| Christiansen, Georg | 21-10-1914 | 14-06-1997 | |
| Christophersen, Erwin (U-228) | 13-04-1915 | 04-05-1945 | |
| Ciupka, Stephan (U-306) | 24-12-1916 | 31-10-1943 | |
| Claas, Otto | 16-11-1919 | | |
| Claasen, Karl (U-516) | 02-07-1903 | | |
| Clare, Helmut | 16-05-1914 | | |
| Clausen, Hermann (S-29) | 25-07-1896 | | |
| Clausen, Karl (Flottillenadmiral) | 09-10-1916 | 00-00-2013 | |
| Clauß, Robert (VB-20) | 12-09-1894 | 05-03-1974 | |
| Clemen, Martin | 28-03-1918 | | |
| Clobes, Heinrich (U-1231) | 19-09-1919 | 20-11-1989 | |
| Cohausz, Hans | 30-11-1907 | | |
| Colsmann, Walter | 01-09-1915 | | |
| Conen, Karl (U-460) | 26-10-1913 | | |
| Cordes, Ernst (U-1195) | 26-06-1913 | 06-04-1945 | |
| Cordes, Walter ('M-416') | 23-06-1906 | | |
| Cornelsen, Walter (U-125) | 21-08-1916 | | |
| Czeczatka, Erich (U-302) | 04-02-1920 | 06-04-1944 | |
| Czublinski, Bruno (U-997) | 03-04-1921 | 18-04-1977 | |