| Konkurrentin | competitor |
| Konkurrent | competitor |
| Konkurrenz- | competitive |
| Konkurrenz | competition competitor |
| Konkretion | concretion |
| konkurrenzlos | unrivaled |
| Kontrahentin | opponent rival counterparty |
| konkurrieren | compete vie |
| Konkatenation | concatenation |
| Konkrement | calculus |
| Konurbation | conurbation |
| Konkretum | concrete noun |
| Konstantin | Constantine |
| Konsument | consumer |
| Konvention | convention |
| konkludent | conclusive implied |
| konkordant | concordant |
| konkret | concrete |
| konkurrenzfähig | competitive |
| konturieren | outline |