgia & Armenia | |
| ALAUAWA, PUU | Cone of HUALALAI | Hawaiian Islands | |
| ALAYTA | Shield volcano | Historical | Africa (northeastern) & Red Sea |
| ALBAINS, MONTS | Synonym of ALBAN HILLS | Italy | |
| ALBAN HILLS | Caldera | Holocene? | Italy |
| ALBAN HILLS | Caldera | Holocene? | Italy |
| ALBANO | Maar of ALBAN HILLS | Italy | |
| ALBANO, MONTE | Cinder cone of ETNA | Italy | |
| ALBANY ISLAND | Cone of SANTIAGO | Galápagos Islands | |
| ALBATROSS POINT | Tuff cone of ANTIPODES ISLAND | Pacific Ocean (southern) | |
| ALBAY VOLCANO | Synonym of MAYON | Luzon | |
| ALBERCA, CERRO DE LA | Cinder cone of MICHOACAN-GUANAJUATO | México | |
| ALBERCA, LA | Maar of MICHOACAN-GUANAJUATO | México | |
| ALBERT PARK | Cone of AUCKLAND FIELD | New Zealand | |
| ALBERT, MT. | Cone of AUCKLAND FIELD | New Zealand | |
| ALBINE-BOLDOK | Cone of AZAS PLATEAU | Russia (southeastern) | |
| ALBIT HUT | Synonym of BIR BORHUT | Arabia | |
| ALBULHEK | Cone of MATUTUM | Mindanao | |
| ALCEDO | Shield volcano | Historical | Galápagos Islands |
| ALCHICHICA | Tuff ring of SERDAN-ORIENTAL | México | |
| ALE BAGU | Stratovolcano | Holocene | Africa (northeastern) & Red Sea |
| ALEBBAGU | Synonym of ALE BAGU | Africa (northeastern) & Red Sea | |
| ALEGRIA, AUSOLES DE LA LAGUNA DE | Thermal Feature of TECAPA | El Salvador & Honduras | |
| ALEGRIA, CERRO | Cone of TECAPA | El Salvador & Honduras | |
| ALESSI, DJEBEL [JABAL EL-ESI] | Stratovolcano of DHAMAR, HARRAS OF | Arabia | |
| ALEXANDER, MT. | Dome of ST. CATHERINE | West Indies | |
| ALEXANDROS | Vent of NISYROS | Greece | |
| ALEYONE | Cone of PLEIADES, THE | Antarctica & South Sandwich Islands | |
| ALFERES, CALDEIRA DO | Cone of SETE CIDADES | Azores | |
| ALFERES, CALDEIRA DO | Cone of SETE CIDADES | Azores | |
| ALFRED PICARD, CRATERE | Crater of FOURNAISE, PITON DE LA | Indian Ocean (western) | |
| ALFTAKVISLARHRAUN | Fissure vent of KATLA | Iceland (southern) | |
| ALFTARHOLL | Crater of GRIMSNES | Iceland (southwestern) | |
| ALI BOGO | Synonym of ERTA ALE | Africa (northeastern) & Red Sea | |
| ALI DAG | Dome of ERCIYES DAGI | Turkey | |
| ALIANNGEI | Synonym of ICHINSKY | Kamchatka Peninsula | |
| ALIANTE | Synonym of LLAIMA | Central Chile & Argentina | |
| ALID | Stratovolcano | Holocene | Africa (northeastern) & Red Sea |
| ALIT | Synonym of ALID | Africa (northeastern) & Red Sea | |
| ALITAR | Maar of PURICO COMPLEX | Northern Chile, Bolivia & Argentina | |
| ALJANNGEJ | Synonym of ICHINSKY | Kamchatka Peninsula | |
| ALJOJUCA | Maar of SERDAN-ORIENTAL | México | |
| ALLIGATOR LAKE | Maar of SAN PABLO VOLCANIC FIELD | Luzon | |
| ALLIGATOR LAKE | Volcanic field | Holocene | Canada |
| ALMARCHIGA [VOLCAN DE FASNIA] | Cinder cone of TENERIFE | Canary Islands | |
| ALMASIGAHAN | Dome of LABO | Luzon | |
| ALMENNINGAHRAUN | Fissure vent of KATLA | Iceland (southern) | |
| ALMOLONGA | Stratovolcano | Historical | Guatemala |
| ALMOLONGA, BANOS | Thermal Feature of ALMOLONGA | Guatemala | |
| ALMONZA | Vent of PANTELLERIA | Italy | |
| ALNEI | Synonym of ICHINSKY | Kamchatka Peninsula | |
| ALNEI [ALNEY] | Stratovolcano of ALNEY-CHASHAKONDZHA | Kamchatka Peninsula | |
| ALNEY | Stratovolcano of ALNEY-CHASHAKONDZHA | Kamchatka Peninsula | |
| ALNEY-CHASHAKONDZHA | Stratovolcano | Radiocarbon | Kamchatka Peninsula |
| ALNGEI | Synonym of ALNGEY | Kamchatka Peninsula | |
| ALNGEY | Stratovolcano | Holocene? | Kamchatka Peninsula |
| ALOFAU | Pleistocene caldera of TUTUILA | Samoan & Wallis Islands | |
| ALOI | Former pit crater of KILAUEA | Hawaiian Islands | |
