| Name | Other Name | Family | Nativ Name | ISO6391 Code | ISO6392T Code | ISO6392B Code | ISO6393 Code | Notes |
|---|---|---|---|---|---|---|---|---|
| Limburgan | Limburger;Limburgish | Indo-European | Limburgs | li | lim | lim | lim | |
| Luxembourgish | Letzeburgesch | Indo-European | Lëtzebuergesch | lb | ltz | ltz | ltz | |
| Kirghiz | Kyrgyz | Turkic | Кыргызча; Кыргыз тили | ky | kir | kir | kir | |
| Kuanyama | Kwanyama | Niger–Congo | Kuanyama | kj | kua | kua | kua | |
| Haitian | Haitian Creole | Creole | Kreyòl ayisyen | ht | hat | hat | hat | |
| Kalaallisut | Greenlandic | Eskimo–Aleut | kalaallisut; kalaallit oqaasii | kl | kal | kal | kal | |
| Kikuyu | Gikuyu | Niger–Congo | Gĩkũyũ | ki | kik | kik | kik | |
| Dutch | Flemish | Indo-European | Nederlands; Vlaams | nl | nld | dut | nld | |
| Divehi | Dhivehi;Maldivian | Indo-European | ދިވެހި | dv | div | div | div | |
| Church Slavic | Church Slavonic;Old Church Slavonic;Old Slavonic;Old Bulgarian | Indo-European | ѩзыкъ словѣньскъ | cu | chu | chu | chu | ancient; in use by Orthodox Church |