Zhū Jūnxù 朱君緒 (zì 法滿 Fǎmǎn, d. c. 720) was a Daoist priest of the early Táng with the title Sāndòng dàoshì 三洞道士 (“Daoist of the Three Caverns”). He is principally known as the compiler of the Yàoxiū kēyí jièlǜ chāo 要修科儀戒律鈔 (KR5b0147), the great encyclopaedia of Daoist ritual prescription and precept law of the early Táng, in sixteen juàn. The work is a critical witness to a wide range of now-lost Six Dynasties Daoist liturgical sources, which it cites verbatim under their titles. The colophon to juàn 1 reads 三洞道士朱法滿撰, “compiled by the Three-Cavern Daoist Zhū Fǎmǎn.” The dating to the early 8th century (c. 700–720) is established by internal references to the Táng kāiyuán reforms and by citations in early-9th-century Daoist literature, notably the Sāndòng zhūnáng 三洞珠囊 of Wáng Xuánhé 王懸河. CBDB has no entry. The figure is sometimes confused with the contemporary Buddhist Zhū Jūnxù of the Chánzōng tradition; the two should not be conflated.
Schipper & Verellen, Taoist Canon 1: 442–443; Yamada Toshiaki 山田利明 in Hattori Unokichi sensei kiju kinen rombunshū (Tōkyō: Yamaguchi shoten, 1979); see also the entry for the Yàoxiū kēyí jièlǜ chāo.