Donald Sage Mackay
- Acting
Known for
Filmography
- Animal Friends · John Fitzgerald
- Nuremberg · Senator William Fulbright
- Mystery Island: House Rules · De. Stanley Wellington
- Going Dutch · General Gus King
- Eric · Jerry
- The Regime · Richard Kaiser
- The Great Escaper · Nathan
- The Following Events Are Based on a Pack of Lies · Norm Niedecker
- Red, White & Royal Blue · Jeffrey Richards
- Wreck · Henry Allan
- Cell 8 · Pedersen
- Alex Rider · General Lomis
- Treadstone · Greg Sanders
- Tom Clancy's Jack Ryan · CJCS Jeff Maguire
- Masters of Sex · John Watson
- The Good Mother · Bob
- Elementary · Ben
- Blue Bloods · Lt. Mike Collier
- Modern Family · George
- The Good Wife · Mike Pedrano
- The Amazing Mrs. Novak
- Play the Game · Retirement Home Director
- Mad Men · Dr. Gosman
- Weeds · TSA Agent Warren
- House · Neil
- NCIS · Kerry Killmartin
- What I Like About You · Super
- According to Jim · Greg
- Scrubs · Doctor, Dr. Page
- The District · Reporter #1
- Malcolm in the Middle · Man
- The West Wing · Ellis
- Providence · Officer Duncan
- The Swan Princess: The Mystery of the Enchanted Kingdom · Jean-Bob (Voice)
- The Practice · Howard McGowan
- 7th Heaven · Host
- JAG · Pilot
- ER · Detective Lash
- Frasier · Eduardo
- A Colt Is My Passport · Wilson