União Desportiva de Leiria, commonly known as União de Leiria (pronounced: [uniˈɐ̃w̃ dɨ lɐjˈɾiɐ]), is a Portuguese football club based in Leiria, central Portugal. Founded on 6 June 1966, it currently plays in the third division, holding home matches at Estádio Dr. Magalhães Pessoa, with a 24,000-seat capacity.