James Bouillé (February 14, 1894 – June 22, 1945) was a French architect based in Brittany.
Bouillé was born in Guingamp (Côtes-d'Armor) He studied at the École des Beaux-Arts in Paris, until he was mobilized after the outbreak of the First World War in 1914. After the war, he became a member of the Breton nationalist political movement Breiz Atao.
He was one of the founders in 1923 of the artistic movement Seiz Breur, along with Jeanne Malivel and René-Yves Creston. His aim was to revitalise Breton sacred art: crosses, votive objects and traditional crafts. He also designed and supported pottery, ceramics, embroidery and cabinetmaking. Between 1924 and 1935, he was an architect in Perros-Guirec, where he developed a successful practice building holiday villas.
In 1929 he joined with Xavier de Langlais to found An Droellen, a workshop of Breton Christian art. The duo worked closely together on a number of projects, including the college chapel of St. Joseph in Lannion. The workshop included among its members Mlle Ménard (glazier), Madame Planiol (restoration of priestly vestments) and Jules-Charles Le Bozec (sculptor).
In the late 1930s Bouillé created the Chapel of Koat-Keo in Scrignac (Finistère), built at the initiative of his friend Abbot Jean-Marie Perrot, founder of the Breton Catholic youth organization Bleun-Brug, which promoted traditional Breton culture. The chapel is seen as a significant attempt to create a distinctive modern Breton sacred architecture.
During the World War II, Perrot and Breun-Blug were suspected of collaborationist activity. In 1941, Bouillé was made director of Bleun-Brug and sat on the Advisory Committee of Brittany, as its representative. The Committee was seen by resistance activists as part of the collaborationist régime. At this time he advocated a radical plan to build a new Breton capital city to be called "Brittia", which would be a "Celtic Brasilia" on the shores of Lake Guerlédan. Due to his association with Perrot and the committee, he was interned after the Liberation of France. He died in 1945, as a result of his internment.