| Name | Build year | Nationality | Bilde | Loss during WW2 |
|---|---|---|---|---|
| M/T Monica | 1932 | Netherlands | ||
| T/T Monocacy | 1943 | USA | ||
| D/S Montana | 1942 | USA | ||
| D/S Montana | 1934 | Panama | Torpedoed, 1941-9-11 | |
| D/S Montanan | 1917 | USA | Torpedoed, 1943-6-3 | |
| T/S Montclare | 1922 | Great Britain | ||
| T/S Monterey | 1932 | USA | ||
| M/S Montevideo | 1928 | Norway | ||
| D/S Montrose | 1939 | Panama | Ran aground, 1942-7-6 | |
| D/S Mooltan | 1923 | Great Britain | ||
| T/T T2 Moors`s Fields | 1944 | USA | ||
| D/S Morazan | 1908 | Panama | Hijacked, 1941-12-8 | |
| D/S Morelos | 1912 | Canada | ||
| D/S Morgan Robertson | 1944 | USA | ||
| M/T Morgenen | 1930 | Norway | ||
| D/S Morild | 1870 | Norway | ||
| Jakt Morild | Unknown | Norway | Sunk by mine, 1942-3-1 | |
| M/K Morild I | 1904 | Norway | ||
| D/S Morinda | 1913 | Great Britain | ||
| D/S Mormacrio | 1919 | USA | ||
| D/S Morrison R. Waite | 1942 | USA | ||
| D/S Morsa | 1929 | Argentina | ||
| M/S Morviken | 1938 | Norway | Hijacked, 1940-8-27 | |
| M/S Mosdale | 1939 | Norway | ||
| D/S Moses Cleaveland | 1943 | USA |