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Michael O'Keefe
★ Acting

Michael O'Keefe

Born 1955 · Mount Vernon, New York, USA · Active 1972–2025

Michael O'Keefe, born in 1955, is an American actor known for his diverse roles across film and television. In The Whoopee Boys (1986), he brings a comedic flair to the story of two friends navigating the challenges of life, while in Apartment 143 (2011), he showcases his ability to handle the eerie atmosphere of a supernatural thriller. O'Keefe's performances contribute a unique blend of humor and tension to the cult film landscape, making him a notable figure in both the comedy and horror genres.

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Apartment 143

Apartment 143

2011 ★ 5.0
as Dr. Helzer

A parapsychology team is asked to investigate the White family in Apartment 143. Alan White (Kai Lennox) has lost his wife initially explained as being to an unspecified illness, but later clarified as an automobile accident during a psychotic episode. The family started to experience strange events shortly after the death, and relocated from their prior home to the apartment to escape them. The move was initially successful, but after about a week strange incidents resumed in the new location. The team consists of Dr. Helzer (Michael O'Keefe), Paul Ortega (Rick Gonzalez), and the technician, Ellen Keegan (Fiona Glascott). After they set up their equipment, they get some compelling evidence on camera.

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Career Highlights Top 6 by popularity · TMDB