| ALON, MT. | Cone of GAMKONORA | Halmahera | |
| ALPEHUE | Crater of SOLLIPULLI | Central Chile & Argentina | |
| ALSEY | Cone of VESTMANNAEYJAR | Iceland (southern) | |
| ALTA GRACIA | Cinder cone of CONCEPCION | Nicaragua | |
| ALTA, MONTANA | Cone of GRAN CANARIA | Canary Islands | |
| ALTER VOSS | Cone of WEST EIFEL VOLCANIC FIELD | Western Europe | |
| ALTINETES, PICO | Dome of AGUA DE PAU | Azores | |
| ALTO | See proper name (e.g. SANTANO, ALTO LA) | Spanish for PEAK | |
| ALTO GRANDE, CERRO | Cone of IRAZU | Costa Rica | |
| ALTO, CERRO | Shield volcano of MICHOACAN-GUANAJUATO | México | |
| ALTO, CERRO | Dome of PRIMAVERA, SIERRA LA | México | |
| ALTO, CERRO | Cinder cone of CUILAPA-BARBARENA | Guatemala | |
| ALTO, CERRO | Cinder cone of COATEPEQUE CALDERA | El Salvador & Honduras | |
| ALTO, PICO | Stratovolcano of TERCEIRA | Azores | |
| ALU | Fissure vents | Holocene | Africa (northeastern) & Red Sea |
| ALUNALUN | Crater of PAPANDAYAN | Java | |
| ALUTU | Stratovolcano | Radiocarbon | Africa (northeastern) & Red Sea |
| ALVAREZ | Maar of MICHOACAN-GUANAJUATO | México | |
| AMACAN-GOPOD | Thermal Feature of LEONARD RANGE | Mindanao | |
| AMADO | Dome of BORAWLI | Africa (northeastern) & Red Sea | |
| AMAGASE | Thermal Feature of KUJU | Ryukyu Islands & Kyushu | |
| AMAGI | Stratovolcano of IZU-TOBU | Honshu | |
| AMAK | Stratovolcano | Historical | Aleutian Islands |
| 'AM'AM, JABAL | Dome of KHAYBAR, HARRAT | Arabia | |
| AMANI | Cone of NYAMURAGIRA | Africa (central) | |
| AMARCHTA | Synonym of AMUKTA | Aleutian Islands | |
| AMARGURA | Synonym of FONUALEI | Tonga Islands | |
| AMARILLA, MONTANA | Cone of LANZAROTE | Canary Islands | |
| AMARILLO, CERRO | Tuff cone of SAN FELIX | Pacific Ocean (Chilean Islands) | |
| AMARTI | Synonym of BORAWLI | Africa (northeastern) & Red Sea | |
| AMASING | Stratovolcanoes | Holocene | Halmahera |
| AMATEPEQUE [EL JABALI] | Stratovolcano of SAN SALVADOR | El Salvador & Honduras | |
| AMATITLAN | Pleistocene caldera of PACAYA | Guatemala | |
| AMATOFUA | Synonym of TOFUA | Tonga Islands | |
| AMAYA, AUSOLES DE | Thermal Feature of APANECA RANGE | El Salvador & Honduras | |
| AMAYO, VOLCAN | Synonym of FLORES | Guatemala | |
| AMAYTOLI | Synonym of ALE BAGU | Africa (northeastern) & Red Sea | |
| AMBAE | Synonym of AOBA | Vanuatu | |
| AMBALATUNGAN GROUP | Compound volcano | Fumarolic | Luzon |
| AMBANG | Complex volcano | Historical | Sulawesi |
| AMBATO [AMPATO] | Stratovolcano of SABANCAYA | Perú | |
| AMBITLE | Stratovolcano | Radiocarbon | New Ireland |
| AMBOELOMBO | Synonym of EBULOBO | Lesser Sunda Islands | |
| AMBOHIBE | Dome of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| AMBOHIMALALA | Cone of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| AMBOHITRITAINERINA | Cone of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| AMBOHITRONDRY | Cone of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| AMBRE-BOBAOMBY | Volcanic field | Holocene | Indian Ocean (western) |
| AMBRIM | Synonym of AMBRYM | Vanuatu | |
| AMBRYM | Pyroclastic shield | Historical | Vanuatu |
| AMBUREMBU (AMBUROMBU) | Synonym of EBULOBO | Lesser Sunda Islands | |
| AMEBA | Dome of MEDVEZHIA | Kuril Islands | |
| AMES RANGE | Synonym of ANDRUS | Antarctica & South Sandwich Islands | |
| AMGAI HIGHLANDS-HIGASHI | Vent of IZU-TOBU | Honshu | |
| AMIAK | Synonym of AMAK | Aleutian Islands | |
| AMIATA | Lava domes | Pleistocene-Fumarolic | Italy |
| AMIATA, MONTE | Dome of AMIATA | Italy | |
