| German | English |
| Kaiserschnitt | Caesarean Section (Baby) |
| Kaltmiete (KM) | rent without heating expenses included |
| Karfreitag | Easter Friday |
| Karneval | Carnival |
| Karneval der Kulturen | Carnival of Cultures |
| Kartoffeln | potatoes |
| Kaution | deposit (in a rental contract) |
| Kautionsversicherung | landlord guarantee insurance (Landlord) |
| KFZ-Zulassungsstelle | Vehicle Registration Office (Car registration) |
| Kinderarzt | paediatrician (Doctor´s appointment, Baby) |
| Kinderklinik | paediatric clinic (Baby) |
| Kinderkrippe | crèche |
| Kindersitz | child seat |
| Kindertagestätten | kindergarten |
| Kinderuntersuchungsheft | children´s medical examinations booklet (Baby) |
| Kirchensteuer | church tax |
| Kirmes | fair |
| Kleinanzeigen | classifieds section of newspaper |
| Kompost | compost / food waste |
| Kontoauszug | bank statement |
| Kontoüberziehung | overdraft (Bank account) |
| Krabbelgruppen | toddler groups |
| Kraftfahrzeugversicherung | car insurance |
| Kraftfahrzeugzulassung | car registration |
| Krankenhaus | hospital (Baby) |
| Krankenkasse | public health insurer |
| Krankenwagen | ambulance (Doctor´s appointment) |
| Kreditkarte | credit card (Bank account) |
| Küche | kitchen (New home) |
| Kuchen | cake |
