| Konzeptalbum | concept album |
| konzeptuell | conceptual |
| Konnetabel | constable |
| Konzept | draft concept conception |
| Konzeption | conception |
| Konzerthaus | concert hall concert house |
| Konzertflügel | concert grand |
| Konzertierung | conciliation |
| Konzertina | concertina |
| Konzetti | extended metaphor |
| Konjektur | conjecture |
| Konkretum | concrete noun |
| Konsortium | consortium |
| Kontextmenü | context menu |
| Kontinuum | continuum |
| Kontrazeptivum | contraceptive |
| Konzentrat | concentrate |
| Konzentration | concentration |
| Konzert | concert |
| Konzertreise | concert tour |