Filmography

108 credits
2020s 6 credits
2025
Movie
2025
TV ★ 7.7
2025
The Hunting Party as Philip Beaumont
TV ★ 7.1
2023
One True Loves as Colin Blair
Movie ★ 6.2
2022
TV ★ 7.6
2021
Things Heard & Seen as Travis Laughton
Movie ★ 5.7
2010s 25 credits
2019
Inside Game as Mr. Donaghy
Movie ★ 3.9
2019
The Enemy Within as National Security Advisor
TV ★ 7.0
2018
Movie ★ 7.5
2016
MacGyver as Harry McGyver
TV ★ 7.3
2016
Billions as Eric Scott
TV ★ 7.8
2015
Eye in the Sky as Ken Stanitzke
Movie ★ 7.0
2015
Sneaky Pete as Detective Winslow
TV ★ 7.5
2014
Showing Up as Self
Movie ★ 9.2
2014
Movie
2013
The Wait as Ben's Dad
Movie ★ 4.2
2013
Movie ★ 4.2
2013
King & Maxwell as Frank Rigby
TV ★ 7.0
2013
Sleepy Hollow as Director Jack Walters
TV ★ 7.4
2013
The Blacklist as Mr. Deavers
TV ★ 7.6
2013
Masters of Sex as Harry Eshelman
TV ★ 7.1
2012
Movie ★ 3.8
2012
Junction as Walters
Movie ★ 5.7
2012
Daybreak as Professor Aaron Wilkins
TV ★ 6.5
2012
Elementary as Harris Waylon Greer
TV ★ 7.6
2011
Movie ★ 5.5
2011
Apartment 143 as Dr. Helzer
Movie ★ 5.2
2011
Too Big to Fail as Chris Flowers
Movie ★ 7.0
2011
Sarina's Song as Charles Berkeley
Movie ★ 3.0
2011
Homeland as John Redmond
TV ★ 7.6
2010
Chasing 3000 as Dr. Stuart
Movie ★ 6.2
2000s 31 credits
2009
Movie ★ 8.5
2008
Frozen River as Trooper Finnerty
Movie ★ 6.6
2008
American Violet as Calvin Beckett
Movie ★ 6.7
2008
Keith as Alan Ascher
Movie ★ 7.0
2008
Eleventh Hour as Philip Gifford
TV ★ 6.6
2008
Leverage as Darren Hoffman
TV ★ 7.6
2007
Michael Clayton as Barry Grissom
Movie ★ 6.8
2007
Cherry Crush as Detective Griffin
Movie ★ 4.7
2007
An American Crime as Reverend Bill Collier
Movie ★ 7.3
2007
Saving Grace as Father Lloyd Tierney
TV ★ 7.3
2007
Boulevard of Broken Dreams as Self (archive footage)
TV ★ 3.0
2007
Burn Notice as Wallace
TV ★ 7.5
2006
Brothers and Sisters as Wally Wandell
TV ★ 7.1
2006
TV ★ 5.7
2005
The Inner Circle as Jack Scott
Movie ★ 7.0
2005
Numb3rs as Reverend Joseph Ezra
TV ★ 7.0
2005
Ghost Whisperer as Dr. Calvin Byrd
TV ★ 8.1
2005
TV ★ 5.6
2005
Criminal Minds as Dr. Stan Howard
TV ★ 8.3
2005
The Closer as Agent Tim Hecht
TV ★ 7.9
2004
House as Fletcher Stone
TV ★ 8.6
2003
Movie ★ 7.0
2002
The Hot Chick as Richie
Movie ★ 6.4
2001
The Glass House as Dave Baker
Movie ★ 6.0
2001
Movie ★ 5.5
2001
Herman U.S.A. as Dennis
Movie ★ 4.5
2001
The Pledge as Duane Larsen
Movie ★ 6.6
2001
TV ★ 7.6
2001
TV ★ 7.6
2000
Movie ★ 5.0
2000
TV ★ 7.6
1990s 23 credits
1999
Movie ★ 5.8
1999
TV ★ 7.9
1999
TV ★ 7.9
1999
The West Wing as Will Sawyer
TV ★ 8.3
1999
TV ★ 7.9
1996
The People Next Door as Garrett James
Movie ★ 8.0
1996
Movie ★ 6.0
1996
Ghosts of Mississippi as Merrida Coxwell
Movie ★ 6.6
1996
Life's Work as Kevin Hunter
TV ★ 7.5
1995
Three Wishes as Adult Tom
Movie ★ 6.3
1995
Nina Takes a Lover as Journalist
Movie ★ 5.6
1995
The Outer Limits as Eddie Wexler
TV ★ 7.7
1994
Movie ★ 8.0
1994
Movie ★ 5.0
1993
Movie ★ 3.3
1992
Middle Ages as Ron Steffey
TV ★ 7.5
1991
Out of the Rain as Frank Reade
Movie ★ 5.0
1990
Too Young to Die as Mike Medwicki
Movie ★ 5.5
1990
Fear as Jack Hays
Movie ★ 5.7
1990
Movie ★ 2.7
1990
TV ★ 7.0
1990
Law & Order as Cally Lonegan / Professor Donald Lonegan
TV ★ 7.3
1990
Law & Order as Archbishop Keane
TV ★ 7.3
1980s 14 credits
1989
Movie ★ 7.7
1988
Disaster at Silo 7 as Sgt. Mike Fitzgerald
Movie ★ 7.3
1988
Unholy Matrimony as Dr. Cassius William 'Bill' Sander
Movie ★ 8.3
1988
Roseanne as Fred
TV ★ 6.8
1987
Ironweed as Billy
Movie ★ 6.3
1986
The Whoopee Boys as Jake Bateman
Movie ★ 5.4
1985
The Slugger's Wife as Darryl Palmer
Movie ★ 3.6
1985
TV ★ 7.2
1984
Finders Keepers as Michael Rangeloff
Movie ★ 5.4
1983
Nate and Hayes as Nathaniel Williamson
Movie ★ 6.1
1983
The Hitchhiker as Richard Shepard
TV ★ 6.3
1982
Split Image as Danny "Joshua" Stetson
Movie ★ 6.0
1980
Caddyshack as Danny Noonan
Movie ★ 6.6
1980
A Rumor of War as Lt. Walter Cohen
TV ★ 8.0
1970s 8 credits
1979
The Great Santini as Ben Meechum
Movie ★ 6.8
1978
Movie ★ 6.4
1978
TV ★ 7.8
1976
Movie ★ 6.5
1976
Panache as Horseman
Movie ★ 10.0
1975
Friendly Persuasion as Josh Birdwell
Movie ★ 7.5
1972
M*A*S*H as Corporal Travis
TV ★ 7.9
1972
The Waltons as Chad Marshall
TV ★ 7.2
s 1 credit
After All as Jake
Movie