Taal - Philippines         Extra         Extra
Table Top-Wide Bay - Alaska
Tabor - Oregon
Taburete - El Salvador
Tacana Mexico/Guatemala         Extra
Tacora - Chile/Argentina         Extra
Tadanae-jima - Japan
Taftan - Iran
Tahual - Guatemala
Tajumulco - Guatemala
Takachiho - Japan
Takahara - Japan
Takahe - Antarctica
Takawangha - Alaska
Takuan Group - Papua New Guinea
Talagabodas - Indonesia
Talakmau - Indonesia
Talang - Indonesia         Extra
Talo - Papua New Guinea
Tambora - Indonesia         Extra         Extra
Tampomas - Indonesia
Tanada - Alaska
Tanaga - Alaska         Extra
Tandikat - Indonesia
Tangkubanparahu - Indonesia         Extra
Tao-Rusyr Caldera - Russia
Taos - New Mexico
Tarakan - Indonesia
Tarawera - New Zealand
Taryatu-Chulutu Volcanic Field - Mongolia
Tat Ali - Ethiopia
Tata Sabaya - Bolivia         Extra
Tate-yama - Japan
Tateshina - Japan
Tatun Group - Taiwan
Ta'u - Samoan Islands
Tauhara - New Zealand
Taunshits - Russia
Taupo Caldera - New Zealand
Taupo Volcanic Center - New Zealand
Taus Plateau Volcanic Field - New Mexico
Taveuni - Fiji
Tavurvur - Papua New Guinea
Taylor - New Mexico
Teahitia - Pacific Ocean (France)
Tecapa - El Salvador
Tecuamburro - Guatemala
Teide - Canary Islands
Telica - Nicaragua         Extra
Telomoyo - Indonesia
Telong - Indonesia
Tenduruk Dagi - Turkey
Tenerife - Canary Islands         Extra
Tengchong - China
Tengger Caldera - Indonesia
Tenjosan - Japan
Tenorio - Costa Rica
Teon - Indonesia
Tepi - Ethiopia
Terceira - Azores
Terror - Antarctica
Teyr - NE Africa
Theistareykjarbunga - Iceland
The Barrier - eastern africa
The Quill - St. Kitts and Nevis         Extra
Thielsen - Oregon
Thompson Island - Atlantic Ocean (Norway)
Three-Fingered Jack - Oregon
Three Sisters - Oregon         Extra
Thule Islands - S. Sandwich Islands
Tianshan Volcanic Group - China
Tiatia - Russia
Tibesti Volcanic Complex - Chad
Ticsani - Peru
Tidore - Indonesia
Tieroko - Chad
Tigalalu - Indonesia
Tiho Volcanic Field - Djibouti
Tilaran - Costa Rica
Timber Mountain Caldera - Nevada
Timber Mountain Volcanic Field - Nevada
Timmi - Chad
Tinakula - Solomon Islands
Tindfjallajokull - Iceland
Tinguiririca - Chile
Tipas - Argentina         Extra
Titila - Russia
Tjornes Fracture Zone - Iceland
Tlevak Strait-Suemez Island Volcanic Field - Alaska
Toba - Indonesia         Extra
Tobaru - Indonesia
Toconce - Chile
Tocopuri - Chile/Bolivia         Extra
Todoko-ranu - Indonesia         Extra
Tofua - Tonga
Toh Volcanic Field - Chad
Tokachi - Japan         Extra
Tolbachik(Ostry and Plosky) - Russia         Extra
Tolguaca - Chile
Tolima - Colombia
Toliman - Guatemala         Extra
Tolmachev Dol - Russia
Toluca - Mexico
Tondano Caldera - Indonesia
Toney Mountain - Antarctica
Tongariro Volcanic Center - New Zealand         Extra
Tongkoko - Indonesia
Toomba - Australia
Toon - Chad
Tore - Papua New Guinea
Torfajokull - Iceland
Torishima - Japan
Toroeng Prong - Vietnam
Tosa Sucha - Ethiopia
Toshima - Japan
Tousside - Chad         Extra
Tovanumbatir - Papua New Guinea
Towada - Japan         Extra
Toya Caldera - Japan
Traitor's Head - Vanuatu         Extra
Tres Virgenes - Mexico
Trident - Alaska         Extra
Trindade - Brazil
Tri Sestry - Russia
Tristan da Cunha - Atlantic Ocean (UK)
Trolladyngja - Iceland
Tromen - Argentina
Trou au Natron - Chad
Tseax River Cones - Canada
Tshibinda - Dem. Rep. of the Congo
Tskhouk-Karckar - Armenia/Azerbaijan
Tsurumi - Japan         Extra
Tucle - Chile
Tujile - Chile
Tulabug - Ecuador
Tullu Moje - Ethiopia
Tumble Buttes - California
Tundroviy - Russia
Tungnafellsjokull - Iceland
Tungurahua - Ecuador         Extra
Tunkin Depression Volcanic Field - Russia
Tupungatito - Chile/Argentina
Turangunan - Papua New Guinea
Turfan - China
Turkana District - Kenya
Turrialba - Costa Rica
Tutuila - Samoan Islands
Tutupaca - Peru         Extra
Tuya Butte - Canada
Tuzgle - Argentina         Extra
Tuzovsky - Russia
Twin Buttes - California