Rizong Sras Rinpoche (7 June 1928 – 8 December 2022), spiritual name Thubten Nyima Lungtok Tenzin Norbu, was an Indian cleric from Ladakh who was the 102nd Ganden Tripa (spiritual head of the Gelug school of Tibetan Buddhism)[1][2] - finally titled as Ganden Trisur (which means "former-Ganden Tripa") Rizong Sras Rinpoche.

Rizong Rinpoche's mother, Tsering Lhazom, was from the aristocratic Leh Kalon family.

At the age of 20, Rizong Rinpoche received his full monk's ordination from the 94th sitting Ganden Tripa Khrichang Lhündrub Tsöndrü.

Rizong Rinpoche made the practice of meditation and tantra his principal focus in life and conducted numerous extensive tantric retreats, including a three-year tantric retreat on the Yamantaka mandala in a hermitage in Ladakh so remote it was only accessible for about 3 months out of the year due to the heavy snows.

Rinpoche was renowned for his knowledge of tantra and tantric rituals, and was frequently called upon by the 14th Dalai Lama to lead tantric ceremonies for healing and other similar purposes such as the site purification rituals for the Kalachakra empowerment.