- Dennis Hopper as Mad Dog Morgan
- Frank Thring as Governor Arthur Phillip
- David Gulpilil as Nullah Nullah
- Jack Thompson as Captain William Bryant
- Barbara Wyngard as Mrs. Louisa Macquarie
- John Jarratt as John Dawes
- Bill Hunter as Constable
- John Hargreaves as Ensign Phelps
- Harold Hopkins as Reverend Richard Johnson