rGyal-tshab Dar-ma rin-chen 傑操達瑪仁欽 (1364–1432), commonly known by the honorific title rGyal-tshab Je 傑操傑 (“the Lord-Regent”), was the chief disciple and dharma-heir of Tsongkhapa Lobsang Drakpa (1357–1419), the founder of the dGe-lugs-pa (Yellow-Hat) school of Tibetan Buddhism. After Tsongkhapa’s death in 1419 he succeeded him as the second throne-holder (dga’-ldan khri-pa) of Ganden monastery — hence “rGyal-tshab” “regent.” Together with Khedrup-je 克主傑 (1385–1438), the third throne-holder, he is known as one of the rJe-yab-sras gsum “the Three Father-and-Son Lords” (Tsongkhapa = father, Gyaltsab and Khedrup = sons). His writings, collected in nine volumes of the bKa’-‘bum, include sub-commentaries on Tsongkhapa’s principal works plus extensive commentaries on Indian Mahāyāna treatises — including the Bodhicaryāvatāra-pañjikā on Śāntideva’s Bodhicaryāvatāra, translated into Chinese by Lóng-lián as KR6v0044 Rù púsà xíng lùn guǎngjiě.
Note: he should not be confused with the earlier rGyal-sras Thogs-med bzang-po (1295–1369), author of a different and earlier Bodhicaryāvatāra commentary (the rGyal-sras lag-len so-bdun-ma-related corpus).