
União Desportiva Oliveirense, commonly known as simply as Oliveirense, is a Portuguese sports club from the city of Oliveira de Azeméis, Aveiro. The club was founded on 25 October 1922.
Estádio Carlos Osório is a stadium in Oliveira de Azeméis, Aveiro, Portugal. It is currently used for football matches and is the home ground of Liga de Honra side U.D. Oliveirense. The ground holds a seating capacity of 4000. The stadium is named after a local villager called Carlos Osório who gave permission to the club to construct the stadium on his piece of land.