| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| M/T Kaia Knudsen | 1931 | Norway | ||
| M/T Kaldfonn | 1936 | Norway | ||
| D/S Kapland | 1918 | Norway | ||
| M/S Kapp | Unknown | Norway | ||
| M/S Kapp I | 1908 | Norway | ||
| D/S Kaprino | 1907 | Norway | ||
| T/T Kaptein Worsøe | 1944 | Norway | ||
| D/S Kar | 1907 | Norway | ||
| D/S Karen | 1900 | Norway | ||
| D/S Kari | 1920 | Norway | Interned, 1940-6-22 | |
| M/S Kari-Louise | 1884 | Norway | ||
| D/S Karlander | 1914 | Norway | Attacked from air, 1941-5-14 | |
| D/S Karma | 1912 | Norway | ||
| D/S Karmsund | 1904 | Norway | ||
| M/S Karmt | 1938 | Norway | Torpedoed, 1945-4-18 | |
| D/S Karmøy | 1921 | Norway | Attacked from air, 1944-10-28 | |
| M/S Karmøy II | 1918 | Norway | ||
| T/T T2 Karsten Wang | 1944 | Norway | ||
| M/S Kattegat | 1936 | Norway | Hijacked, 1942-5-20 | |
| M/T Katy | 1931 | Norway | ||
| D/S Kaupanger | 1930 | Norway | ||
| V/B Kelt | 1925 | Norway | ||
| D/S Kem | 1925 | Norway | Sunk by mine, 1940-7-24 | |
| D/S Keret | 1927 | Norway | Torpedoed, 1940-8-22 | |
| D/T Ketty Brøvig | 1918 | Norway | Hijacked, 1941-2-2 |