Associação Desportiva Ovarense commonly known as simply as Ovarense is a Portuguese sports club from the city of Ovar, Aveiro. The club was founded on 19 December 1921. It currently plays at the Estádio Marques da Silva which they have played in since 1954. The stadium also plays host to the club's reserve and youth teams. As a club it is well known for its basketball team who have won nineteen major trophies since their establishment in 1970. The club currently competes in the AF Aveiro Second Division following a seventh-place finish in the 2011–12 AF Aveiro Second Division season.
Ovarense was one of the founding members of the Aveiro Football Association along with Anadia, Beira-Mar, Bustelo, Clube dos Galitos, Espinho, Fogueirese, Paços Brandão, Sanjoanense, SC Oliveirense, Sociedade Recreio Artístico and UD Oliveirense. The association was founded on 22 September 1924. The club has played on various occasions in the Liga de Honra, Segunda Divisão and the Terceira Divisão. Their most recent Liga de Honra appearance came in the 2005–06 Liga de Honra season. Shortly after, serious financial problems led to the team's demotion to the fifth level of national football.