Studied art at École Nationale Supérieure des Beaux-Arts (National School of the Fine Arts) Paris and worked in the studio of the painter Eugène Narbonne. Among his classmates were Maurice Boitel and Louis Vuillermoz. Sustained by the picture-dealer Maurice Garnier, Buffet produced religious pieces, landscapes, portraits and still-lifes. In 1946, he had his first painting shown, a self-portrait, at the Salon des Moins de Trente Ans at the Galerie Beaux-Arts. He had at least one major exhibition every year. Buffet illustrated "Les Chants de Maldoror" written by Comte de Lautréamont in 1952. In 1955, he was awarded the first prize by the magazine Connaissance des arts, which named the 10 best post-war artists. In 1958, at the age of 30, the first retrospective of his work was held at the Galerie Charpentier. On November 23, 1973, the Bernard Buffet Museum was founded by Kiichiro Okano, in Surugadaira, Japan. At the request of the French postal administration in 1978, he designed a stamp depicting the Institut et le Pont des Arts - on this occasion the Post Museum arranged a retrospective of his works. Buffet created more than 8,000 paintings and many prints as well. Buffet committed suicide at his home in Tourtour, southern France, on October 4, 1999. He was suffering from Parkinson's disease and was no longer able to work.
The gallery maintains a turning stock of quality lithographs, artists posters and prints along with drawings, original paintings and sculpture.