| Kolophonium | rosin colophony resin |
| Kolophon | colophon |
| Kollodium | collodion |
| Polonium | polonium |
| Homophonie | homophony |
| Kakophonie | cacophony |
| Euphonium | euphonium |
| Monopodium | monopodium |
| Kolluvium | colluvium |
| Kolonist | colonist |
| Kolosseum | Colosseum |
| kolonial | colonial |
| Kollegium | collegium |
| Kolloquium | colloquium examination symposium test |
| Kollyrium | collyrium |
| Kolonie | colony |
| Koloskopie | colonoscopy |
| Kolostrum | colostrum beestings foremilk |
| Kolumbarium | columbarium |
| Allophone | allophone |