Manager: Fernando Santos
Key player: Cristiano Ronaldo - What is there that hasn't been said about Cristiano Ronaldo? The 33-year-old is his country's most-capped player and all-time record goalscorer and will go into the finals off the back of a fine second half of the season for Real Madrid.
Qualification:
A 2-0 victory over Switzerland in the final round of qualifying fixtures ensured that Portugal pipped their European neighbours to first place in Group B on goal difference.
Last time out:
2014 World Cup:
After a crushing 4-0 defeat to Germany in their opening game set the tone, with a 1-1 draw with the USA next up proving fatal as Portugal crashed out at the Group Stage, despite beating Ghana in their final game.
History:
Portugal have featured at six World Cups, with their best showings coming in 1966, when they were beaten by eventual winners England in the semi-finals and 2006, when France sent them packing at the same stage.
Who will they face?
Spain (7pm, June 15, Sochi), Morocco (1pm, June 20, Moscow), Iran (7pm, June 25, Saransk).
Final squad:
Goalkeepers: Rui Patricio (Sporting Lisbon), Beto (Goztepe), Anthony Lopes (Lyon).
Defenders: Ricardo Pereira (Porto), Cedric Soares (Southampton), Jose Fonte (Dalian Yifang), Bruno Alves (Rangers), Pepe (Besiktas), Ruben Dias (Benfica), Raphael Guerreiro (Borussia Dortmund), Mario Rui (Napoli).
Midfielders: Joao Moutinho (Monaco), Joao Mario (West Ham), Manuel Fernandes (Lokomotiv Moscow), William Carvalho (Sporting Lisbon), Adrien Silva (Sporting Lisbon), Bruno Fernandes (Sporting Lisbon), Bernardo Silva (Man City).
Forwards: Cristiano Ronaldo (Real Madrid), Andre Silva (AC Milan), Ricardo Quaresma (Besiktas), Goncalo Guedes (Valencia), Gelson Martins (Sporting Lisbon).