| Konsequenzargument | consequence argument |
| Konsequenzialismus | consequentialism |
| Gegenargument | counterargument |
| Konferenzraum | meeting room |
| Konsequenz | consequence |
| konsequent | consequential forceful |
| Funktionsargument | argument |
| Totschlagargument | deathblow argument killer phrase knockdown argument reductio ad Hitlerum |
| Konsument | consumer |
| konvergent | convergent |
| Dammbruchargument | slippery slope |
| Kondeszendenz | condescension |
| Konkrement | calculus |
| Konnossement | bill of lading |
| Konservatorium | conservatoire |
| Konservenfabrik | cannery |
| Konsumware | commodity |
| Kontingent | contingent |
| kontingent | contingent |
| Konturentreue | definition |