With a surname or pseudonym starting with O.
Thornton Oakley (1881–1953)
Frans Wilhelm Odelmark (1849–1937)
Gunnar Odin (1926–1972)
Edvin Ollers (1888–1959)
Pierre Olofsson (1921–1996)
Axel Olson (1899–1986)
Bengt Olson (born 1930)
Erik Olson (1901–1986)
Ove Olson (1903–1975)
Arne Olsson (1908–2003)
Axel Olsson (1919–2001)
Karin Olsson (1928–2006)
Sören Olsson (1914–2002)
Wilgot Olsson (1906–1990)
Gunni Omann
Ulf Onsberg (born 1932)
Johnny Oppenheimer (1923–2005)
Leona Oppenheimer (born 1959)
Bengt Orup (1916–1996)
Johan Ossian-Andersson (1889–1975)
Helmer Osslund (1866–1938)
Elvine Osterman (1908–1997)
