Tommy Dysart (24 December 1935 - 7 June 2022) was a Scottish-born actor, currently resident in Australia. Dysart has been a regular fixture on Australian television for several decades, frequently appearing in guest-starring roles in drama series and comedies, and in character roles in films and miniseries.

High-profile early roles included appearances in Skippy the Bush Kangaroo, Phoenix Five, and several roles in the Crawford Productions police drama series Homicide, Division 4 and Matlock Police. In the early 1980s he played what is perhaps his best-known acting role, that of vicious and corrupt prison officer Jock Stewart in Prisoner. In the storyline, after being fired from the prison service Stewart admitted to prisoner Judy Bryant that he was the one responsible for murdering her lesbian lover, fellow prisoner Sharon Gilmour.