| Jocotitlan(noun, name, volcano, geology) |
| Jolnir(noun, name, volcano, geology) |
| Jorquera(noun, name, volcano, geology) |
| Kaena Ridge(name, volcano, geology) |
| Karymsky(noun, name, volcano, geology) |
| Katla(noun, name, volcano, geology) |
| Kavachi(noun, name, volcano, geology) |
| Ketoy(noun, name, volcano, geology) |
| Kharimkotan(noun, name, volcano, geology) |
| Kilauea(noun, name, volcano, geology) |
| Kizimen(noun, name, volcano, geology) |
| Ko'olau Range(name, volcano, geology) |
| Kolumbo(noun, name, volcano, geology) |
| Koryaksky(noun, name, volcano, geology) |
| Kozu-shima(noun, name, volcano, geology) |
| Krafla(noun, name, volcano, geology) |
| Kuchinoerabu-jima(noun, name, volcano, geology) |
| Kverkfjoll(noun, name, volcano, geology) |
| La Reforma(name, volcano, geology) |
| Laacher See(expression, name, volcano, geology, inactivity) |