Regal Entertainment Group, abbreviated REG, is an American movie theater chain headquartered in unincorporated Halls Crossroads, just north of Knoxville, Tennessee. Regal operates the largest and most geographically diverse theater circuit in the United States, consisting of 7,334 screens in 588 locations in 44 states along with Guam, Saipan, American Samoa, Grand Cayman, and the District of Columbia, as of September 2013.