2021 UEFA European Under-21 Championship squads

The following is a list of squads for all sixteen national teams that competed at the 2021 UEFA European Under-21 Championship. Each national team had to submit a final squad of 23 players, three of whom had to be goalkeepers. Players in boldface were capped at full international level prior to being called up.

2021 UEFA European Under-21 Championship squads

The following is a list of squads for all sixteen national teams that competed at the 2021 UEFA European Under-21 Championship. Each national team had to submit a final squad of 23 players, three of whom had to be goalkeepers. Players in boldface were capped at full international level prior to being called up.