Alle mit Nachnamen O
| Name | Vorname | Geburtsdatum | Todesdatum | Todesort |
|---|---|---|---|---|
| Oberheidmann | Hermann | 14/03/1911 | 28/04/1941 | Hadamar |
| Osinski | Helena | 14/02/1925 | 30/05/1943 | Wuppertal |
| Otto | Heinrich | 08/09/1879 | 28/04/1941 | Hadamar |
| Ostheim | Hans | 12/12/1914 | 02/07/1944 | Auschwitz |
| Ollendorf | Hans | 01/07/1902 | 15/11/1941 | Minsk |
| Ohnesorge | Gustav Franz | 28/08/1880 | 16/07/1944 | Meseritz-Obrawalde |
| Oczyredko | Gregor | 07/10/1911 | 08/05/1945 | Wuppertal |
| Osser | Gertrude | 30/04/1900 | 10/09/1942 | Auschwitz |
| O'Connor | Gerard F. | 15/04/1945 | Wuppertal | |
| Oehlingarth | Friedrich | 30/03/1875 | 28/07/1941 | Hadamar |
| Obramtschik | Fedora | 01/01/1913 | 24/03/1944 | Durchgangslager Giebel |
| Ohliger | Ernst Rudolf | 23/10/1878 | 12/08/1944 | Meseritz-Obrawalde |
| Obst | Ernst | 01/06/1907 | 28/04/1941 | Hadamar |
| Oppenheimer | Elsbeth | 02/03/1910 | 15/11/1941 | Minsk |
| Oswald | Elsa | 01/06/1882 | 29/09/1942 | Theresienstadt |
| Ommerborn | Ellenburga | 18/09/1909 | 02/05/1941 | Hadamar |
| Okowski | Elisa | 06/02/1872 | 23/09/1942 | Treblinka |
| Obestinskaja | Eduard | 05/11/1944 | 21/01/1945 | Kolb & Co. |
| Obestinskaja | Eduard | 05/11/1944 | 21/01/1945 | Kolb & Co. |
| Ochel | Edmund | 09/05/1893 | 29/03/1945 | Langenstein-Zwieberge Außenlager KZ Buchenwald |
| Obarzanski | Berta | 11/06/1910 | 22/02/1943 | Auschwitz |
| Opfer | Auguste | 23/03/1903 | 13/06/1944 | Meseritz-Obrawalde |
| Obermeier | August | 21/08/1903 | 17/06/1936 | Von der Heydts Gasse |
| Oschuba | Anny | 30/05/1943 | Wuppertal | |
| Ollendorf | Anna | 01/09/1903 | 11/10/1944 | Auschwitz |