Haribhadra, also known as Shizi Xian (simplified Chinese: 狮子贤; traditional Chinese: 獅子賢; pinyin: Shīzixián) or Sengge Zangpo (Tibetan: སེང་གེ་བཟང་པོ་, Wylie: seng-ge bzang-po; both names mean "righteous lion") was an 8th-century CE Buddhist philosopher, and a disciple of Śāntarakṣita, an early Indian Buddhist missionary to Tibet. He was one of the founding monks of the Vikramashila monastery.^[1] Haribhadra's commentary on the Abhisamayalankara was one of the most influential of the twenty-one Indian commentaries on that text, perhaps because of its author's status as Shantarakshita's student. Like his master, Haribhadra is retrospectively considered by Tibetan doxographical tradition to represent the Yogācāra-Svatantrika-Mādhyamaka school.

Haribhadra's interpretation of the Abhisamayalankara, particularly his four-kaya model, was controversial and contradicted the earlier normative interpretation popularized by Vimuktasena. Haribhadra claims, that Abhisamayalamkara chapter 8 is describing Buddhahood through four kayas: svabhavikakaya, [jnana]dharmakaya, sambhogakaya and nirmanakaya.^[2] Haribhadra's position was in turn challenged by Ratnākaraśānti and Abhayakaragupta. In Tibet the debate continued, with Je Tsongkhapa championing Haribhadra's position and Gorampa of the Sakya school promoting the other.^[3]