* Paul Newman as Reggie Dunlop
* Michael Ontkean as "The Chief"
* Strother Martin as "The Coach"
* Lindsay Crouse as "Suzanne"
* Jennifer Warren as "Jane"
* Dave 'The Hammer' Hanson as "Dave 'The Hammer' Hanson"
* Jerry Houser as "Ogie Oglethorpe"
* Steve Carlson as "Joe "The Butcher" McGrath"
* Jim McMurtry as "Tim 'The Tiger' McCracken"
* Ned Dowd as "Ned Braden"
* John Byrum as "Dickie Dunn"
* Allan Nicholls as "Jack 'Killer' Carlson"
* David 'The Hammer' Hanson as "Dave 'The Hammer' Hanson"
* Carl Weathers as "Grogan"
* Garrett Craig as "Dr. Murdoch"
There were a number of other actors in smaller roles.
"Slap Shot" also featured a large number of real-life hockey players, many of whom were playing themselves. These included:
* Dave Hanson
* Ned Dowd
* Joe "The Butcher" McGrath
* Tim "The Tiger" McCracken
* Jack "Killer" Carlson
"Slap Shot" is considered a classic sports comedy, and the film's blend of real hockey players with professional actors helped to create its unique style.