The University of Louisiana at Lafayette (UL Lafayette, University of Louisiana, ULL, or UL) is a public research university in Lafayette, Louisiana. It has the largest enrollment within the nine-campus University of Louisiana System and the second-largest enrollment in Louisiana, behind only Louisiana State University. It is classified among "R1: Doctoral Universities – Very high research activity".

Founded in 1898 as an industrial school, the institution developed into a four-year university during the twentieth century and became known by its present name in 1999. It offers Louisiana's only Ph.D. in francophone studies, Louisiana's only master's of informatics, and Louisiana's only industrial design degree. The university has achieved several milestones in computer science, engineering and architecture. It is also home to a distinct College of the Arts.