GKK
| Acronym | Definition |
|---|---|
| GKK | Gesetzlichen Krankenkassen (German: State Sickness Fund; health insurance) |
| GKK | Goju Ryu Karate Do Kyokai (Toledo, Ohio) |
| GKK | Grih Kalyan Kendra (Indian society) |
| GKK | Gawad Kaligtasan at Kalusugan (Filipino: Safety and Health Award; Department of Labor and Employment) |
| GKK | Groninger Kunstenaars Kollektief (Dutch: Groninger Artists Collective) |
| GKK | Grodziski Klub Koszykarski (Polish basketball club) |