S.U. 1º de Dezembro

The Sociedade União 1 º Dezembro is a football club based in the Portuguese town of Sintra. It was founded in 1880.

The men's team in 2011 rose in the II ª Divisão, the third Portuguese league, where she competes in the group since Sul.

The women's team is a Portuguese record holder. The first title was won in 2000, after a year then pass 2002-2012 eleven consecutive titles in the Campeonato Nacional.

Play their home games, the club from the Campo de Conde Sucena.