Paul Shinji Sasaki (佐々木パウロ、March 11, 1885–1946) was an Anglican Bishop of the Diocese of Mid-Japan, in the Nippon Sei Ko Kai, the Province of the Anglican Communion in Japan. Sasaki studied at the Kelham house of the Society of the Sacred Mission and at Westcott House, Cambridge, England. He was ordained deacon on December 21, 1912 and priest on April 25, 1917, by the Right Reverend Cecil Henry Boutflower, Bishop of South Tokyo. He served as first primate of the Nippon Sei Ko Kai. Sasaki was consecrated on July 25, 1935 in Nagoya as the first Japanese diocesan bishop in a region formerly served by the missionary work of the Anglican Church of Canada. He succeeded James Heber Hamilton.
Sasaki also worked as Professor of Liturgics and Applied Theology at Central Theological College, Tokyo.
He is commemorated on the Calendar of saints (Anglican Church of Canada) and the Calendar of saints (Episcopal Church in the United States of America).