Huì Yīn 慧因 (fl. Sòng) was a Sòng-dynasty Buddhist scholar who composed the Fànwǎngjīng púsàjiè zhù 梵網經菩薩戒注 (KR6k0094) — a three-fascicle commentary on the Fànwǎng bodhisattva-precepts. The work is part of the Sòng-period revival of Vinaya scholarship that included Yuánzhào’s recovery of the Nánshān tradition.