Zhōu Shènzhāi 周慎齋 (proper name Zhōu Zhīgān 周之干; c. 1508–1586) was the principal late-Míng systematiser of the 李杲 Lǐ Dōngyuán bǔtǔ (補土) spleen-stomach tradition in his Sūzhōu medical circle and the teacher of 胡慎柔 Hú Shènróu (KR3eh037).