The 2020 CONCACAF Men's Olympic Qualifying Championship was an international football tournament that was held in Mexico from 18 to 30 March 2021. The eight national teams involved in the tournament were required to register a squad of twenty players, three of whom had to be goalkeepers.^[1]

Each national team had to submit a provisional list with up to fifty players to FIFA and CONCACAF at least thirty days before their first match in the tournament.^[1] The final list of twenty players per national team had to be submitted to FIFA and CONCACAF up to ten days before the start of the tournament. Once the final lists had been submitted, teams were only permitted to make replacements in cases of force majeure or serious injuries up to 24 hours before their first match, where the replacement players needed to be in the preliminary squad.^[2]

The provisional lists were published by CONCACAF on 23 February 2021.^[2][3] The final lists were published by CONCACAF on 11 March 2021.^[4][5]

All registered players had to have been born on or after 1 January 1997 (Regulations Article 13).^[1] The age listed for each player is on 18 March 2021, the first day of the tournament. A flag is included for coaches who are of a different nationality than their own national team. Players marked in bold have been capped at full international level.