| AMIC | Crater of SOUFRIERE GUADELOUPE | West Indies | |
| AMIC, MORNE | Dome of SOUFRIERE GUADELOUPE | West Indies | |
| AMIKAKE SPA | Thermal Feature of IWATE | Honshu | |
| AMKA-USYR | Synonym of NEMO PEAK | Kuril Islands | |
| AMOISSA | Synonym of ADWA | Africa (northeastern) & Red Sea | |
| AMOLOC, VOLCAN | Cinder cone of CHICHINAUTZIN | México | |
| AMOR | Stratovolcano of SURETAMATAI | Vanuatu | |
| AMORONG | Lava domes | Fumarolic | Luzon |
| AMPARY | Dome of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| AMPATO | Stratovolcano of SABANCAYA | Perú | |
| AMSTERDAM ISLAND | Stratovolcano | Holocene | Indian Ocean (southern) |
| AMUCHTA | Synonym of AMUKTA | Aleutian Islands | |
| AMUD, JABAL AL | Cone of HARRAH, AL | Arabia | |
| AMUKTA | Stratovolcano | Historical | Aleutian Islands |
| AMUTYCHI | Cinder cone of UDOKAN PLATEAU | Russia (southeastern) | |
| ANAGI-YAMA [ANANO-YAMA] | Dome of KOZU-SHIMA | Izu, Volcano, & Mariana Islands | |
| ANAGONA | Cone of AOBA | Vanuatu | |
| ANAK KRAKATAU | Cone of KRAKATAU | Krakatau | |
| ANAK RANAKAH | Dome of RANAKAH | Lesser Sunda Islands | |
| ANAKENA, VOLCAN | Pyroclastic Cone of EASTER ISLAND | Pacific Ocean (Chilean Islands) | |
| ANAMARAMA, MAUNGA | Pyroclastic Cone of EASTER ISLAND | Pacific Ocean (Chilean Islands) | |
| ANANGUSIK | Synonym of GARELOI | Aleutian Islands | |
| ANANO-YAMA | Dome of IZU-TOBU | Honshu | |
| ANANO-YAMA | Dome of KOZU-SHIMA | Izu, Volcano, & Mariana Islands | |
| ANANOKUBO | Tuff ring of IZU-TOBU | Honshu | |
| ANAOTA | Cone of SAVAI'I | Samoan & Wallis Islands | |
| ANAS | Thermal Feature of BILIRAN | Central Philippines | |
| ANATAHAN | Stratovolcano | Historical | Izu, Volcano, & Mariana Islands |
| ANATOM | Synonym of ANEITYUM | Vanuatu | |
| ANAUN | Stratovolcano | Holocene? | Kamchatka Peninsula |
| ANCHAL, MAAR D' | Maar of CHAINE DES PUYS | Western Europe | |
| ANDAGUA VALLEY [ANDAHUA VALLEY] | Synonym of ANDAHUA-ORCOPAMPA | Perú | |
| ANDAHUA-ORCOPAMPA | Cinder cones | Radiocarbon | Perú |
| ANDES, CERRO LOS | Cone of CHACHANI, NEVADO | Perú | |
| ANDIKLI TEPE | Cone of KARAPINAR FIELD | Turkey | |
| ANDIKLI-AYIRTMEKE TEPE | Cone of KARAPINAR FIELD | Turkey | |
| ANDJASMORO | Stratovolcano of ARJUNO-WELIRANG | Java | |
| ANDRAIKIBA | Crater of ANKARATRA FIELD | Indian Ocean (western) | |
| ANDRANOJAVATRA | Cone of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| ANDRANORATSY | Crater of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| ANDRANOTORAHA | Crater of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| ANDREAS | Vent of NISYROS | Greece | |
| ANDRES | Stratovolcano of PALOMO | Central Chile & Argentina | |
| ANDREW BAY | Caldera of ADAGDAK | Aleutian Islands | |
| ANDREW BAY HOT SPRINGS | Thermal Feature of ADAGDAK | Aleutian Islands | |
| ANDREW'S CONE | Stratovolcano of BARRIER, THE | Africa (eastern) | |
| ANDROMEDA CONE | Cone of IMURUK LAKE | Alaska (western) | |
| ANDRUS | Shield volcanoes | Holocene? | Antarctica & South Sandwich Islands |
| ANEITYUM | Stratovolcanoes | Holocene? | Vanuatu |
| ANETCHOM | Synonym of ANEITYUM | Vanuatu | |
| ANGALAFIB | Cone of BAYUDA VOLCANIC FIELD | Africa (northern) | |
| ANGAR, GOF | Maar of MARSABIT | Africa (eastern) | |
| ANGAVO | Dome of ITASY VOLCANIC FIELD | Indian Ocean (western) | |
| ANGET | Crater of LUMUT BALAI, BUKIT | Sumatra | |
| ANGILA | Cone of LANGILA | New Britain | |
| ANGLAIS, MORNE | Stratovolcano of WATT, MORNE | West Indies | |
| ANGNJIOMAN [ANGNYIOMAN] | Thermal Feature of ILIMUDA | Lesser Sunda Islands | |
