| Consecutio Temporum | consecutio temporum |
| Conquest-Modus | conquest |
| Conquestmodus | conquest |
| conditio humana | human condition |
| Connecticut | Connecticut |
| Connection | connection |
| Konservatorium | conservatoire |
| konfektionieren | accomplish sew |
| absolute Temperatur | absolute temperature thermodynamic temperature |
| Schneckentempo | snail's pace |
| Schritttempo | walking pace walking speed |
| extratemporal | extratemporal |
| kontemporär | at the same time simultaneous |
| Concierge | doorkeeper caretaker |
| Coniacium | Coniacian |
| Controller | controller |
| conchieren | conche |
| Konfektionsgröße | size |
| Konservatismus | conservatism |
| Konservativismus | conservatism |