Shūkaku-Jiki 宗覺直 (full name; the catalog meta abbreviates to 宗覺 Shūkaku) was a late 17th-century Japanese Shingon-Vinaya (Shingon-Risshū 真言律宗) monk at the Kushū-on Vinaya Cloister 久修園律院 in Kyoto, the temple founded by Jōgon 淨嚴 (1639–1702) in 1678 as the institutional centre of the Edo-period Shingon-Risshū revival. The preface colophon of his work KR6t0058 Dà-shèng yuán-jiè xiǎn-zhèng lùn identifies him as “Kushū-on Ritsu-in bhikṣu 宗覺直” and dates the work to Jōkyō 1 = 1684 CE; the cover-line identifies him as a “Bhikṣu of the Capital (京師)“.
He is presumably a pupil or contemporary of Jōgon, working within the institutional structure of the Edo-Shingon-Risshū. His one surviving canonical work — KR6t0058 Dà-shèng yuán-jiè xiǎn-zhèng lùn — is a five-chapter polemical defence of the joint observance of the Brahmajāla bodhisattva-precepts and the Sì-fēn-lǜ prātimokṣa, directed (without naming) against the contemporary Anraku-in Tendai yuán-jiè school of Reikū Kōken 靈空光謙 (1652–1739) which had begun to argue, around the 1680s, that the yuán-jiè alone sufficed and that the Sì-fēn-lǜ could be dispensed with in the mò-fǎ age.
No CBDB record. No DILA Authority record currently locates this Shūkaku-Jiki uniquely.