Jaunpur (jounpŏrˈ) [key], city (1991 pop. 136,062), Uttar Pradesh state, NE India, on the Gomati River. Now a district administrative center and market town where perfume is made, Jaunpur was in the 15th cent. a brilliant center of Muslim learning and architecture. Of the many buildings from this period the great Atala Devi Masjid mosque (completed 1408) is the most notable.