Muin Kinryū 無隱金龍 (mid-18th century, fl. c. 1740s–1770s), Edo-period Japanese Sōtō-Zen master and scholar-monk in the Manzan-school scholastic line. Style-name (字) Muin 無隱 (“Without-Hiding”); dharma-name Kinryū 金龍 (“Golden-Dragon”). The author of the Shingaku tenron 心學典論 (“Canonical Treatise on Mind-Learning”, the present text KR6t0308), edited and prefaced by his disciple Esshū 越宗 with a long Sino-Japanese expository preface by Genkō 元皓.
Active in Saihi 西肥 (= Hizen 肥前 province in Kyushu, modern Saga / Nagasaki), to which his correspondence is addressed by Genkō. Kinryū’s Shingaku tenron is structurally modeled on Cao Pi’s 曹丕 (187–226) classical Chinese Diǎnlùn 典論 — the canonical Wei-dynasty literary treatise — with which Genkō’s preface compares it at length, identifying Kinryū’s adaptation as a fundamentally Buddhist counter-statement to the secular literary-classical model.
The work is divided into multiple chapters covering: zōngyuán 宗原 (lineage-source) — including the Huáyán xìngqǐ (nature-arising) and Tiāntái xìngjù (nature-inclusion) doctrines; dàshèng 大乘 (Mahāyāna) — covering precepts, samādhi, and wisdom; and additional sections that combine Cáodòng-school doctrine with general Mahāyāna scholastic exposition.
Beyond authorship of the Shingaku tenron, no firm biographical record of Muin Kinryū survives in standard Sōtō biographical reference works; his dates and lineage placement remain to be established.