| konkludent | conclusive implied |
| Konkrement | calculus |
| Konkurrent | competitor |
| Konsument | consumer |
| konfluent | confluent |
| konkordant | concordant |
| Kondiment | condiment |
| Kontingent | contingent |
| kontingent | contingent |
| Konvent | convent |
| Konfidenz | confidence trust |
| Konfluenz | confluence |
| Konklave | conclave |
| Konklusion | conclusion |
| Konkordanz | concordance |
| Konkordat | concordat |
| Konkubine | concubine |
| Konkurrenz | competition competitor |
| Kontinent | continent |
| Kontrahent | opponent rival counterparty |