Ovar ( or ) is a city and a municipality in Aveiro District, Baixo Vouga Subregion in Portugal. The population in 2011 was 55,398, in an area of 147.70 km². It had 42,582 eligible voters (2006). The municipality includes two cities: Ovar (16,849 inhabitants in 2001) and Esmoriz (11,020 inhabitants in 2001).
The present Mayor is Manuel Alves Oliveira, elected by the Socialist Party. The municipal holiday is July 25.
Ovar is home to the football team A.D. Ovarense who play at the Estádio Marques da Silva.