| konvergent | convergent |
| Konvergenz | convergence |
| konvenient | convenient |
| Kontingent | contingent |
| kontingent | contingent |
| Konvent | convent |
| Konvertit | convert |
| Konferenz | conference |
| Konkurrent | competitor |
| konsequent | consequential forceful |
| divergent | divergent |
| Kondiment | condiment |
| Konkrement | calculus |
| Konvexität | convexity |
| Konzertina | concertina |
| konserviert | canned |
| Konkurrenz | competition competitor |
| Konsequenz | consequence |
| Konserve | preserve |
| Konsument | consumer |