Ryōhen 良遍 (1194–1252) — Early- to mid-Kamakura Japanese Hossō 法相 (Yogācāra) scholar of Kōfuku-ji 興福寺 in Nara, and one of the most important medieval Japanese Yogācāra systematisers of the second generation after Jōkei 貞慶. His religious name Ren’a 蓮阿 (“Lotus-A”) indicates a parallel involvement in Pure Land devotion alongside his Hossō scholarship — a typical Kamakura-era doctrinal synthesis. He is sometimes called the Hossō Ryōhen to distinguish him from the contemporary Tendai monk of the same name.
Ryōhen’s principal canonical legacy is a tightly-integrated Hossō trilogy preserved together in the Shoshūbu of the Taishō:
- KR6t0008 Guānxīn juémèng chāo 觀心覺夢鈔 (T71n2312), 3 fasc. — the most coherent surviving medieval-Japanese Hossō summa designed for practical (rather than disputational) purposes; structured around ten major Yogācāra topics.
- KR6t0009 Zhēnxīn yàojué 眞心要決 (T71n2313), 3 fasc. — a contemplative doctrinal manual organised around the three-natures / three-non-natures (sānxìng / sān wúxìng) doctrine; includes a closing post-script with rare medieval Japanese Hossō reference to an early Rinzai-Song Chan master.
- KR6t0010 Èrjuàn chāo 二卷鈔 (T71n2314), 2 fasc. — a kana-mixed Japanese vernacular Yogācāra primer, and one of the most important early-Kamakura vernacular Buddhist texts.
His DILA Buddhist Person Authority entry (A000541; Wikidata Q11614433) is brief but confirms his identity and the canonical attribution of the trilogy. The reference work Nihon bukkyō jinmei jiten 日本仏教人名辞典 (cited by DILA as 日佛: 109:39) supplies his dates. Mochizuki, Bukkyō daijiten, s.v. Ryōhen 良遍, is the standard Japanese reference.
Ryōhen’s Hossō trilogy was the principal pedagogical-systematic corpus of Japanese Hossō from the late 13th century through the Edo period, surviving the Sengoku disruption via single-line manuscript transmission at the Kanshūbō (recorded in a Bunmei 2 [1470] colophon to Kanjin kakumu shō KR6t0008) and re-entering the printed canon through the Edo-period 1793 Tenju 典壽 reprint.