Jippō Ryōshū 實峰良秀 (Bunpō 2 → 1318; Ōei 12 / 1405-08-24), Late-Nanbokuchō / early-Muromachi Japanese Sōtō-Zen master in the Sōji-ji-line, dharma-heir of 峨山 Gasan Jōseki 峨山韶碩 (1276–1366). Style-name (字) Jippō 實峰 (“True-Peak”); dharma-name Ryōshū 良秀. Native of Echizen 越前 province.
One of 峨山 Gasan’s Five Disciples (峨山五哲 Gasan no goteki) and the founder of the Jippō-ha 實峰派 sub-lineage of Sōji-ji. Successively abbot of multiple Sōji-ji-line foundations in the Hokuriku and Ōmi-Mino region, principal of which is recorded in his recorded sayings (KR6t0299) as the Yōshō abbacy. The preface to his recorded sayings by Geppa Dōin 月坡道印 (1675) identifies him as “a sixth-generation grandson-in-dharma of the Eihei old-Buddha (Dōgen) and the heir of the Gasan great (Gasan Jōseki); he turned upside-down the Soji-ji No-Character Seal, with form like an iron-ox machine in full play, and freely played the Shintō Boxwood Stringless Lute, with notes that taught wood-people to sing and dance.”
His recorded sayings, the Jippō Zenji goroku 實峰禪師語録 (KR6t0299), survived in manuscript half-rotted by rain in a kasaya-bag before being recovered, collated, and printed by Geppa Dōin alongside the Tsugen Reizenji manroku (KR6t0298) as part of his late-Edo Sōtō-Zen fukko recovery campaign. The Jippō-ha sub-line is one of the four principal Sōji-ji sub-lineages active through the Edo period.