| ISCSI | Internet Small Computer System Interface |
| Ise class battleship | Ise |
| Ise Province | Ise |
| Ise Shrine | Svatyně Ise |
| Isengard | Železný pas |
| Iseo | Iseo |
| Isernia | Provincie Isernia |
| Isfahan | Isfahán |
| Isfahan Province | Isfahán |
| Ishikari River | Išikari |
| Ishikawa | Prefektura Išikawa |
| Ishikawa Prefecture | Prefektura Išikawa |
| Ishim | Išim |
| Ishim River | Išim |
| Ishmael | Izmael |
| Ishtar | Inanna |
| Ishtar Terra | Ishtar Terra |
| Isidor Isaac Rabi | Isidor Isaac Rabi |
| Isidore of Seville | Izidor ze Sevilly |
| Isildur | Isildur |
| Ising | Ising |
| isinglass | slída |
| Isis | Eset |
| Iskra | Spark |
| Isla Aves | Ptáci |
| Isla de Aves | Ptáci |
| Isla Perejil | Isla Perejil |
| Isla Sorna | Isla Sorna |
| Islam | islám |
| Islam in Bosnia and Herzegovina | Islám v Bosně a Hercegovině |
| Islam in Europe | Islám ve Francii |
| Islam in France | Islám ve Francii |
| Islam in Hungary | Islám v Maďarsku |
| Islam in Russia | Islám v Rusku |
| Islam in Slovakia | Islám v České republice |
| Islam in the Czech Republic | Islám v České republice |
| Islam in Ukraine | Islám na Ukrajině |
| Islamabad | Islámábád |
| Islamic | Islám |
| Islamic architecture | Islámská architektura |
| Islamic calendar | Islámský kalendář |
| Islamic calligraphy | Seznam písem |
| Islamic Republic of Iran | Írán |
| Islamic Republic of Pakistan | Pákistán |
| Islamic view of Aaron | Árón |
| Islamic view of Abraham | Abrahám |
| Islamic view of Adam | Adam |
| Islamic view of Ishmael | Izmael |
| Islamic view of Jesus | ISA |
| Islamic view of Moses | Mojžíš |
| Islamic view of Noah | Noe |
| Islamism | Islám |
| Islamite | Muslimové |
| Islamitic | Islám |
| Islamization | Islamizace |
| Islamofascism | Islamofašismus |
| island | ostrov |
| island ecosystem | ekosystém ostrovní |
| Island of California | Kalifornie |
| Island of Mozambique | Mosambik |
| islander | ostrovan |
| islanders | ostrované |
| islands | ostrovy |
| isle | ostrov |
| Isle of Arran | Arran |
| Isle of Jura Single Malt | Isle of Jura |
| Isle of Man | Man |
| Isle of Mann | Man |
| Isle of Mull | Mull |
| Isle of Skye | Skye |
| Isle of the Dead | Ostrov mrtvých |
| Isle of Wight | Wight |
| isles | ostrovy |
| Isles of Scilly | Scilly |
| islet | ostrůvek |
| Islote Horacio | Quintus Horatius Flaccus |
