| Konservatorium | conservatoire |
| Observatorium | observatory |
| Konservator | conservator |
| Konservatismus | conservatism |
| konservativ | conservative tory |
| Konservativismus | conservatism |
| Konvervative | conservative |
| Musikkonservatorium | conservatoire |
| Konservativer | conservative |
| Konsortium | consortium |
| Oratorium | oratory |
| Krematorium | crematory crematorium |
| Kuratorium | curatorship |
| Moratorium | moratorium |
| Offertorium | offertory |
| Konferenzraum | meeting room |
| Konsekration | dedication |
| konserviert | canned |
| Kondensator | capacitor |
| Konservierung | conservation preservation mothballing momification |