| Name | Rank | Born | Died | Notes [+ indicates died while crew of boat] |
| Balke | Herbert | KpLt | 24.09.1913 | | U-503. U-278 birthplace Dortmund |
| Baunach | Erich | MaschGfr | 12.01.1922 | 15.03.1942 | U-503+ US Hudson aircraft (Sqdn VP-82). All crew lost lost S.E.of Newfoundland. 45.50N. 48.50W. |
| Black | Jakob | Btsm | 24.07.1900 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Böhnke | Fritz | BtsMt | 27.10.1918 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Bongard | Johann | MtrGfr | 19.11.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Borsch | Peter | MaschMt | 11.01.1918 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Breuer | Josef | MtrGfr | 11.09.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Brom | Georg | MaschMt | 21.06.1918 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Brüchmann | Gerhard | MtrGfr | 27.08.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Cornelius | Justus | Lt.z.S | 29.12.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland serial/entry Crew of 1938 |
| Crisandt | Walter | OMasch | 06.05.1916 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Czerniejewski | Franz | MaschOGfr | 11.10.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Dinges | Karl | MtrGfr | 29.10.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Döbler | Walter | MaschGfr | 16.01.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Dreyer | Ernst | Ostrm | 31.03.1885 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Ehrhardt | Günther | MaschGfr | 15.07.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Feierabend | Ernst | MaschOGfr | 04.04.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Gellings | Fritz | MaschGfr | 25.05.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Gericke | Otto-Walter | Kkapt.01.12.43 | 29.12.1908 | 15.03.1942 | """Z-17"".(08.38-05.40). U-17. (01.41-03.41). U-503+ Cdr.(07.41-03.42)." birthplace Hagenau lost S.of Newfoundland serial/entry Crew of 1933 |
| Hackradt | Karl | MaschOGfr | 10.12.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Herrmann | Hans | MaschMt | 03.10.1918 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Hippe | Horst | FkOGfr | 06.03.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Hirndorf | Helmut | OMasch | 30.11.1913 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Horn | Wolfgang | Fähnr.z.S | 25.04.1923 | 15.03.1942 | U-503+ lost S.E.of Newfoundland serial/entry Crew of X/1940 |
| Jung | Friedrich | MaschGfr | 15.08.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Karl | Hans-Ottmar | MaschMt | 15.10.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Knust | Heinrich | MaschGfr | 20.10.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Kranz | Erwin-Fritz | MaschMt | 06.08.1917 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Krug | Fritz | MaschGfr | 28.11.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Kuhnke | Günter-Georg | MaschMt | 27.10.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Latz | Franz | MaschGfr | 26.01.1922 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Lawicki | Leo | MtrGfr | 15.04.1922 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Linke | Walter-Helmut | MtrOGfr | 30.08.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Mehlgarten | Theodor | Fähnr.z.S | 10.09.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Müller | Helmut | KpLt.ing | 08.12.1913 | 15.03.1942 | U-503+ birthplace Soltau lost S.E.of Newfoundland serial/entry Crew of 1934 |
| Müller | Johannes | FkMt | 08.03.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Müller | Otto | MaschMt | 31.03.1918 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Nass | Willi | MechMt | 26.08.1917 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Oberst | Johann | MtrOGfr | 25.01.1922 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Panniger | Willi | MtrGfr | 13.11.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Rausch | Wilhelm | MaschOGfr | 10.10.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Sagratzki | Karl-Heinz | FkOGfr | 15.06.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Scheidsteger | Rudolf | FkMt | 13.08.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Schiffer | Wilhelm | MaschOGfr | 29.04.1921 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Schlegel | Werner | OLt.z.S | 25.10.1916 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Sternke | Karl | MtrOGfr | 02.03.1922 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Vogt | Kurt | MtrOGfr | 29.11.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Wittorf | Max | OStrm | 15.02.1914 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Wolf | Leopold | MechGfr | 21.02.1920 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |
| Wollseifer | Christian | MaschOGfr | 16.12.1919 | 15.03.1942 | U-503+ lost S.E.of Newfoundland |