FCK
| Acronym | Definition |
|---|---|
| FCK | Frederico Caldeira Knabben (developer of FCKeditor) |
| FCK | Fussball Club Kaiserslautern |
| FCK | Football Club Copenhagen (Copenhagen, Denmark soccer club) |
| FCK | Football Club Copenhagen (Danish Football Club) |
| FCK | Fashion Community Kitterick |
| FCK | Field Change Kit |
| FCK | Fos Canoë Kayak (French kayaking and canoeing club) |