Oleguer Presas Renom (born 2 February 1980), known simply as Oleguer, is a Spanish retired footballer.
Primarily a central defender, he could also operate as a defensive right back.
During his career he was mostly associated to Barcelona, with which he won two La Liga championships and the 2006 Champions League, appearing in 175 official games.
Oleguer signed for Ajax in 2008, where he remained until his retirement.
He was also known for his politics: he supported left-wing causes and Catalan nationalism, which caused some controversy and led to one sponsor dropping him.