| Name | Rank | Born | Died | Notes [+ indicates died while crew of boat] |
| Becker | Günter | MaschGfr | 28.03.1924 | 30.07.1943 | "U-504+ British Sloops HMS Kite, HMS Woodpecker, HMS Wren and HMS Wild Goose. All crew lost." lost W.of Cape Ortegal. 45.33N. 10.56W. |
| Beckmann | Heinz | OLt.z.S.d.R.01.03.43 | 29.06.1913 | 28.07.1943 | U-504. 2WO.02.42-0343. U-159+ Cdr.07.06.43-28.07.43 birthplace Hamburg lost S.of Haiti serial/entry Entry X/1939. |
| Berrey | Günter-Hans | Lt.z.S | 15.04.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal serial/entry Crew of X/1940 |
| Beurer | Franz | BtsMt | 10.09.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Biedebach | Heinz | MaschMt | 04.11.1920 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Bohn | Albert | MaschGfr | 03.10.1921 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Breitmoser | Friedrich-Karl | MaschMt | 11.03.1921 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Bromann-Sprzagata | Kurt | | 16.05.1922 | | U-504. U-67 birthplace Madgeburg |
| Buchholz | Siegfried | MaschMt | 28.03.1920 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Buro | Hans | FkOGfr | 10.04.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Diergardt | Karl-Heinz | FkMt | 29.01.1921 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Dörfert | Willi | MaschOGfr | 09.06.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Gausmann | Fritz-Johannes | MaschOGfr | 26.02.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Griephan | Herbert | | 27.03.1922 | 20.01.1999 | U-504. U-575. surv |
| Hartung | Otto | MaschOGfr | 09.05.1921 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Hauser | Wilhelm-August | OMechMt | 27.05.1916 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Hiereth | Franz | MaschGfr | 22.04.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Hilsheimer | Helmut | | | | U-504 |
| Himmelmann | Helmut | OMasch | 17.10.1917 | 26.02.1984 | U-29. U-547. U-504 awards DKiG. 24.08.44.(U-547). |
| Hinz | Leo | MaschMt | | | U-504. U-1229. Pow.20.08.44.(age 23) |
| Jadwitschack | Karl-Ernst | MtrGfr | 08.11.1924 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Junk | Johann | MtrOGfr | 16.03.1920 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Kaiser | Ernst | Fk | | | U-504 |
| Kaletta | Günter | OFkMt | 18.11.1919 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Kallmeyer | Erich | MtrGfr | 23.07.1924 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Kasobke | Walter | | 05.01.1917 | | U-504 birthplace Eisenach |
| Kaufer | Karl-Heinz | MtrOGfr | 16.10.1921 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Kernig | Egon | | | | U-504 |
| Kiepert | Helmut | KpLt.ing.LI | | | U-552. U-504 awards DKiG. 19.05.43.(U-504). |
| Klauß | Johannes-Alfred | OMasch | 31.10.1916 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Knackstedt | Otto | MtrOGfr | 18.01.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Knaffla | Heinrich | MaschGfr | 23.12.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Korzuschnik | Gerhard-Gregor | MtrGfr | 17.11.1924 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Lierse | Johannes | Mtr | 02.11.1921 | 01.03.1944 | U-66. U-504. U-709+ lost N.of Azores |
| Lipka | Lothar | OMasch | 11.11.1919 | 30.07.1943 | U-505. MaschMt.(08.41-12.42). U-504+ lost W.of Cape Ortegal |
| Lipke | Erich | MaschOGfr | 12.05.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Lippka | Helmut-Wilhelm | BtsMt | 13.11.1915 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Luis | Wilhelm | Kkapt.01.07.43 | 13.12.1915 | 30.07.1943 | Luftwaffe.(10.37-12.40). U-504+ 1WO.(07.42-12.42) Cdr.(01.43-07.43) birthplace Lübeck lost W.of Cape Ortegal serial/entry Crew of 1935 |
| Matten | Heinrich | MaschOGfr | 02.03.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Mühlfriedel | Franz | MechGfr | 03.03.1924 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Nordhausen | Wolfgang | Dr | 20.05.1912 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Obendorfer | Johann | MtrOGfr | 21.11.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Pilz | Günther | MechGfr | 16.02.1923 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Poske | Hans-Georg-Friedrich (Fritz) | Kapt.z.S.01.10.43 | 23.10.1904 | 01.10.1984 | """NURNBERG"".N.O.(12.39-04.40). ""GRILLE"". Cdr.(06.40-11.4). U-504. Cdr.(07.41-01.43)." birthplace Berlin-Schöneberg serial/entry Crew of 1923 awards Knights Cross.06.11.42. |
| Quertin | Hans | Lt.z.S | 01.10.1916 | 20.08.1944 | "U-504. U-1229+ 1WO. was formerly quartermaster on U-504 under Poske. He was popular with the crew, particularly as he couldn't get along with the captain. He wore the Iron Cross 1st class." lost S.S.E.of Cape Race |
| Rabenau von | Georg | KpLt.01.08.43 | 03.07.1916 | 29.03.1991 | Luftwaffe. U-504. 1WO.(07.41-07.42). U-528. Cdr.(12.42-05.43) pow birthplace Stassfurt-Leopoldshall serial/entry Crew of 1936 |
| Rausch | Peter | MaschOGfr | 14.03.1922 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Reimann | Willi | MechGfr | 27.08.1924 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |
| Rode | Karl | OMaschMt | 15.11.1914 | | U-26. U-34. U-64. U-124. U-504. UIT-21 |
| Sassendorf | Günter | MtrOGfr | 23.07.1922 | 30.07.1943 | U-504+ lost W.of Cape Ortegal |