Atsushi Matsubayashi is a Japanese painter. He mainly produces portraits in watercolor and oil paint. He studied painting at the Nihon University College of Art and has held several solo exhibitions in Tokyo, Osaka, Taiwan and Hong Kong. Atsushi Matsubayashi chairs a watercolor class in Shizuoka, Japan, and has published various books on the watercolor technique. He is a member of JWS (Japan Watercolor Society).