| Name | Rank | Born | Died | Notes [+ indicates died while crew of boat] |
| Almes | Heinz | OGfr | 28.10.1920 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Androes | Günter | OMasch | 30.01.1914 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Bartke | Erwin | OLt.z.S | 28.04.1909 | 29.03.1945 | U-403. 2WO.06.41-11.42. U-488. Cdr.01.02.43-02.44. U-1106+ Cdr.05.07.44-29.03.45 birthplace Königsberg lost N.E.of Faroes serial/entry Entry 1940. |
| Baumann | Wilhelm | Gfr | 27.02.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Bitterlich | Helmut | ObGfr | 09.06.1922 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Bormann | Walter | ObGfr | 03.01.1921 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Brandes | Gerhard | ObGfr | 25.08.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Bräutigam | A | OGfr | 03.01.1923 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Busacker | Bodo | OLt.z.S | 06.04.1918 | 18.08.1943 | U-403+ 1WO lost Mid Atlantic near Dakar |
| Buss | | Lt.z.S | | | U-403 |
| Butenhof | Kurt | ObGfr | 02.11.1920 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Clausen | Heinz-Ehlert | KpLt | 12.07.1909 | | U-18. OStrm. U-101. training.02.41-05.41. U-403. Cdr.25.06.41 to 15.06.43 birthplace Rodewald serial/entry Entry 1932 |
| Dahmen | Josef | MtrOGfr | 01.06.1922 | 18.08.1943 | U-403+ birthplace Koslar lost Mid Atlantic near Dakar |
| Daniels | Theodor | ObMt | 05.05.1919 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Dilcherd | Heinz | ObGfr | 25.03.1922 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Ebke | Friedrich | ObMt | 19.07.1918 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Eckoldt | Max | KpLt.ing | 21.02.1916 | 12.01.1962 | "U-560. U-402. U-403. ""Gneisenau"". ""Prinz Eugen""." lost Frankfurt / main |
| Ehrenforth | Alfred-Otto | ObGfr | 18.08.1922 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Faber | Martin | OGfr | 15.03.1921 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Falkenhahn | Günther | Gfr | 03.04.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Fellmann | Joachim | ObGfr | 10.04.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Gesche | Kurt | Lt.z.S | 10.04.1921 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Haberzettl | Oswin | ObGfr | 20.07.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Hache | Walter | ObGfr | 22.08.1922 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Heel | Rudolf | ObGfr | 22.03.1922 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Heike | Willi | Gfr | 21.09.1923 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Heine | Karl-Franz | KpLt | 30.10.1915 | 17.08.1943 | U-303. Cdr.(07.42-05.43) U-403+ Cdr.(06.43-08.43) birthplace Kiel lost Off Dakar serial/entry Crew of 1934 |
| Hennicke | Horst | Lt.ing | 28.09.1921 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Hoffmann | Klaus | KpLt.ing | 30.08.1917 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar serial/entry Class of 1936. |
| Hopfeld | Helmut | FkMt | 02.07.1917 | 22.12.1941 | U-403+ Boat was still in training |
| Hoppe | Günter | Dr | 27.03.1915 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Horn | Heinz | | | | U-403. U-746 |
| Jänsch | Hermann | ObGfr | 20.03.1923 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Kalweit | Heinz | ObMt | 23.03.1917 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Kleemeier | Hermann | ObGfr | 25.07.1923 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Leschmann | Erich | Gfr | 20.10.1924 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Löffler | Otto | Maat | 18.12.1919 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Lucas | Erich | ObGfr | 16.06.1920 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Mannke | Willi | ObMt | 06.11.1919 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Mehnert | Helmut | ObMt | 24.03.1919 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Meier | Ernst | OStrm | 16.11.1914 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Meyfarth | Hans | Gfr | 18.08.1923 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Mittelstädt | Kurt | ObGfr | 11.02.1920 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Mohlberg | Mathias | Maat | 08.03.1918 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Neuhauser | Karl | Gfr | 20.07.1924 | 11.07.1944 | U-403+ 2 patrols birthplace Ach-Wanghausen lost W.of La Rochelle |
| Otto | Hermann | KpLt | 30.05.1914 | 24.06.1943 | U-403. 1WO.(06.41-06.42) U-449+ Cdr.(08.42-06.43) birthplace Leising lost N.W.of Cape Ortegal serial/entry Crew of 1934 |
| Pasemann | Erich | ObGfr | 22.12.1921 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Peters | Hans-Joachim | OMt | 07.04.1920 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Post | Wilhelm | Maat | 22.11.1919 | 18.08.1943 | U-403+ lost Mid Atlantic near Dakar |
| Reiter | Dominik | MaschOGfr | 05.08.1921 | 18.08.1943 | U-403+ birthplace Dillingen/Saar lost Mid Atlantic near Dakar |