This article lists the national football squads for the 1990 FIFA World Cup final tournament held in Italy, between 8 June and 8 July 1990. Each country's final squad consisted of 22 players and had to be confirmed by 29 May.
Replacement of injured players was permitted during the tournament at the discretion of FIFA. Two goalkeepers (for Argentina and England) were allowed to replace their injured counterparts under this ruling. Players marked (c) were named as captain for their national squad. Number of caps counts until the start of the World Cup, including all pre-tournament friendlies. A player's age is also at the start of the tournament.
*Following a rupture of his tibia and fibula, the Argentine team was authorized to replace goalkeeper Pumpido. Comizzo joined the team as third goalkeeper, but didn't play or even sit on the substitutes bench.