Satomu Shimizu (清水 三十六, Shimizu Satomu, June 22, 1903 – February 14, 1967), better known by the pen name of Shūgorō Yamamoto (山本 周五郎, Yamamoto Shūgorō), was a Japanese novelist and short-story writer active during the Shōwa period of Japan.

Lack of money forced him to drop out of secondary school, but he continued his education part-time, while living as a boarder above a used bookstore.

His preference for historically themed writings carried over into the postwar era, with Momi no ki wa nokotta (The Fir Trees Remain) and the Flower Mat.

His works are characterized by a marked sympathy for the underdog, a dislike of authority, and with homage to traditional, popular virtues.

His Nihon fudōki (Lives of Great Japanese Women) was nominated for the 17th Naoki Award, one of Japan’s most prestigious literary prizes, but Shūgorō refused to accept, stating modestly that his “popular writings” should not be considered “literature”.