Toba Sōjō

Toba Sōjō (鳥羽僧正^?) (1053–1140), also known as Kakuyū (覚猷^?), was a Japanese astronomer, an artist-monk, and the son of Minamoto no Takakuni.

Although he is frequently credited as the artist of the famous picture scroll Chōjū-giga, there is no conclusive proof of this claim.