| 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) |
| Laacher See(expression, name, volcano, geology, inactivity) |
| Lake Bolsena(expression, name, volcano, geology, inactivity) |
| Laki(noun, name, volcano, geology) |
| Langila(noun, name, volcano, geology) |
| Larderello(noun, volcano, settlement, habitation) |
| Lascar(noun, name, volcano, geology) |
| Lautaro(noun, name, volcano, geology) |
| Leroboleng(noun, name, volcano, geology) |
| Lewotobi(noun, name, volcano, geology) |
| Lewotolo(noun, name, volcano, geology) |
| Lipari(noun, volcano, settlement, habitation) |
| Ljosufjoll(noun, name, volcano, geology) |
| Llaima(noun, name, volcano, geology) |
| Lonquimay(noun, name, volcano, geology) |