 | Obora, Edward | 05-10-1913 | 03-11-1944 |  |
 | Ocheduszko, Romuald | 15-01-1911 | 13-05-1944 |   |
 | Odzierzynski, Roman Wladyslaw | 28-02-1892 | 09-07-1975 |      more |
| Ogrodnik, Tadeusz | 11-11-1917 | 27-08-1944 | |
| Oksza-Grabowska, Anna | 23-10-1896 | 16-07-1946 | |
 | Okulicki, Leopold "Niedzwiadek" | 12-11-1898 | 24-12-1946 |    more |
| Olczak, Leon | | |  |
| Olden, Franciszek | | | |
| Oleksinski, Jan | 14-08-1912 | 05-04-1945 | |
| Olesinski, Czeslaw | | |   |
 | Olma, Jan | 09-06-1916 | 14-03-1945 | |
| Olszewski, Boleslaw | 07-12-1907 | 02-06-1940 | |
| Olszewski, Ignacy | 13-07-1913 | 16-09-2004 |    more |
| Olszewski, Jozef | | 14-09-1945 | |
 | Olszewski, Stanislaw | 28-03-1912 | 01-03-1994 |  |
| Olszewski, Stanislaw | 02-12-1914 | 25-09-1944 | |
 | Omylak, Franciszek Kazimierz | 14-09-1907 | 28-08-1944 |  |
| Opiela, J. E. | 00-00-1919 | 24-03-1944 | |
 | Orlik-Lukoski, Kazimierz | 13-10-1890 | 00-04-1940 |   more |
 | Orlinski, Boleslaw | 13-04-1899 | 28-02-1992 |     more |
| Orlowski, Stanislaw | | |  |
 | Oronowski, Tadeusz | 14-11-1925 | 28-10-1983 |  |
| Orzechowski, Jan | 05-05-1905 | 27-02-1942 | more |
| Orzechowski, Stanisław | 18-02-1910 | 29-10-1944 | |
| Orzelek, Szeslaw | 12-02-1916 | 20-04-1945 | |
| Osadzinski, Alfred Zdzislaw | 12-09-1916 | 06-04-1942 | |
| Osieleniec, Kazimierz | 31-07-1918 | 21-04-1944 |  |
| Osika, Witold Stanislaw | 08-05-1921 | 28-05-1944 | |
| Osinski, Stanislas | 18-11-1904 | 03-03-1947 | |
| Osmialowski, Leon Boleslaw | 11-04-1916 | 31-08-1943 | |
| Ossowski, Konrad | | 03-11-1944 | |
| Ostojski, Tadeusz | 16-05-1919 | 25-09-1944 | |
 | Ostrowski, Stanislaw | 29-10-1892 | 22-11-1982 |     more |
| Ostrowski, Tadeusz | | 00-09-1939 | |
| Osuchowski, Zbigniew Zygmunt | 22-01-1909 | 14-10-1944 | more |
| Oszwa, Marian | | 29-11-1943 | |
| Oyrzanowski, Waclaw | 18-09-1903 | 27-06-1943 | |
| Ozegowski, Andrzej | | | |
 | Ozga, Jan Franciszek | 30-08-1919 | 27-08-1944 | |
| Ozyra, Piotr | 11-05-1912 | 29-04-1942 | |
