Cluj Arena is a multi-purpose stadium in Cluj-Napoca, Romania. It serves as the home of Universitatea Cluj of the Liga I and was completed on 1 October 2011. It is also the home of the Untold Festival. The facility, owned by the county council of Cluj, can also be used for a variety of other activities such as track and field events and rugby union games. It replaced the Stadionul Ion Moina, which served as Universitatea Cluj's home from 1919 until the end of the 2007-08 season.

Asociația Sportivă Fotbal Club Universitatea Cluj, commonly known as Universitatea Cluj or simply as U Cluj, is a Romanian professional football club based in the city of Cluj-Napoca, Cluj County, that competes in the Liga I.