| Kontratanz | contra |
| Contra Tanz | contra |
| Kontraalt | contralto |
| Konstanz | constancy Constance |
| Kontrabass | double bass double-bass |
| Kontrahent | opponent rival counterparty |
| Konstanze | Constance |
| Kontrakt | compact contract |
| Kontranym | contranym |
| Kontrebande | contraband |
| Kongruenz | agreement, concord congruity |
| Konkordanz | concordance |
| Konsistenz | consistency |
| Konstanza | faithfulness |
| Kontingenz | contingency attunement |
| Kontra | con double |
| kontra | against versus |
| Kontraktion | contraction |
| Kontraktur | contracture |
| Kontrapunkt | counterpoint |