Grand Prix du Morbihan is a single-day men's road bicycle race held annually in May around Plumelec, in the region of Brittany, France.

[1] Since 2020, the race is organised as a 1.Pro event on the UCI ProSeries, also being part of the French Road Cycling Cup.

[2] A women's race, the Grand Prix du Morbihan Féminin, has been held the same day since 2011.

[3]