These were the rosters at the 1981 Canada Cup.
Canada[]
Forwards and Defense: Barry Beck, Raymond Bourque, Mike Bossy, Marcel Dionne, Ron Duguay, Brian Engblom, Clark Gillies, Danny Gare, Bob Gainey, Butch Goring, Wayne Gretzky, Craig Hartsburg, Guy Lafleur, Ken Linseman, Rick Middleton, Gilbert Perreault, Denis Potvin, Paul Reinhart, Larry Robinson, Bryan Trottier. Training camp only -- Bill Barber, Randy Carlyle, Mike Gartner, Steve Payne, Rob Ramage, Jim Schoenfeld, Darryl Sittler, Steve Shutt, Bobby Smith, Dave Taylor
Goaltenders: Don Edwards, Mike Liut, Billy Smith. Training camp only -- Mario Lessard
Coaches: Scotty Bowman, Al MacNeil, Red Berenson, Pierre Pagé
Czechoslovakia[]
Forwards and Defense: Frantisek Cernik, Milan Chalupa, Jiri Dudacek, Miroslav Dvorak, Stanislav Hajdusek, Miloslav Horava, Arnold Kadlec, Jindrich Kokrment, Jaroslav Korbela, Norbert Kral, Jiri Lala, Jan Neliba, Milan Novy, Dusan Pasek, Lubomir Penicka, Jaroslav Pouzar, Pavel Richter, Darius Rusnak, Radoslav Svoboda, Oldrich Valek
Goaltenders: Karel Lang, Jiri Kralik
Coaches: Ludek Bukac, Stanislav Nevesely
Finland[]
Forwards and Defense: Pekka Arbelius, Matti Hagman, Raimo Hirvonen, Juha Huikari, Kari Jalonen, Arto Javanainen, Veli-Pekka Ketola, Markku Kiimalainen, Jari Kurri, Mikko Leinonen, Tapio Levo, Kari Makkonen, Timo Nummelin, Jukka Porvari, Pekka Rautakallio, Reijo Ruotsalainen, Jorma Sevon, Risto Siltanen, Ilkka Sinisalo, Juha Tuohimaa
Goaltenders: Hannu Lassila, Markus Mattsson
Coaches: Kalevi Numminen, Kari Makinen
Sweden[]
Forwards and Defense: Kent-Erik Andersson, Thomas Eriksson, Jan Erixon, Thomas Gradin, Anders Håkansson, Anders Hedberg, Peter Helander, Tomas Jonsson, Anders Kallur, Lars Lindgren, Bengt Lundholm, Lars Molin, Kent Nilsson, Ulf Nilsson, Stefan Persson, Jörgen Pettersson, Börje Salming, Thomas Steen, Patrik Sundström, Mats Waltin
Goaltenders: Peter Lindmark, Pelle Lindbergh
Coaches: Anders Parmström
USA[]
Forwards and Defense: Bill Baker, Neal Broten, Dave Christian, Steve Christoff, Richie Dunn, Mike Eaves, Robbie Ftorek, Tom Gorence, Mark Howe, Mark Johnson, Dave Langevin, Rod Langway, Reed Larson, Rob McClanahan, Bob Miller, Warren Miller, Ken Morrow, Mike O'Connell, Dean Talafous, Tom Younghans. Training camp only -- Jack Brownschidle, Alan Hangsleben, Paul Holmgren (injured/did not play), Steve Jensen, Joe Micheletti, Joe Mullen, Bill Nyrop, Mark Pavelich, Mike Ramsey, Gordie Roberts.
Goaltenders: Tony Esposito, Steve Baker. Training camp only -- Jim Craig (injured/did not play)
Coaches: Bob Johnson, John Cunniff, Mike Smith
USSR[]
Forwards and Defense: Sergei Babinov, Zinetula Bilyaletdinov, Nikolai Drozdetsky, Viacheslav Fetisov, Irek Gimayev, Vladimir Golikov, Sergei Kapustin, Alexei Kasatonov, Andrei Khomutov, Vladimir Krutov, Igor Larionov, Sergei Makarov, Alexander Maltsev, Vasili Pervukhin, Viktor Shalimov, Sergei Shepelev, Alexander Skvortsov, Valeri Vasiliev, Viktor Zhluktov, Vladimir Zubkov
Goaltenders: Vladislav Tretiak, Vladimir Myshkin
Coaches: Viktor Tikhonov, Vladimir Yurzinov