GKE
GKE stands for:
- Geilenkirchen Air Base , NATO military airfield in Germany (IATA code)
- Saturated calomel electrode
- Cooperative of Catholic noblemen in Bavaria, Bavarian aristocratic association in the Association of German Aristocratic Associations
- Grapefruit seed extract
- Graz-Köflacher Eisenbahn , Austrian railway company, since 2004 GKB (Graz-Köflacher Bahn und Busbetrieb GmbH)