US Concarneau (French: Union Sportive Concarnoise) is a French football club based in Concarneau (Finistère). It was founded in 1911. They play at the Stade Guy Piriou, named in honour of the former club president, which has a capacity of 7,000. The colours of the club are red and blue.As of the 2012–13 season the club plays in the Championnat de France amateur Group D.