| ANGNYIOMAN | Thermal Feature of ILIMUDA | Lesser Sunda Islands | |
| ANGOES, BATOE [BATU ANGUS] | Dome of TONGKOKO | Sulawesi | |
| ANGOSTURA, LA | Tuff ring of HUANQUIHUE GROUP | Central Chile & Argentina | |
| ANGOSTURA, MONTANA DE LA | Cinder cone of TENERIFE | Canary Islands | |
| ANGUREAL | Stratovolcano of CAYAMBE | Ecuador | |
| ANGUS BARU, BATU | Dome of TONGKOKO | Sulawesi | |
| ANGUS, BATU | Crater of BANDA API | Banda Sea | |
| ANGUS, BATU | Dome of TONGKOKO | Sulawesi | |
| ANIAKCHAK | Caldera | Historical | Alaska Peninsula |
| ANILLO, CERRO DEL | Cinder cone of MICHOACAN-GUANAJUATO | México | |
| ANIMAS, CERRO DE LAS | Cone of AZUL, CERRO | Galápagos Islands | |
| ANIR | Synonym of AMBITLE | New Ireland | |
| ANJAR, GUNUNG | Cone of IJEN | Java | |
| ANJAR, KAWAH | Thermal Feature of KAMOJANG, KAWAH | Java | |
| ANKAIZINA FIELD | Cinder cones | Holocene | Indian Ocean (western) |
| ANKARATRA FIELD | Cinder cones | Holocene | Indian Ocean (western) |
| ANNEXATION | Shield volcano of MACAULEY ISLAND | Kermadec Islands | |
| ANOENGOLA [ANUNGGOLA] | Crater of SIRUNG | Lesser Sunda Islands | |
| ANONIMO | Synonym of LLAIMA | Central Chile & Argentina | |
| ANSEI | Crater of KOMAGA-TAKE | Hokkaido | |
| ANTEOJOS, LOS | Dome of COATEPEQUE CALDERA | El Salvador & Honduras | |
| ANTI, GUNUNG | Cone of BATUR | Lesser Sunda Islands | |
| ANTICURA | Cone of ANTILLANCA GROUP | Central Chile & Argentina | |
| ANTICURA | Pyroclastic Cone of PUYEHUE-CORDON CAULLE | Central Chile & Argentina | |
| ANTILLANCA GROUP | Stratovolcanoes | Radiocarbon | Central Chile & Argentina |
| ANTIMILOS | Cone of MILOS | Greece | |
| ANTIPODES ISLAND | Pyroclastic cones | Holocene? | Pacific Ocean (southern) |
| ANTISANA | Stratovolcano | Historical | Ecuador |
| ANTITRUZ, CERRO | Cinder cone of CRATER BASALT VOLCANIC FIELD | Southern Chile & Argentina | |
| ANTIZANA | Synonym of ANTISANA | Ecuador | |
| ANTOCO | Synonym of ANTUCO | Central Chile & Argentina | |
| ANTOFAGASTA DE LA SIERRA | Scoria cones | Holocene | Northern Chile, Bolivia & Argentina |
| ANTOINE, LAKE | Crater of ST. CATHERINE | West Indies | |
| ANTOJO | Synonym of ANTUCO | Central Chile & Argentina | |
| ANTONELLI | Cone of AMSTERDAM ISLAND | Indian Ocean (southern) | |
| ANTONIA PEAK | Synonym of TIATIA | Kuril Islands | |
| ANTSIFEROVA | Synonym of SHIRINKI | Kuril Islands | |
| ANTSIRABE | Cone of ANKARATRA FIELD | Indian Ocean (western) | |
| ANTSIRABLE | Synonym of ANKARATRA FIELD | Indian Ocean (western) | |
| ANTUCO | Stratovolcano | Historical | Central Chile & Argentina |
| ANUNGGOLA | Crater of SIRUNG | Lesser Sunda Islands | |
| ANVIL PEAK | Cone of SEMISOPOCHNOI | Aleutian Islands | |
| ANVIL, THE [EL YUNQUE] | Stratovolcano of ROBINSON CRUSOE | Pacific Ocean (Chilean Islands) | |
| AOBA | Shield volcano | Historical | Vanuatu |
| AOBUNA | Stratovolcano of TOWADA | Honshu | |
| A'OFA | Shield volcano of OFU-OLOSEGA | Samoan & Wallis Islands | |
| AOGA-SHIMA | Stratovolcano | Historical | Izu, Volcano, & Mariana Islands |
| AONE SPA | Thermal Feature of ZAO | Honshu | |
| AOPO [MAUGA MU] | Cinder cone of SAVAI'I | Samoan & Wallis Islands | |
| AP-SAN | Shield volcano of CH'UGA-RYONG | Korea | |
| APACAGUA | Synonym of PACAYA | Guatemala | |
| APACHETA, CERRO | Dome of AZUFRE, CERRO DEL | Northern Chile, Bolivia & Argentina | |
| APACHINSKAIA SOPKA | Synonym of OPALA | Kamchatka Peninsula | |
| APAGADO | Pyroclastic cone | Holocene | Southern Chile & Argentina |
| APAGADO, EL [ESCALANTE] | Stratovolcano of SAIRECABUR | Northern Chile, Bolivia & Argentina | |
