Ralph Engelstad Arena (REA), commonly called the Ralph, is an indoor arena located on the campus of the University of North Dakota (UND) in Grand Forks, North Dakota and serves as the home of UND men's ice hockey. The arena was built by controversial UND alumnus Ralph Engelstad. The North Dakota Fighting Hawks men's hockey team is the tenant. The arena formerly hosted the defunct North Dakota women's hockey team.

The University of North Dakota is a public research university in Grand Forks, North Dakota. It was established by the Dakota Territorial Assembly in 1883, six years before the establishment of the state of North Dakota.