Primary media Name Nationality Date
Media FileFrank O'NealAmericanAmerican cartoonist, 1921–1986
Rose Cecil O'NeillAmericanAmerican artist, cartoonist, and writer 1874–1944
Media FileFrederick Burr OpperAmericanAmerican cartoonist, 1857–1937
Media FileMarjorie OrganAmerican, born IrelandAmerican graphic artist and illustrator, 1886–1930, born Ireland
Media FileJosé Clemente OrozcoMexicanMexican muralist and draftsman, 1883–1949
Media FileAlfred Everitt OrrAmericanAmerican artist, 1886–1938?
Media FileNorman OrrAmericanAmerican artist and craftsman, born 1949
Media FileElizabeth OsborneAmericanAmerican painter, born 1936
Media FileMalcolm OsborneEnglishEnglish printmaker, 1880–1963
Media FileSean O'SullivanBritishIrish painter, 1906–1964