| Kolonel | minion |
| Colonel | minion |
| kolonial | colonial |
| Kolon | colon |
| Kolonie | colony |
| Kolonne | convoy fractionating column |
| Kölner | Cologne inhabitant of Cologne native of Cologne |
| klönen | chat speak |
| klonen | clone |
| Koloman | Colman |
| Kolonist | colonist |
| Kolben | club mace piston butt spadix flask |
| Kolleg | college |
| Koloss | colossus |
| Kolosser | Colossian Colossians |
| Kolter | doona |
| Kolumne | column |
| Köln | Cologne |
| kolossal | colossal huge |
| Ökologe | ecologist |