| APAKHONCHICH | Fissure vent of KLIUCHEVSKOI | Kamchatka Peninsula | |
| APALE [CERRO AFATE] | Dome of COATEPEQUE CALDERA | El Salvador & Honduras | |
| APALONG | Crater of UMBOI | Northeast of New Guinea | |
| APALSKAIA SOPKA | Synonym of OPALA | Kamchatka Peninsula | |
| APANECA RANGE | Stratovolcanoes | Holocene | El Salvador & Honduras |
| APANECA, CERRO DE | Stratovolcano of APANECA RANGE | El Salvador & Honduras | |
| APANTES, CERRO DE | Cinder cone of SANTIAGO, CERRO | Guatemala | |
| APASTEPE, CERRO | Cinder cone of SAN CRISTOBAL | Nicaragua | |
| APASTEPEQUE FIELD | Volcanic field | Holocene | El Salvador & Honduras |
| APASTEPEQUE, CERRO DE | Dome of APASTEPEQUE FIELD | El Salvador & Honduras | |
| APASTEPEQUE, LAGUNA | Pit crater of APASTEPEQUE FIELD | El Salvador & Honduras | |
| APAXTEPEC | Cinder cone of COLIMA | México | |
| API | Synonym of GUNUNGAPI WETAR | Banda Sea | |
| API SIAU | Synonym of KARANGETANG [API SIAU] | Sangihe Islands | |
| APO | Stratovolcano | Fumarolic | Mindanao |
| APO SPRING | Thermal Feature of APO | Mindanao | |
| APOLIMA | Tuff cone of UPOLU | Samoan & Wallis Islands | |
| APOYEQUE | Pyroclastic shield | Radiocarbon | Nicaragua |
| APOYO | Cone of HOMA MOUNTAIN | Africa (eastern) | |
| APSIAN | Cone of NATIB | Luzon | |
| APUAHOE [ROLLES PEAK] | Stratovolcano of MAROA | New Zealand | |
| ARA-KHANGAY VOLC FIELD | Synonym of TARYATU-CHULUTU | Mongolia | |
| ARA-YAMA | Cone of IZU-TOBU | Honshu | |
| ARA-YAMA | Synonym of NIKKO-SHIRANE | Honshu | |
| ARACAR | Stratovolcano | Uncertain | Northern Chile, Bolivia & Argentina |
| ARADAS, CERRO LAS | Cinder cone of SANTIAGO, CERRO | Guatemala | |
| ARAFO, VOLCAN DE [VOLCAN DE GUIMAR] | Cinder cone of TENERIFE | Canary Islands | |
| ARAGATS | Stratovolcano | Holocene | Caucasus, Georgia & Armenia |
| ARAGATZ | Synonym of ARAGATS | Caucasus, Georgia & Armenia | |
| ARAGAY | Synonym of ARAGATS | Caucasus, Georgia & Armenia | |
| ARAISA | Synonym of ATSONUPURI | Kuril Islands | |
| ARAITO | Synonym of ALAID | Kuril Islands | |
| ARAITO-FUJI | Synonym of ALAID | Kuril Islands | |
| ARAMUACA, LAGUNA | Maar | Holocene | El Salvador & Honduras |
| ARANGUADI | Tuff ring of BISHOFTU VOLCANIC FIELD | Africa (northeastern) & Red Sea | |
| ARARAT | Stratovolcano | Historical | Turkey |
| ARAUMAKUTAN | Synonym of KHARIMKOTAN | Kuril Islands | |
| ARAYAT | Stratovolcano | Holocene? | Luzon |
| ARAYU HOT SPRING | Thermal Feature of TAKAHARA | Honshu | |
| ARBRE | Cone of KARISIMBI | Africa (central) | |
| ARCHIAVERNO | Tuff cone of CAMPI FLEGREI | Italy | |
| ARCTOWSKY | Cone of SEAL NUNATAKS GROUP | Antarctica & South Sandwich Islands | |
| ARCTURUS LAKE | Crater of GENOVESA | Galápagos Islands | |
| ARDJOENO [ARJUNO] | Stratovolcano of ARJUNO-WELIRANG | Java | |
| ARDOUKOBA | Fissure vents | Historical | Africa (northeastern) & Red Sea |
| ARDSCHICH DAGH | Synonym of ERCIYES DAGI | Turkey | |
| AREIA, PICO DA | Dome of FURNAS | Azores | |
| AREKIKAPAKAPA | Thermal Feature of ROTORUA | New Zealand | |
| ARENA, MONTANA DE LA | Cone of FUERTEVENTURA | Canary Islands | |
| ARENAL | Stratovolcano | Historical | Costa Rica |
| ARENAL | Dome of ATACAZO | Ecuador | |
| ARENAL, CERRO | Cinder cone of MASAYA | Nicaragua | |
| ARENAL, VOLCAN | Tuff ring of LANIN | Central Chile & Argentina | |
| ARENALES | Stratovolcano | Historical | Southern Chile & Argentina |
| ARENAS | Cone of HUMEROS, LOS | México | |
| ARENAS | Crater of RUIZ, NEVADO DEL | Colombia | |
