GKK
GKK stands for:
- Gauss-Krüger coordinate system
- DC short coupling, a type of coupling of different power grids, see HVDC short coupling
- Austrian regional health insurance fund
- Gardener's health insurance
- Joint power station in Kiel
- Auditory ossicle chain, see auditory ossicles
- Kooddoo Airport (IATA code), Kooddoo airfield , Gaafu Alif Atoll, Maldives
