Khedrup Gelek Pelzang, 1st Panchen Lama in the context of Manjusri

The Gelug (/ɡəˈluːɡ/, also Geluk; lit. 'virtuous') is the youngest of the four major schools of Tibetan Buddhism. It was founded by Je Tsongkhapa (1357–1419), a Tibetan philosopher, tantric yogi and lama and further expanded and developed by his disciples (such as Khedrup Je, Gyaltsap Je, Dulzin Drakpa Gyaltsen, and Gendün Drubpa).

The Gelug school is alternatively known as Kadam (bKa’-gdams gsar-pa), since it sees itself as a continuation of the Kadam tradition of Atisha (c. 11th century). The school of New Kadam, or New Kadampa is an offshoot of the Gelug-tradition. Furthermore, it is also called the Ganden school, after the first monastery established by Tsongkhapa. The Ganden Tripa ("Ganden Throne Holder") is the official head of the school, though its most influential political figure is the Dalai Lama ("Ocean Teacher"). Allying themselves with the Mongol Khans, the Gelug school emerged as the dominant Buddhist school in Tibet and Mongolia since the end of the 16th century (religiously and politically). Another alternative name for this tradition is the Yellow Hat school or sect.

The Panchen Lama (Tibetan: པཎ་ཆེན་བླ་མ།, Wylie: paN chen bla ma) is a tulku of the Gelug school of Tibetan Buddhism. The Panchen Lama is one of the most important figures in the Gelug tradition, with its spiritual authority second only to the Dalai Lama. Along with the council of high lamas, he is in charge of seeking out the next Dalai Lama. Panchen is a portmanteau of Pandita and Chenpo, meaning "great scholar".

The recognition of Panchen Lamas began with Lobsang Chökyi Gyaltsen, tutor of the 5th Dalai Lama, who received the title "Panchen Bogd" from Altan Khan and the Dalai Lama in 1645. Bogd is Mongolian, meaning "holy". Khedrup Gelek Pelzang, Sönam Choklang and Ensapa Lobsang Döndrup were subsequently recognized as the first to third Panchen Lamas posthumously.