| English | eng-000 |
| planned language | |
| Afrikaans | afr-000 | kunsmatige taal |
| беларуская | bel-000 | штучныя мовы |
| brezhoneg | bre-000 | yezh kalvezel |
| brezhoneg | bre-000 | yezh savet |
| Deutsch | deu-000 | Plansprache |
| Deutsch | deu-000 | konstruierte Sprache |
| Deutsch | deu-000 | künstliche Sprache |
| English | eng-000 | artificial language |
| English | eng-000 | conlang |
| English | eng-000 | constructed language |
| Esperanto | epo-000 | planlingvo |
| français | fra-000 | langue artificielle |
| français | fra-000 | langue construite |
| galego | glg-000 | ideolingua |
| interlingua | ina-000 | lingua artificial |
| interlingua | ina-000 | lingua construite |
| interlingua | ina-000 | lingua planate |
| italiano | ita-000 | lingua artificiale |
| 日本語 | jpn-000 | 人工言語 |
| ქართული | kat-000 | ხელოვნური ენა |
| 한국어 | kor-000 | 인공어 |
| latine | lat-000 | lingua artificiosa |
| Lingua Franca Nova | lfn-000 | lingua desiniada |
| Nederlands | nld-000 | kunsttaal |
| español | spa-000 | lengua construida |
| svenska | swe-000 | planspråk |