Movies:
* The Sting (1973): Screenwriter
* The Towering Inferno (1974): Screenwriter
* The Gambler (1974): Screenwriter
* The Last Tycoon (1976): Screenwriter
* The Deep (1977): Screenwriter
* The Electric Horseman (1979): Screenwriter
* The Pursuit of D.B. Cooper (1981): Screenwriter
* The Right Stuff (1983): Screenwriter (co-written with Tom Wolfe)
* Jagged Edge (1985): Screenwriter
* Fatal Attraction (1987): Screenwriter (co-written with James Dearden)
* The Two Jakes (1990): Screenwriter
Television:
* The Defenders (1961-1965): Writer
* The Untouchables (1960-1963): Writer
* Route 66 (1960-1964): Writer
* The Fugitive (1963-1967): Writer
* The Twilight Zone (1959-1964): Writer
* Naked City (1958-1963): Writer
* The Alfred Hitchcock Hour (1962-1965): Writer
This list is not exhaustive, but it highlights some of Don Mahin's most notable work. He was a highly respected screenwriter who contributed to many classic films and television series.