| ARENAS, MONTANA DE LAS [VOLCAN DE GUIMAR] | Cinder cone of TENERIFE | Canary Islands | |
| AREQUIPA, VOLCAN DE | Synonym of MISTI, EL | Perú | |
| 'ARES, DJEBEL EL- [JABAL 'URAIS] | Cone of SAWAD, HARRA ES- | Arabia | |
| ARFAT | Synonym of GAMALAMA | Halmahera | |
| ARGAEUS MONS (ARGAIOS) | Synonym of ERCIYES DAGI | Turkey | |
| ARGAPURA | Stratovolcano of IYANG-ARGAPURA | Java | |
| ARGELIA, CERRO DE | Cone of FLORES | Guatemala | |
| ARGOPEORO [ARGAPURA] | Stratovolcano of IYANG-ARGAPURA | Java | |
| ARHAB, HARRA OF | Volcanic field | Historical | Arabia |
| ARICCIA | Maar of ALBAN HILLS | Italy | |
| ARIS ISLAND | Synonym of BOISA | Northeast of New Guinea | |
| ARJUNO-WELIRANG | Stratovolcano | Historical | Java |
| ARKATHIO | Dome of MILOS | Greece | |
| ARMADILLO PEAK | Stratovolcano of EDZIZA | Canada | |
| ARMADO, EL | Cone of TURRIALBA | Costa Rica | |
| ARMADO, ISLA EL | Tuff ring of ZAPATERA | Nicaragua | |
| ARMAGAN | Cone of GHEGAM RIDGE | Caucasus, Georgia & Armenia | |
| ARMARELO, MONTE | Cone of FOGO | Cape Verde Islands | |
| ARNARDALSOLDUGJOSKA YNGRI | Crater Row of KVERKFJOLL | Iceland (northeastern) | |
| ARNARSETUR | Crater Row of REYKJANES | Iceland (southwestern) | |
| AROOMA | Crater of DUBBI | Africa (northeastern) & Red Sea | |
| AROP | Synonym of LONG ISLAND | Northeast of New Guinea | |
| ARPONG | Cone of ULREUNG | Korea | |
| ARRABALES, CALDERA DE LOS | Cinder cone of FUERTEVENTURA | Canary Islands | |
| ARRAU, VOLCAN | Dome of CHILLAN, NEVADOS DE | Central Chile & Argentina | |
| ARRAYANES | Cone of ANTILLANCA GROUP | Central Chile & Argentina | |
| ARROYO COLORADO | Dome of PRIMAVERA, SIERRA LA | México | |
| ARROYO IXTAHUATONTE | Dome of PRIMAVERA, SIERRA LA | México | |
| ARROYO LA CUARTILLA | Dome of PRIMAVERA, SIERRA LA | México | |
| ARROYO LAS ANIMAS | Dome of PRIMAVERA, SIERRA LA | México | |
| ARROYO LOS PILAS | Dome of PRIMAVERA, SIERRA LA | México | |
| ARROYO SAN JOSE | Synonym of JARAGUAY VOLCANIC FIELD | México | |
| ARROYO SAUCILLO | Vent of PRIMAVERA, SIERRA LA | México | |
| ARSO | Cone of ISCHIA | Italy | |
| ARSO, MONTE | Cinder cone of ETNA | Italy | |
| ARTALI | Synonym of ERTA ALE | Africa (northeastern) & Red Sea | |
| ARTEMISIO | Synonym of ALBAN HILLS | Italy | |
| ARTEMISIO-TUSCOLANA [TUSCOLANA-ARTEMISIO] | Pleistocene caldera of ALBAN HILLS | Italy | |
| ARUBA ROCK | Tuff cone of NAMARUNU | Africa (eastern) | |
| ARUCAS, MONTANA DE | Cone of GRAN CANARIA | Canary Islands | |
| ARUFAT | Synonym of GAMALAMA | Halmahera | |
| ARUFTA | Stratovolcano of GABILLEMA | Africa (northeastern) & Red Sea | |
| ARUICAS, MONTANA | Cone of GRAN CANARIA | Canary Islands | |
| ARUM, GUNUNG | Cone of SUNDORO | Java | |
| ARUSI | Cone of MEGA BASALT FIELD | Africa (northeastern) & Red Sea | |
| AS SAFA | Synonym of ES SAFA | Syria | |
| AS SUMTH [ET-TADAWIN] | Tuff cone of HAYLAN, JABAL | Arabia | |
| ASACHA | Complex volcano | Holocene | Kamchatka Peninsula |
| ASACHA | Synonym of MUTNOVSKY | Kamchatka Peninsula | |
| ASACHA | Synonym of GORELY | Kamchatka Peninsula | |
| ASAHI-DAKE | Stratovolcano of NASU | Honshu | |
| ASAHI-DAKE | Stratovolcano of DAISETSU | Hokkaido | |
| ASAHINA-DAKE | Dome of OSORE-YAMA | Honshu | |
| ASAKIZUKA | Cone of FUJI | Honshu | |
| ASAM, WAI | Thermal Feature of HULUBELU | Sumatra | |
| ASAMA | Complex volcano | Historical | Honshu |
| ASAR | Shield volcano of HENGILL | Iceland (southwestern) | |
| ASASE | Cone of KIKAI | Ryukyu Islands & Kyushu | |
| ASAVIO | Synonym of ASAVYO | Africa (northeastern) & Red Sea | |
