FOK
| Acronym | Definition |
|---|---|
| FOK | Fill or Kill (order; financial) |
| FOK | Feelings of Knowing (psychology) |
| FOK | Finger of Knowledge (Ottawa, Ontario band) |
| FOK | Free of Knots |
| FOK | Friends of Karen, Inc. (Purdys, NY) |
| FOK | Fellowship of Knights (online game community) |