- Orlowski, Stanislaw, born on 08.05.1910 in Grazewo, Polen
- Orman, Tadeusz, born on 08.10.1927
- Orobec, Iwan, born on 12.11.1923 in Zalucze, Polen
- Orobec, Piotr, born on 11.03.1919 in Zalucze, Polen
- Oropaj, Grigorij, born on 18.02.1903 in Popovka/Sumy, Ukraine
- Oros, Ferenz, born on 23.10.1929
- Orvieto, Angelo, born on 22.11.1915
- Ory, Georges, born on 07.04.1908 in Flémalle-Haute, Belgien
- Orywal, Friedrich, born on 09.08.1915 in Schonnebeck/Essen
- Orzech, Stanislaw, born on 12.03.1919 in Polen
- Orzechowski, Wladyslaw, born on 18.12.1904
- Oserow, Nikolaj, born on 25.02.1909 in Oterowo
- Osetschkin, Andrej, born on 28.09.1906 in Beklemishchevo, Russland
- Osintzew, Leonid, born on 01.12.1904 in Ural'sk
- Osipow, Iwan, born on 01.10.1922
- Osmialowski, Jan, born on 27.01.1895 in Stobnica/Piotrków, Polen
- Osnak, Ivan, born on 12.01.1919 in Cabar, Jugoslawien
- Ospuk, Tomas, born on . .1912
- Osset, Serge Marcel, born on 11.08.1923 in Jussy, Frankreich
- Ossola, Marius, born on 18.06.1921 in Coise, Frankreich
- Ossowski, Konrad, born on 18.11.1913 in Ossowo, Polen
- Ostafin, Josef, born on 03.03.1891
- Ostapuschtschenko, Michail, born on 25.11.1898 in Bokovoye, Ukraine
- Ostaschenkow, Fedor, born on 02.03.1920 in Arkhangel'sk, Russland
- Ostaschko, Grigorij, born on 27.10.1888 in Knyaz' Ivanovka, Ukraine