Huìzhèn 惠振 (lifedates unknown), Tang-period Buddhist monk and Śūraṅgama-sūtra commentator, named among the predecessors whose work was synthesised by the Sòng Huáyán-Chán scholar 子璿 Chángshuǐ Zǐxuán (965–1038) in his canonical commentary on the Śūraṅgama. Cited by 來舟 Lái Zhōu in the preface to KR6b0009 Dàshèng běnshēng xīndìguān jīng qiǎnzhù xuánshì as one of the Tang masters whose strengths Zǐxuán drew upon. No biographical material survives.