| Konsumentenkredit | consumer credit |
| Konsumverweigerin | anti-consumer |
| Konturentreue | definition |
| Konsument | consumer |
| konsumieren | consume |
| Posamentiererin | haberdasher lace-maker trimming-maker |
| Komponententest | unit test |
| kostenfrei | cost-free free of cost |
| Konservenfabrik | cannery |
| Konsumverweigerer | anti-consumer |
| Konsumware | commodity |
| Kontinentaldrift | continental drift |
| Konvenienzehe | marriage of convenience |
| Konventikel | conventicle |
| Königsenkelin | princess |
| kontextfrei | context-free |
| konzenterieren | center |
| Ökonometrikerin | econometrician |
| Konstantinopel | Constantinople |
| Konzentrat | concentrate |