| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S K. G. Meldahl | 1938 | Norway | Torpedoed, 1942-11-10 | |
| M/S Kilstraum | 1891 | Norway | ||
| D/S King | 1918 | Norway | Ran aground, 1941-11-23 | |
| M/S Kinn | 1919 | Norway | ||
| M/S Kinsarvik | 1930 | Norway | ||
| T/T T2 Kirkenes | 1945 | Norway | ||
| D/S Kirsten B | 1930 | Norway | ||
| D/S Kis | 1915 | Norway | ||
| Torpedobåt Kjell | 1912 | Norway | Hijacked, 1940-4-9 | |
| M/S Kjøpsvik | 1919 | Norway | ||
| M/S Klaus | 1913 | Norway | ||
| D/S Klo | 1937 | Norway | ||
| M/T Kløveren | 1938 | Norway | ||
| M/S Knarr | 1938 | Norway | ||
| D/S Knarr | 1892 | Norway | ||
| Fregatt KNM Draug (2) | 1944 | Norway | ||
| D/S Knoll | 1916 | Norway | ||
| M/S Knut | 1916 | Norway | ||
| M/B Knut | 1930 | Norway | Ran aground, 1941-9-28 | |
| M/S Knute Nelson | 1926 | Norway | Sunk by mine, 1944-9-27 | |
| M/S Kola | 1920 | Norway | ||
| D/S Kolbiøn | 1898 | Norway | ||
| D/S Kolbjørn | 1898 | Norway | ||
| M/T Koll | 1930 | Norway | Torpedoed, 1942-4-6 | |
| M/T Kollbjørg | 1937 | Norway | Ran aground, 1943-1-24 |