Stade Yves Allainmat-Le Moustoir

The Stade Yves Allainmat-Le Moustoir opened in July 1959 on municipal land. The name comes from a former mayor, Yves Allainmat, who died in 1993.

What keeps the surface playing is the AirFibr hybrid grass, installed in 2016. The west stand was rebuilt in 1998, the east in 2010, and the south closed for safety from 2017 to 2020.

On December 20, 2020, a lighting ramp fell on a volunteer groundsman following a match against Rennes. The stadium was renamed in 1993, long before that day. The game went on.

The Festival Interceltique de Lorient takes over the pitch, and the stands fill with pipers in kilts and drummers in vests.

The capacity is 18,110. The all-time record is 19,500, set during a Ligue 1 match against Marseille in 1999–2000. Another figure, 18,970, stands for a Coupe de France tie between SC Locminé and Paris Saint-Germain in 2012.

A modernization project, estimated at €41.5 million, was announced in 2023. Construction is planned for 2026. The stands still bear the sponsors: Crédit Mutuel de Bretagne and B&B Hotels.