Oser, Martin(1955 - )
Osman, Ali(1958 - ) Sudan
Osmun, Douglas(? - ) USA
Osorio, Daniel(1971 - ) Chile
Ospald, Klaus(1956 - ) Germany
Ossowski, Michal(1984 - ) Poland
Ostarek, Hans(? - )
Ostendorf, Jens-Peter(1944 - 2006) Germany
Osterfield, Paul(? - ) USA
Österling, Fredrik(1966 - ) Sweden
Ostermeier, Thorben(1977 - ) Germany
Otai, Tsuyoshi(1932 - ) Japan
Oteri, Frank J.(1964 - ) USA
Otero, Francisco(1940 - ) Spain
Otero Moreira, Ramón(1982 - ) Spain
Otondo, Felipe(1972 - ) Chile
Otsa, Harri(1926 - 2001) Estonia
Ott, Daniel(1960 - ) Switzerland
Ott, Joseph(1929 - 1990) USA
Otte, Andreas(1967 - ) Germany
Otte, Erik(? - ) The Netherlands
Otte, Hans(1926 - 2007) Germany
Ouellette, Antoine(1960 - ) Canada
Ouper, Jeffrey(? - ) USA
Ourkouzounov, Atanas(1970 - ) Bulgaria
Ovejero, Osvaldo Antonio(1960 - ) Austria
Overton, Hall(1920 - 1972) USA
Ovsepyan, Petros(1966 - ) Azerbaijan