União Desportiva Oliveirense is a sports club from Oliveira de Azeméis, Portugal. The club was founded in 25 October 1922, and fields sports teams in football, rink hockey and basketball. Its rink hockey and basketball teams have been playing in the top Portuguese division for several years and are among the most powerful in Portugal. Its football team plays in the Liga Vitalis (second level in Portuguese football) in 2008-09 season. The rink hockey team finished in 5th in 2005-06 season of the Portuguese Rink Hockey Championship.
The club has a single presence at the top level of Portuguese football.