Hisashi Terao (寺尾 寿, Terao Hisashi) (1855-1923) was a Japanese astronomer and mathematician. He graduated from the Tokyo imperial University as well as from the University of Paris, and he was one of the founding members and the first principal of The Tokyo Academy of Physics (now Tokyo University of Science). Notable students that studied under him include Shin Hirayama, Hisashi Kimura, and Kiyotsugu Hirayama. He is also called one of the first astronomers of the Meiji era.
Source: “Hisashi Terao”, English Wikipedia (CC BY-SA 4.0), excerpt