| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| D/S Lulworth Hill | 1940 | Great Britain | Torpedoed, 1943-3-19 | |
| D/S Luna | 1911 | Norway | Torpedoed, 1939-12-31 | |
| T/T T2 Lundy's Lane | 1943 | USA | ||
| M/S Luossa | 1923 | Sweden | ||
| D/S Lurigethan | 1916 | Great Britain | Attacked from air, 1941-1-23 | |
| T/S Lurline | 1932 | USA | ||
| D/S Lustrous | 1927 | Great Britain | Shelled by gunfire, 1941-2-22 | |
| D/S Lutz | 1933 | Norway | ||
| M/S Luxmi | 1924 | Great Britain | ||
| M/S Lyderhorn | 1942 | Norway | ||
| D/S Lyder Sagen | 1918 | Norway | ||
| D/S Lygra | 1899 | Norway | ||
| M/B Lygrefjord | 1919 | Norway | ||
| D/S Lyng | 1920 | Norway | Collision, 1942-12-9 | |
| D/S Lyngdal | 1912 | Norway | ||
| D/S Lyngen | 1931 | Norway | ||
| D/S Lynghaug | 1919 | Norway | Shuttled, 1944-6-10 | |
| D/S Lyngør | 1884 | Norway | ||
| D/S Lynx | 1925 | Norway | Attacked from air, 1944-9-19 | |
| D/S Lyra | 1912 | Norway | ||
| D/S Lyras | 1918 | Greece | ||
| D/S Lysaker | 1919 | Norway | Attacked from air, 1945-3-23 | |
| D/S Lysaker IV | 1924 | Norway | ||
| D/S Lysaker V | 1936 | Norway | ||
| D/S Lysefjord | 1915 | Norway | Torpedoed, 1943-4-1 |