| Konferenzsaal | meeting room |
| Konferenzraum | meeting room |
| Konferenz | conference |
| Konzertsaal | concert hall |
| Differenzial | differential |
| differenzial | differential |
| Königreichssaal | Kingdom Hall |
| kontinental | continental |
| Kondensat | condensate |
| Konfidenz | confidence trust |
| Konteradmiral | counter admiral |
| Konvergenz | convergence |
| kongenial | congenial |
| kongenital | congenital |
| Inferenz | inference |
| Konformismus | conformism |
| Konformist | conformist |
| Konkurrenz- | competitive |
| Konterschnaps | hair of the dog |
| Kontingenztafel | cross tabulation |