Oscar Castro

Oscar Castro may refer to:


 * Óscar Castro Zúñiga (1910–1947), Chilean poet
 * Oscar Castro (chess player) (1953–2015), Colombian chess master
 * Óscar Castro Ramírez (1947–2021), Chilean playwright, actor and director
 * Oscar Castro-Neves (1940–2013), Brazilian guitarist
 * Oscar Padula Castro (born 1993), Uruguayan footballer