| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| HMT Laccennia | Unknown | Great Britain | ||
| D/S Lady Denison-Pender | 1920 | Great Britain | ||
| D/S Lake Hallwil | 1907 | Great Britain | ||
| D/S Lancastrian Prince | 1940 | Great Britain | Torpedoed, 1943-4-12 | |
| D/S Lansing | 1890 | Great Britain | ||
| D/S Lapland | 1936 | Great Britain | Torpedoed, 1941-7-28 | |
| D/S Laranah | 1914 | Great Britain | ||
| M/T Laurelwood | 1929 | Great Britain | ||
| M/S Lautaro | 1915 | Great Britain | ||
| Landgangsfartøy L.C.G.(L)939 | 1944 | Great Britain | ||
| D/S Leana | 1914 | Great Britain | Torpedoed, 1943-7-7 | |
| D/S Ledbury | 1913 | Great Britain | Torpedoed, 1939-10-24 | |
| M/S Leighton | 1921 | Great Britain | ||
| D/S Lesto | 1918 | Great Britain | ||
| T/S Lifland | 1920 | Great Britain | Torpedoed, 1942-9-29 | |
| D/S Lindisfarne | 1925 | Great Britain | ||
| D/S Llandilo | 1928 | Great Britain | Torpedoed, 1942-11-2 | |
| M/S Llangibby Castle | 1929 | Great Britain | ||
| D/S Llanstephan Castle | 1914 | Great Britain | ||
| D/S Loch Dee | 1937 | Great Britain | ||
| M/T Loch Rannoch | 1998 | Great Britain | ||
| D/S London II | 1924 | Great Britain | Attacked from air, 1941-3-22 | |
| D/S L'Orage | 1921 | Great Britain | ||
| D/S Lornaston | 1925 | Great Britain | Torpedoed, 1945-3-8 | |
| M/S Lovat Salvator | 1976 | Great Britain |