| Acronym | Definition |
|---|
| EFK➣Evangeliska FriKyrkan (Swedish denomination) |
| EFK➣Evangeliska Frikyrkan (Swedish: Evangelical Free Church) |
| EFK➣Écoles Françaises de Karting (French: French Karting School) |
| EFK➣École Française de Kite (French: French Kite School) |
| EFK➣École Française du Kansaï (French: French School of Kansai) |
| EFK➣Extended Fisher-Kolmogorov (mathematical equation) |
| EFK➣Eesti Filharmoonia Kammerkoor (Estonian: Estonian Philharmonic Chamber Choir) |
| EFK➣Elasticsearch Fluentd +Kibana (data) |
| EFK➣Electrified (Grid) Fly Killers |
| EFK➣Enskede Frisbee Klubb (Swedish: Enskede Frisbee Club; Enskede, Sweden) |