French artist who was a Postimpressionist painter and theorist.

Originally a student of philosophy, Sérusier decided to become an artist and attended the Académie Julian (1886) in his native Paris. He painted with Paul Gauguin in Brittany at Pont-Aven (1888) and at Le Pouldu (1889–90), and in the 1890s he was associated with the Nabis—many of whom he had known at the Académie Julian—especially as the movement's theorist. After visiting (1897, 1903) the school of religious art at the Benedictine abbey of Beuron in Germany, Sérusier became deeply influenced by their concepts of religious symbolism and sacred proportions. Retiring to Brittany in 1914, he became known as a mystic and his work in this period as a theorist is usually regarded as more important than his paintings. In his earlier works depicting the peasants of Brittany, he achieved a muted, contemplative mood by using firm contours and blocks of unmodulated colour.