William MacDonald
Actor · Since 1985
Known for
William MacDonald is a steady television actor with the kind of face viewers place instantly. Horror has been the steadiest territory. The career runs to 36 years so far. 20 episodes in 'Riverdale' built the recognition. 'Slither' rounds out the better-known part of the filmography. Credits begin in 1990.
William MacDonald
Actor · Since 1985
31 Movies · 35 Series
William MacDonald is a steady television actor with the kind of face viewers place instantly. Horror has been the steadiest territory. The career runs to 36 years so far. 20 episodes in 'Riverdale' built the recognition. 'Slither' rounds out the better-known part of the filmography. Credits begin in 1990.
Movies
Plays Officer
Romeo Must Die
2000
Plays Mr. Strutemyer
Slither
2006
Plays Dr. Karras
White Noise 2: The Light
2007
Plays Mr. Sandford
There's Someone Inside Your House
2021
Plays Frank
The Captive
2014
Plays Sheriff Caldwell
Summer of 84
2018
Plays Col. Gavin Bishop
Hollow Man II
2006
Plays Sheriff Devlin
Alien Agent
2007
Plays Louis Holland
Cold Blooded
2012
Plays Miner in Bar
The Snow Walker
2003
Plays Glen Vukovich
Double Life
2023
Plays In the Back
Dudley Do-Right
1999
Plays Stross Representative
Takedown
2010
Plays MP Corporal
The Fourth War
1990
Plays Jonas Baskin
On the Other Hand, Death: A Donald Strachey Mystery
2008
Plays Cruikshank
Final Days of Planet Earth
2006
Plays Boone
Blackheart
1998
Plays Phelps (as William Macdonald)
Golf Punks
1998
Plays Martin
Shelf Life
2004
Plays Sheriff Bell
The Spiral Staircase
2000
Plays Baby Doll
Run Rabbit Run
2012
Plays Sasha Kanachowski
The Rhino Brothers
2002
Plays Jack
Mount Pleasant
2006
TV Shows
Plays Principal Featherhead
Riverdale
2017
Plays Gary Holden
Travelers
2016
Plays Dr. Oppenheim
The X-Files
1993
Plays George Nicol
The Terror
2018
Plays FBI Special Agent Grant
The Outer Limits
1995
Plays Gene Huskk
The Flash
2014
Plays Abraham Peterson
Supernatural
2005
Plays Bob Cravens
The Good Doctor
2017
Plays Danny Ramirez
I Will Find You
2026
Plays Agent Nolan
Millennium
1996
Plays Dr. Kaplan
Supergirl
2015
Plays Henry
The Night Agent
2023
Plays Neighbour
Tru Calling
2003
Plays Conductor
Quantum Leap
1989
Plays Harper
Viper
1994
Plays First Officer Dillard
Mayday
2003
Plays Boss Mechanic
Haven
2010
Plays Medical Moonsuit
Sliders
1995
Plays Farmer
Resident Alien
2021
Plays Jeargen Knauff
Hemlock Grove
2013
Plays Sheriff Gale
Tracker
2024
Plays Jones
Poltergeist: The Legacy
1996
Plays Logan Hicks
Republic of Doyle
2010
Plays Phil
Psych
2006
Plays Virgil Biggs
Stargate Universe
2009
Plays Captain Griffin
Stargate Atlantis
2004
Plays Paramedic
MacGyver
1985
Plays Buson / Sheldon
Rookie Blue
2010
Plays Masterson
Smallville
2001
Plays Dell
The Sentinel
1996
Latest Trailers
Watch Trailer
Another Sweet Christmas
Full Filmography 66
I Will Find You
Danny Ramirez
2026Season 1
Stick
Ron(uncredited)
2025Season 1
The Last of Us
Double
2025Season 2
Tracker
Sheriff Gale
2024Season 1
Double Life
Glen Vukovich
2023
The Night Agent
Henry
2023Season 1
Resident Alien
Farmer
2022Season 2
There's Someone Inside Your House
Mr. Sandford
2021
Upload
Reverend Peyfort
2020Season 1
Photos
Frequently Asked Questions
What are the most famous roles of William MacDonald?
William MacDonald is best known for roles in Slither, Summer of 84, Romeo Must Die.
How many movies has William MacDonald been in?
Over a 36-year career (since 1990), William MacDonald has appeared in 31 movies and 34 TV shows.
What was William MacDonald's first movie?
The career of William MacDonald began with The Fourth War (1990).
What is William MacDonald's most recent movie or series?
William MacDonald's most recent release is I Will Find You, which premiered on June 18, 2026.
What TV shows has William MacDonald appeared in?
On television, William MacDonald has appeared in Riverdale, The Good Doctor, The Flash, Supernatural.
William MacDonald
William MacDonald is a prolific Canadian actor and producer known for extensive work in television, film, and over 80 theatrical productions. He is recognized for roles in Riverdale, The Good Doctor, Supergirl (Dr. Kaplan), and The Flash (Gene Huskk).
He is frequently confused with fellow Canadian actor Bill MacDonald, as both share similar credits and guest-star in similar procedural dramas.