| Sangay(noun, name, volcano, geology) |
| Shimabara(noun, volcano, settlement, habitation) |
| Shiveluch(noun, name, volcano, geology) |
| Snaefellsjokull(noun, name, volcano, geology) |
| Soputan(noun, name, volcano, geology) |
| Stromboli(noun, name, volcano, geology) |
| Submarine(noun, name, volcano, geology) |
| Sunset Crater(expression, name, volcano, geology, inactivity) |
| Surt(noun, name, volcano, geology) |
| Surtsey(noun, name, volcano, geology) |
| Suwanosejima(noun, name, volcano, geology) |
| Tal Al-Gharam(expression, name, volcano, geology, inactivity) |
| Taupo(noun, volcano, settlement, habitation) |
| Tavurvur(noun, name, volcano, geology) |
| Teahitia(noun, name, volcano, geology) |
| Teide(noun, name, volcano, geology) |
| Telica(noun, name, volcano, geology) |
| Thor(noun, name, volcano, geology) |
| Three Sisters(expression, name, volcano, geology, inactivity) |
| Tinakula(noun, name, volcano, geology) |