Omiccioli, Nicholas S.(1982 - ) USA
Omura, Kumiko(1970 - ) Japan
Oña, Erik(1961 - ) Argentina
Önder, Ayse(1973 - ) Turkey
Onna, Peter van(1966 - ) The Netherlands
Ono, Tadasuke(? - ) Japan
Ono, Takashi(1971 - ) Japan
Oomen, Paul(1982 - ) The Netherlands
Oorebeek, Christina Viola(1944 - ) The Netherlands
Oosten, Roel van(1958 - ) The Netherlands
Oosterveld, Ernst(1951 - ) The Netherlands
Oostrom, Tom van(? - ) USA
Opalka, Tomasz Jakub(1983 - ) Poland
Opatril, Leslie(? - ) Canada
Opazo Muñoz, Mauricio(1969 - ) Spain
Opitz, Bernhard(1967 - ) Germany
Opitz, Erich(1912 - 2001) Austria
Oppedisano, Marco(1971 - ) USA
Oppo, Franco(1935 - 2016) Italy
Oram, Celeste(1990 - ) New Zealand
Orbán, György(1947 - ) Hungary
Orbón, Julián(1925 - 1991) Cuba
Ordway, Scott J.(1984 - ) USA
Ore, Østen Mikal(1967 - ) Denmark
Orea, René(1976 - ) Canada
Orekhov, Sergei(1935 - 1998) Russia
Orenstein, Joyce E.(1939 - ) USA
Orfe, John(? - ) USA