| ASAVYO | Shield volcano | Holocene | Africa (northeastern) & Red Sea |
| ASAY KNOLL | Cone of MARKAGUNT PLATEAU | USA (Utah) | |
| ASBORU | Stratovolcano of GABILLEMA | Africa (northeastern) & Red Sea | |
| ASCENSION | Stratovolcano | Holocene | Atlantic Ocean (central) |
| ASDAGA | Synonym of SORK ALE | Africa (northeastern) & Red Sea | |
| ASEBA, OL DOINYO | Cone of CHYULU HILLS | Africa (eastern) | |
| ASH CONE | Cone of MERU | Africa (eastern) | |
| ASH HILL | Tuff cone of AUCKLAND FIELD | New Zealand | |
| ASH MOUNTAIN | Tuya of TUYA VOLCANIC FIELD | Canada | |
| ASH PIT, THE | Cone of SPECTRUM RANGE | Canada | |
| ASHEN HILLS | Cone of MICHAEL | Antarctica & South Sandwich Islands | |
| ASHES VENT FIELD | Thermal Feature of AXIAL SEAMOUNT | Pacific Ocean (northern) | |
| ASHI SHAN | Cinder cone of KUNLUN VOLCANIC GROUP | China (western) | |
| ASHTARAK | Pyroclastic Cone of ARAGATS | Caucasus, Georgia & Armenia | |
| 'ASI, HALA-'L- | Tuff cone of 'UWAYRID, HARRAT | Arabia | |
| ASI, MT. | Cone of SAVAI'I | Samoan & Wallis Islands | |
| ASIN | Thermal Feature of PINATUBO | Luzon | |
| ASIN HOT SPRING | Thermal Feature of NATIB | Luzon | |
| ASK | Thermal Feature of DAMAVAND | Iran & Afghanistan | |
| ASKAHRAUN | Fissure vent of BARDARBUNGA | Iceland (northeastern) | |
| ASKEDNA HOT SPRING | Thermal Feature of BABUYAN CLARO | North of Luzon | |
| ASKJA | Stratovolcano | Historical | Iceland (northeastern) |
| ASLAJ, JABAL | Cinder cone of KISHB, HARRAT | Arabia | |
| ASMARA | Pyroclastic Cone of DAMA ALI | Africa (northeastern) & Red Sea | |
| ASO | Caldera | Historical | Ryukyu Islands & Kyushu |
| ASO-SAN | Synonym of ASO | Ryukyu Islands & Kyushu | |
| ASO-UCHINOMAKI | Thermal Feature of ASO | Ryukyu Islands & Kyushu | |
| ASOBENOMORI | Synonym of IWAKI | Honshu | |
| ASOG | Synonym of IRIGA | Luzon | |
| ASOMADA, MONTANA DE | Cinder cone of HIERRO | Canary Islands | |
| ASOMADAS NEGRAS, MONTANA | Cinder cone of HIERRO | Canary Islands | |
| ASOSOSCA, CERRO | Stratovolcano of PILAS, LAS | Nicaragua | |
| ASOSOSCA, LAGUNA DE | Maar of PILAS, LAS | Nicaragua | |
| ASOSOSCA, LAGUNA DE | Crater of NEJAPA-MIRAFLORES | Nicaragua | |
| ASPERO, CERRO | Dome of PURICO COMPLEX | Northern Chile, Bolivia & Argentina | |
| ASPRONISI | Tuff ring of SANTORINI | Greece | |
| ASSAB VOLCANIC FIELD | Volcanic field | Holocene | Africa (northeastern) & Red Sea |
| ASSALO | Synonym of AYELU | Africa (northeastern) & Red Sea | |
| ASSIRMATSKY | Synonym of EBEKO | Kuril Islands | |
| ASSONGSONG | Synonym of ASUNCION | Izu, Volcano, & Mariana Islands | |
| ASTILLERO, CERRITO EL | Lava cone of CHIQUIMULA VOLCANIC FIELD | Guatemala | |
| ASTILLERO, CERRO EL | Cinder cone of MICHOACAN-GUANAJUATO | México | |
| ASTILLERO, CERRO EL | Cinder cone of SANTA ANA | El Salvador & Honduras | |
| ASTROL, PUIG | Cone of OLOT VOLCANIC FIELD | Western Europe | |
| ASTRONI | Tuff ring of CAMPI FLEGREI | Italy | |
| ASUNCION | Stratovolcano | Historical | Izu, Volcano, & Mariana Islands |
| ASUNCION, LA | Cone of SUCHITAN | Guatemala | |
| ASUR | Synonym of YASUR | Vanuatu | |
| AT-TABAB | Tuff cone of BAL HAF, HARRA OF | Arabia | |
| ATACAMA, VOLCAN DE | Synonym of LICANCABUR | Northern Chile, Bolivia & Argentina | |
| ATACAMA, VOLCAN DE | Synonym of LASTARRIA | Northern Chile, Bolivia & Argentina | |
| ATACAZO | Stratovolcano | Radiocarbon | Ecuador |
| ATAGAWA-KAIKYU | Submarine vent of IZU-TOBU | Honshu | |
| ATAKOR VOLCANIC FIELD | Scoria cones | Holocene | Africa (northern) |
| ATALAYA, LA | Cone of TENERIFE | Canary Islands | |
