Onésimo Sánchez González (born 14 August 1968), often known simply as Onésimo, is a Spanish retired footballer who played mainly as a winger, and the current manager of Celta de Vigo B. Onésimo was mainly associated with Real Valladolid throughout his career, serving the club as both a player and manager. He amassed La Liga totals of 221 matches and 21 goals over nine seasons, which included the 1989–90 campaign spent with Barcelona.