Group D
Argentina
Goalkeepers: Willy Caballero (Chelsea), Franco Armani (River Plate), Nahuel Guzman (Tigres).
Defenders: Gabriel Mercado (Sevilla), Federico Fazio (Roma), Nicolas Otamendi (Manchester City), Marcos Rojo (Manchester United), Nicolas Taglafico (Ajax), Javier Mascherano (Hebei Fortune), Marcos Acuna (Sporting Lisbon), Cristian Ansaldi (Torino).
Midfielders: Ever Banega (Sevilla), Lucas Biglia (AC Milan), Angel Di María, Giovani Lo Celso (both Paris St-Germain), Manuel Lanzini (West Ham), Cristian Pavon (Boca Juniors), Maximiliano Meza (Independiente), Eduardo Salvio (Benfica).
Forwards: Lionel Messi (Barcelona), Gonzalo Higuain, Paulo Dybala (both Juventus), Sergio Aguero (Manchester City).
Iceland
Goalkeepers: Hannes Thor Halldorsson (Randers FC), Runar Alex Runarsson (FC Nordsjælland), Frederik Schram (FC Roskilde).
Defenders: Kari Arnason (Vikingur), Ari Freyr Skulason (Lokeren), Birkir Mar Saevarsson (Valur), Sverrir Ingi Ingason (FC Rostov), Hordur Magnusson (Bristol City), Holmar Orn Eyjolfsson (Levski Sofia), Ragnar Sigurdsson (FC Rostov).
Midfielders: Johann Berg Gudmundsson (Burnley), Birkir Bjarnason (Aston Villa), Arnor Ingvi Traustason (Malmo FF), Emil Hallfredsson (Udinese), Gylfi Sigurdsson (Everton), Olafur Ingi Skulason (Kardemir Karabukspor), Rurik Gislason (SV Sandhausen), Samuel Fridjonsson (Valerenga), Aron Gunnarsson (Cardiff City).
Forwards: Alfred Finnbogason (Augsburg), Bjorn Bergmann Sigurdarson (FC Rostov), Jon Dadi Bodvarsson (Reading), Albert Gudmundsson (PSV Eindhoven).
Croatia
Goalkeepers: Danijel Subasic (Monaco), Lovre Kalinic (Gent), Dominik Livakovic (Dinamo Zagreb).
Defenders: Vedran Corluka (Lokomotiv Moscow), Domagoj Vida (Besiktas), Ivan Strinic (Milan), Dejan Lovren (Liverpool), Sime Vrsaljko (Atletico Madrid), Josip Pivaric (Dynamo Kiev), Tin Jedvaj (Bayer Leverkusen), Duje Caleta-Car (Red Bull Salzburg).
Midfielders: Luka Modric (Real Madrid), Ivan Rakitic (Barcelona), Mateo Kovacic (Real Madrid), Milan Badelj (Fiorentina), Marcelo Brozovic (Inter Milan), Filip Bradaric (Rijeka).
Forwards: Mario Mandzukic (Juventus), Ivan Perisic (Inter Milan), Nikola Kalinic (AC Milan), Andrej Kramaric (Hoffenheim), Marko Pjaca (Juventus), Ante Rebic (Fiorentina).
Nigeria
Goalkeepers: Francis Uzoho (Deportivo La Coruna), Ikechukwu Ezenwa (Enyimba), Daniel Akpeyi (Chippa United).
Defenders: William Troost-Ekong, Abdullahi Shehu (both Bursaspor), Tyronne Ebuehi (Benfica), Elderson Echiejile (Cercle Brugge), Bryan Idowu (Amkar Perm), Chidozie Awaziem (Porto), Leon Balogun (Brighton), Kenneth Omeruo (Chelsea).
Midfielders: Mikel John Obi (Tianjin Teda), Ogenyi Onazi (Trabzonspor), Wilfred Ndidi (Leicester), Oghenekaro Etebo (CD Feirense), John Ogu (Hapoel Be’er Sheva), Joel Obi (Torino, Italy).
Forwards: Ahmed Musa, Kelechi Iheanacho (both Leicester), Victor Moses (Chelsea), Odion Ighalo (Changchun Yatai), Alex Iwobi (Arsenal), Simeon Nwankwo (Crotone).