| Kolloquium | colloquium examination symposium test |
| Kollodium | collodion |
| Kolluvium | colluvium |
| Kollegium | collegium |
| Kollyrium | collyrium |
| Kolloid | colloid |
| Koloquinte | colocynth |
| Kolosseum | Colosseum |
| Kollektivum | collective noun |
| Kolostrum | colostrum beestings foremilk |
| Pollinium | pollinium |
| Callovium | Callovian |
| Konsortium | consortium |
| Polonium | polonium |
| Kolonist | colonist |
| kollegial | collegial |
| kolloidal | colloidal |
| kolonial | colonial |
| Kolabaum | kola kola nut tree |
| Kollation | collating collation |