The 2021 CONCACAF Nations League Finals was an international football tournament held in the United States from 3 to 6 June 2021. The four national teams involved in the tournament were required to register a squad of 23 players, including three goalkeepers, by 27 May 2021, seven days prior to the opening match of the tournament. Only players in these squads were eligible to take part in the tournament. After the official announcement, changes were only allowed in case of force majeure or injury, up to 24 hours before the first match of each team.