PAINTERS LIST CATEGORY O

* Leonard Ochtman, (1854-1935), U.S. painter
* Juan O'Gorman, (1905 - 1982), Mexican artist
* Georgia O'Keeffe, (1887-1986), U.S. painter
* Claes Oldenburg, (born 1929), sculptor
* J.H. Ferdinand Olivier, (died 1841), German painter
* John Opie (1761-1807)
* Andrea Orcagna, (1320-1368), artist
* William Quiller Orchardson (1835-1910)
* Bryan Organ (born 1935)
* Emil Orlik, (1870-1932), painter and graphic artist
* Aleksander Orlowski, Polish painter
* José Clemente Orozco, (1883-1949), Mexican artist
* Sir William Orpen (1878-1931)
* Manuel Ortiz de Zarate (1887-1946)
* Erik Ortvad, (born 1917)
* Adriaen van Ostade (1610-1685)
* Outamaro (c. 1750-1806)
* Johann Friedrich Overbeck (1789-1869)
* Auseklis Ozols, (born 1941)