Jagadguru

Jagadguru (Sanskrit जगद्गुरु), literally meaning the Guru of the world, is a title used in Sanatana Dharma. Traditionally, it has been bestowed upon or used for acharyas belonging to the Vedānta school (among the six traditional schools of thought in Hinduism) who have written Sanskrit commentaries on the Prasthānatrayī (literally the three sources) - the Brahma Sutra (the original scripture of Vedānta), the Bhagavad Gita (part of the Mahābhārata) and the principal Upanishads. Historically, Jagadgurus have established a lineage (Paramparā), established an institution to spread Dharma, who have been based in Varanasi, famous for being the centre of Sanskrit study and the "Capital Of all Knowledge". Now it is the authority of Kashi Vidvat Parishad to confer the title of Original Jagadguru.

Read more about Jagadguru:  Origin and History of The Term, Notable Jagadgurus