| Kommunikation | communication |
| Kommunikantin | communicant |
| Exkommunikation | excommunication |
| kommunikativ | communicative |
| Dekommunisation | decommunization |
| Kommunikationsdaten | communication |
| Kommunistin | communist |
| Kommutation | substitution test |
| Komplikation | complication |
| Kommunikant | communicant |
| unkommunikativ | uncommunicative |
| Kombination | combination |
| Kommemoration | commemoration |
| Kommunikationsmodell | communication model |
| Kommunion | Communion |
| Kompensation | compensation |
| Telekommunikation | telecommunication |
| Domestikation | domestication |
| Kodifikation | codification |
| Koedukation | coeducation |