Lochen Rinchen Zangpo, also known as Mahaguru, was a principal lotsawa or translator of Sanskrit Buddhist texts into Tibetan during the second diffusion of Buddhism in Tibet, variously called the New Translation School, New Mantra School or New Tantra Tradition School. He was a student of the famous Indian master, Atisha. His associates included (Locheng) Legpai Sherab. Zangpo's disciple Guge Kyithangpa Yeshepal wrote Zangpo's biography. He is said to have built over one hundred monasteries in Western Tibet, including the famous Tabo Monastery in Spiti, Himachal Pradesh, Poo in Kinnaur and Rinchenling monastery in Nepal.