| Kontrahent | opponent rival counterparty |
| Kontrahentin | opponent rival counterparty |
| Konkrement | calculus |
| Kontingent | contingent |
| kontingent | contingent |
| Kontraalt | contralto |
| Kontrakt | compact contract |
| Kontratanz | contra |
| Kontinent | continent |
| Kontrapunkt | counterpoint |
| Kontrast | contrast |
| Kondiment | condiment |
| Kontranym | contranym |
| Kontrollen | control |
| Konvent | convent |
| konstruiert | inkhorn |
| kontrazeptiv | contraceptive |
| kontrieren | double |
| Konkurrent | competitor |
| Konsument | consumer |