Geppa Dōin 月坡道印 (Kan’ei 12 → 1635; Kyōhō 1 / 1716), Edo-period Japanese Sōtō-Zen master and one of the principal figures of the late-17th-century Sōtō fukko (return-to-the-ancient) recovery movement. Style-name (字) Geppa 月坡 (“Moon-Slope”); dharma-name Dōin 道印.
Successively abbot of:
- Kōryū-zan Daiyō-kaku 黄龍山大用閣 in Kaga (his principal early abbacy from 1670; the kōryūjū (“Yellow-Dragon-Reverend” — Kōryū wajō 黄龍和尚) appellation derives from this), where he carried out his great Sōji-ji-line yulu recovery campaign;
- and later Mount Daizu-zan Tendō-ji 岱宗山天徳禪寺 in Hitachi 常陸 province (modern Ibaraki), founded under the patronage of Tokugawa Mitsukuni 徳川光圀 (1628–1700), the Mito daimyo, who appears in Geppa’s yulu as the Mito-kō Sangi Genkun 水戸侯参議源君.
Geppa is best known as the editor-publisher of foundational Sōji-ji-line yulu — recovering manuscripts long lost or half-decayed and producing the first printed editions:
- KR6t0298 Tsugen Reizenji manroku (Enpō 3 / 1675) — the recorded sayings of Tsūgen Jakurei.
- KR6t0299 Jippō Zenji goroku (Enpō 3 / 1675) — the recorded sayings of Jippō Ryōshū.
Both were edited from “half-rotted-by-rain” manuscripts in the same year, at his Daiyō-kaku abbacy, and represent the first systematic publication of the fourth-generation Sōji-ji-line yulu of 峨山 Gasan Jōseki’s goteki.
His own recorded sayings, the Geppa Zenji goroku 月坡禪師語録 (KR6t0301), preserve his Tendō-ji abbacy under the patronage of Tokugawa Mitsukuni — one of the few Edo-Sōtō yulu with explicit Mito-school connections, since Mitsukuni was the great Mito Confucian-historiographer (sponsor of the Dai Nihon shi 大日本史 project) who also patronised Sōtō scholarship.