| Koalitionsvertrag | coalition agreement |
| Koalitionspartner | coalition partner |
| Koalitionsrechner | coalition builder |
| Konditionierer | conditioner |
| Darlehensvertrag | loan |
| Friedensvertrag | peace treaty |
| Arbeitsvertrag | employment contract work contract |
| Staatsvertrag | state treaty |
| Kreditvertrag | credit agreement loan agreement |
| Kapitalertrag | capital gain investment income property income |
| Koalition | coalition |
| Politisierung | politicization |
| konditionieren | condition |
| kollationieren | collate |
| Generationenvertrag | inter-generational contract |
| Kollisionsrecht | private international law |
| Kollisionskurs | collision course |
| Ausbildungsvertrag | indenture |
| Handelsvertrag | trade agreement |
| Jahresvertrag | contract by the year |