| Part of speech | common noun |
|---|
| Albanian | lis |
|---|---|
| Catalan | roure |
| Czech | dub |
| Danish | eg |
| Dutch | eik; eikeboom |
| English | oak‐tree |
| English (Old English) | ac |
| Esperanto | kverko; glanarbo |
| Faeroese | eik |
| Finnish | tammi |
| French | chêne |
| German | Eiche |
| Greek | βαλανιδία; δρυς |
| Hungarian | tölgy; tölgyfa |
| Icelandic | eik |
| Italian | quercia |
| Latin | quercus |
| Luxemburgish | Eech |
| Malay | ek |
| Norwegian | eiketre; eik |
| Polish | dąb |
| Portuguese | carvalho |
| Romanian | stejar |
| Russian | дуб |
| Saterland Frisian | Eeke; Eekenboom; eekene Boom |
| Scots | aik |
| Scottish Gaelic | darach |
| Spanish | roble |
| Swedish | ek |
| Thai | ไม้โอ๊ก; โอ๊ก |
| Turkish | meşe |
| Welsh | derwen |
| West Frisian | iik; ikebeam; ikelbeam |