Italy Manager:
Roberto Mancini Italy announced a 33-man preliminary squad on 17 May 2021. The squad was extended to 34 players on 25 May, then reduced to 28 players on 30 May (with two players added and eight removed). The final squad was announced on 2 June.
Stefano Sensi withdrew injured and was replaced by
Matteo Pessina on 7 June.
Lorenzo Pellegrini withdrew injured and was replaced by
Gaetano Castrovilli on 10 June.
Switzerland Manager:
Vladimir Petković Switzerland announced a 29-man preliminary squad on 19 May 2021. The final squad was announced on 31 May. After the team's first match, goalkeeper
Jonas Omlin withdrew injured and was replaced by
Gregor Kobel on 13 June.
Turkey Manager:
Şenol Güneş Turkey announced a 30-man preliminary squad on 14 May 2021. The final squad was announced on 1 June.
Wales Manager:
Rob Page Wales announced on 23 April 2021 that
Rob Page would act as manager for the tournament, after regular manager
Ryan Giggs was charged by the
Crown Prosecution Service. The team announced a 28-man preliminary squad on 24 May. The final squad was announced on 30 May.
James Lawrence withdrew injured and was replaced by
Tom Lockyer on 31 May. ==Group B==