| Konservator | conservator |
| Konservatorium | conservatoire |
| konservativ | conservative tory |
| Kondensator | capacitor |
| Konservativer | conservative |
| Konstruktor | constructor |
| Unservater | paternoster |
| Konsekration | dedication |
| Konvervative | conservative |
| konserviert | canned |
| Konserve | preserve |
| Konversation | conversation |
| Kommentator | commentator |
| Generator | generator |
| Komparator | comparator |
| Moderator | moderator host master of ceremonies |
| Operator | operator administrator |
| Kondensation | condensation |
| Konservatismus | conservatism |
| Konspiration | conspiracy |