The following is a list of squads for all twelve national teams that competed at the 2017 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 have been capped at full international level either prior to the completion of the tournament or afterwards.
Sweden named their final squad on 30 May 2017.[3] On 6 June 2017, defender Pa Konate was ruled out of the tournament after a thigh injury, and was replaced by defender Egzon Binaku.[4]