Ersan İlyasova (born May 15, 1987) is a Turkish professional basketball player for the Milwaukee Bucks of the National Basketball Association (NBA). He has previously played in Turkey, Spain and the NBA Development League.
After playing for Yeşilyurt in the Turkish second division league during the 2003–04 season, İlyasova stepped up to the Turkish Basketball League for the 2004–05 season with Ülkerspor, averaging 4.5 points and 3.2 rebounds in eleven games.
İlyasova was selected by the Milwaukee Bucks with the 36th overall pick of the 2005 NBA draft. In July 2005, he joined the Bucks for the 2005 NBA Summer League. On August 22, 2005, he signed with the Bucks. On November 14, 2005, he was assigned to the Tulsa 66ers of the NBA Development League, an assignment that lasted the entire 2005–06 season. In 46 games for the 66ers, he averaged 12.5 points, 7.0 rebounds and 1.0 assists per game.