| ATAPIJUK, BUKIT | Cone of HUTAPANJANG | Sumatra | |
| ATCHI-YAMA [ACHI-YAMA] | Dome of NII-JIMA | Izu, Volcano, & Mariana Islands | |
| ATEXCAC, LAGUNA | Maar of SERDAN-ORIENTAL | México | |
| ATIAMURI | Thermal Feature of MAROA | New Zealand | |
| ATIMBIA, MT. | Cone of SAN PABLO VOLCANIC FIELD | Luzon | |
| ATITLAN | Stratovolcano | Historical | Guatemala |
| ATKA | Stratovolcanoes | Historical | Aleutian Islands |
| ATLACORRA, VOLCAN | Cinder cone of CHICHINAUTZIN | México | |
| ATLAS, MOUNT [MOUNT PLEIONES] | Stratovolcano of PLEIADES, THE | Antarctica & South Sandwich Islands | |
| ATLASOV (ATLASOVA) | Synonym of NYLGIMELKIN | Kamchatka Peninsula | |
| ATLASOV | Fissure vent of KLIUCHEVSKOI | Kamchatka Peninsula | |
| ATLIN VOLCANIC FIELD | Cinder cones | Holocene | Canada |
| ATLIXCOS, LOS | Shield volcano | Holocene | México |
| ATOSA (ATOSANOBORI) | Synonym of ATSONUPURI | Kuril Islands | |
| ATOSANUPURI | Dome of KUTCHARO | Hokkaido | |
| ATOSANUPURI | Synonym of ATSONUPURI | Kuril Islands | |
| ATSONUPURI | Stratovolcano | Historical | Kuril Islands |
| ATTALORA, CUDDIA | Cone of PANTELLERIA | Italy | |
| ATTI-YAMA [ACHI-YAMA] | Dome of NII-JIMA | Izu, Volcano, & Mariana Islands | |
| ATTUS | Dome of GHEGAM RIDGE | Caucasus, Georgia & Armenia | |
| ATUEL, CALDERA DEL | Caldera | Holocene | Central Chile & Argentina |
| ATUG | Cone of MOTLAV | Vanuatu | |
| ATUK MOUNTAIN | Cone of KOOKOOLIGIT MOUNTAINS | Alaska (western) | |
| ATUNAPARA | Thermal Feature of DAWSON STRAIT GROUP | New Guinea & D'Entrecasteaux Islands | |
| ATUPUTIH | Cone of KEMBAR | Sumatra | |
| ATWELL PEAK | Dome of GARIBALDI | Canada | |
| AUCANQUILCHA | Stratovolcano | Pleistocene-Fumarolic | Northern Chile, Bolivia & Argentina |
| AUCKLAND FIELD | Volcanic field | Radiocarbon | New Zealand |
| AUEL | Maar of WEST EIFEL VOLCANIC FIELD | Western Europe | |
| AUGUSTINE | Lava domes | Historical | Alaska (southwestern) |
| AUNUU ISLAND | Tuff cone of TUTUILA | Samoan & Wallis Islands | |
| AUQUIHUATO, CERRO | Cinder cone | Holocene? | Perú |
| AURUHOE [NGAURUHOE] | Stratovolcano of TONGARIRO | New Zealand | |
| AUSOLES | See proper name (e.g. SAN VICENTE, AUSOLES DE) | Spanish for FUMAROLE FIELD | |
| AUSTURHRAUN | Fissure vent of HEKLA | Iceland (southern) | |
| AUVERGNE, MONTS D' | Synonym of CHAINE DES PUYS | Western Europe | |
| AVACHA | Synonym of AVACHINSKY | Kamchatka Peninsula | |
| AVACHI | Cone of AVACHINSKY | Kamchatka Peninsula | |
| AVACHINSKAIA, SOPKA | Synonym of AVACHINSKY | Kamchatka Peninsula | |
| AVACHINSKY | Stratovolcano | Historical | Kamchatka Peninsula |
| AVAZAN | Dome of GHEGAM RIDGE | Caucasus, Georgia & Armenia | |
| AVDALSMOYA | Dome of JAN MAYEN | Atlantic Ocean (Jan Mayen) | |
| AVERNO | Tuff ring of CAMPI FLEGREI | Italy | |
| AVLHAUGENE | Tuff ring of JAN MAYEN | Atlantic Ocean (Jan Mayen) | |
| AWAATUA BAY | Crater of OKATAINA | New Zealand | |
| AWARU RIVER | Synonym of MUSA RIVER | New Guinea & D'Entrecasteaux Islands | |
| AWASA | Pleistocene caldera of CORBETTI CALDERA | Africa (northeastern) & Red Sea | |
| AWATSCHA (AWATSCHINSKIJ) | Synonym of AVACHINSKY | Kamchatka Peninsula | |
| 'AWAYRIDH, HARRAT EL- | Synonym of 'UWAYRID, HARRAT | Arabia | |
| AWIBENGKOK | Thermal Feature of PERBAKTI-GAGAK | Java | |
| AWOE | Synonym of AWU | Sangihe Islands | |
| AWOEH | Synonym of KARANGETANG [API SIAU] | Sangihe Islands | |
| AWU | Stratovolcano | Historical | Sangihe Islands |
| AXIAL GARDENS VENT FIELD | Thermal Feature of AXIAL SEAMOUNT | Pacific Ocean (northern) | |