Below are the squads for the 1978 FIFA World Cup final tournament in Argentina.
Note: With the exception of the goalkeepers, who were assigned the traditional shirt numbers for the role (1, 12 and 22) the Italian team was numbered alphabetically within their respective positions – Defenders (from 2 to 8), Midfielders (from 9 to 15), Wingers (16 and 17) and Forwards (from 18 to 21).
Hugo Hovenkamp withdrew from the squad before the tournament began, but after the deadline for naming replacement players had passed.
Each national team had to submit a squad of 22 players.
All the teams included 3 goalkeepers, except Mexico who only called two.