Tawaraya Sōtatsu was a Japanese furniture designer and painter of the Rinpa school.
Sōtatsu is best known for his decorations of calligraphic works by his partner Hon'ami Kōetsu, and his spectacular and highly influential byōbu folding screens, such as National Treasures Wind God and Thunder God and his painting of the Sekiya and Miotsukushi chapters from The Tale of Genji. He also popularized a technique called tarashikomi, in which a second layer of paint is applied before the first layer is dry.
He is also credited with co-founding the Rinpa school of Japanese painting, together with Kōetsu. Rinpa was not strictly a school, but a group of artist directly influenced by Sōtatsu and Kōetsu. Some of the most notable Rinpa artists are Ogata Kōrin, Ogata Kenzan and Sakai Hōitsu.