Yann Goulet (or Yann Renard-Goulet; 20 August 1914 – 22 August 1999) was a sculptor, Breton nationalist and war-time collaborationist with Nazi Germany who headed the Breton Bagadou Stourm militia. He later took Irish citizenship and became professor of sculpture at the Royal Hibernian Academy.
Goulet was born in Saint-Nazaire. Before World War II, he was a member of the Breton National Party, and a former member of the French Section of the Workers' International (SFIO). His artistic career began at the École nationale supérieure des Beaux-Arts, where he studied art and architecture, and learned sculpture with Auguste Rodin's assistant, Charles Despiau. His works in France include bas-reliefs shown at the Exposition International de Paris (1938), and the monument to the youth of the French empire in Lille (1939). He was part of the Breton artistic movement Seiz Breur.
Goulet's involvement in Breton nationalism led to accusations that he had orchestrated the destruction the Monument to the Breton-Angevin Federation at Pontivy on 18 December 1938 by Gwenn ha du, the nationalist terrorist group. He was detained, but then released.
In 1939, he was sent to Strasbourg to study the art of sabotage. He participated in the beginning of World War II fighting for France, and was captured by the Germans on 11 June 1940 while blowing up a bridge on the Aisne with friends from a French corps.
Later in the war, he joined the assault section of Bagadou Stourm, Breton nationalist stormtroopers allied to the Germans. He also collaborated with the pro-Nazi nationalist newspaper L'Heure Bretonne. In 1941 in Paris, he became head of Bagadou Stourm and the "Youth Organizations" of the Parti National Breton. The promotion of Bagadou Stourm officers was named "Patrick Pearse" to commemorate the 25th anniversary of the 1916 Easter Rising against British rule in Ireland.