The 2020 BYU vs. Coastal Carolina football game, popularly known as Mormons vs. Mullets, was a regular-season college football game played on December 5, 2020, at Brooks Stadium in Conway, South Carolina. The matchup, played as a part of the 2020 FBS football season, featured the BYU Cougars, an FBS independent, and Coastal Carolina Chanticleers, representing the Sun Belt Conference. Both teams entered the game ranked, with BYU at No. 13 and Coastal Carolina at No. 18 in the College Football Playoff rankings, and undefeated, both at nine wins and no losses. The game was scheduled as a 5:30 p.m. ET kickoff broadcast on ESPNU.