The University of Arkansas (U of A, UArk, or UA) is a public land-grant research university in Fayetteville, Arkansas, United States. It is the flagship campus of the University of Arkansas System. Founded as Arkansas Industrial University in 1871, classes were first held in 1872, with its present name adopted in 1899. The university campus consists of 378 buildings spread across 512 acres (2.07 km2) of land in Fayetteville, Arkansas. As of the fall of 2025, total enrollment was 34,175. The university is classified among "R1: Doctoral Universities – Very high research activity" and had spent $164.4 million on research in FY 2021.