Kulayarāja Tantra

The Kulayarāja Tantra (Tibetan phonetically: Kunjed Gyalpo, Tibetan: ཀུན་བྱེད་རྒྱལ་པོའི་རྒྱུད་, Wylie: Kun-byed Rgyal-po'i Rgyud; English: "All-Creating King", or "Supreme Source") is a Buddhist Tantra in the Tibetan language and the principal Mind Series (Wylie: sems sde) text of the Dzogchen (Great Perfection) tradition of the Nyingma school. The Kunjed Gyalpo contains within it smaller Dzogchen texts (from the earlier 18 semde texts) such as the Cuckoo of Rigpa (Rig pa'i khu byug) which appears in the thirty first chapter, as such it appears to be a sort of compilation of earlier Dzogchen literature (which is now categorized as "semde").

The Kunjed Gyalpo is the main tantra of the early Great Perfection tradition during the "Era of Fragmentation" (9th–10th centuries) period. As such, it is a key source for the early teachings of Dzogchen, before the developments of the Tibetan renaissance period (11th -12th centuries) transformed Dzogchen into its later (and currently dominant) forms, mainly the Menngagde systems.

The Kunjed Gyalpo is framed as a teaching by the first Buddha, Samantabhadra to Vajrasattva. Samantabhadra is presented as the personification of bodhicitta, the Awakened Mind, the "mind of perfect purity" or "pure perfect presence". The colophon of the text mentions that it was explained by the Indian Śrī Siṃha and translated by Vairotsana.