| Konnotation | connotation |
| Konvokation | convocation |
| Annotation | annotation |
| Konsultation | consultation |
| Konurbation | conurbation |
| Konformation | conformation |
| Konfrontation | confrontation |
| Konjugation | conjugation |
| Innovation | innovation |
| Denotation | implications import |
| Notation | musical notation |
| Kommutation | substitution test |
| Kooptation | co-optation co-option |
| Kollokation | collocation |
| Kondensation | condensation |
| Konduktion | conduction |
| Konkatenation | concatenation |
| Konkretion | concretion |
| Konsekration | dedication |
| Konspiration | conspiracy |