Michel Graillier (18 October 1946, Lens, Pas-de-Calais, France – 11 February 2003, Paris) was a French jazz pianist.
From the ages of four to eighteen, Graillier studied classical piano in Lens, France. During adolescence, he worked as a drummer with the amateur yéyé group, Les Chaps ("The Guys").After some preparatory classes, he enrolled in the engineering school at the ISEN in Lille, where he met the bassist Didier Levallet through whom he discovered jazz. In 1968, with a diploma in electrical engineering, he moved to Paris. He played in clubs, most notably at the Caméléon, in a trio with Aldo Romano and Jean-François Jenny-Clark. He made his first recording in 1969 with Steve Lacy. For three years, he accompanied violinist Jean-Luc Ponty. His first album for Agartha Records appeared in 1970, on which he was accompanied by Alby Cullaz and Bernard Lubat. During the same he year, he recorded Pianos Puzzle with Georges Arvanitas, René Urtreger, and Maurice Vander. Due to personal problems, he withdrew from performing for a period of time.