Gregory Harrison was born on May 31, 1950 in Avalon, Catalina Island, California, USA. He is an actor and producer, known for Trapper John, M.D. (1979), Picnic (1986) and Razorback (1984). He has been married to Randi Oakes since May 3, 1981. They have four children.

Filmography

• 2025Signed, Sealed, Delivered: To the Moon and Back — Joe O'Toole
• 2024Signed, Sealed, Delivered: A Tale of Three Letters — Joe O'Toole
• 2022Jimmy and Carolyn
• 2021Signed, Sealed, Delivered: The Vows We Have Made — Joe O’Toole
• 2021Sweet Carolina — Pete
• 2021The Nine Kittens of Christmas — Chief Sam
• 2020The Vanished — Dr. Bradley
• 2019Love, Fall & Order — Hank Hart
• 9-1-1 — Phillip Buckley
• 2018Signed, Sealed, Delivered: To the Altar — Joe O'Toole
• 2017Fair Haven — Doctor Gallagher
• 2017Signed, Sealed, Delivered: Higher Ground — Joe O’Toole
• 2017Signed, Sealed, Delivered: Home Again — Joe O'Toole
• American Housewife — Dan
• Chesapeake Shores — Thomas O'Brien
• 2016My Christmas Love — Tom Baker
• 2016Signed, Sealed, Delivered: Lost Without You — Joe O’Toole
• 2016Signed, Sealed, Delivered: One in a Million — Joe O'Toole
• 2015Cloudy with a Chance of Love — Grant
• 2015Signed, Sealed, Delivered: Truth Be Told — Joe O'Toole
• Reckless — Dec Fortnum
• 2014The M Word
• 2014The Nine Lives of Christmas — Chief Sam
• 2013After All These Years — David
• 2012Undercover Bridesmaid — Mr. Thompson
• Body of Proof — Dr. Cameron Fischer
• Ringer — Tim Arbogast
• 2010Accidental Icon: The Real Gidget Story
• Hot in Cleveland — Dave
• Rizzoli & Isles — Ron Hanson
• 2009Au Pair 3: Adventure in Paradise — Oliver Caldwell
• Castle — Danny Valentine
• Drop Dead Diva — Brandon Tharpe
• 2009Give 'em Hell, Malone — Whitmore
• 2009Love n' Dancing — Carl
• Maneater — Teddy Alpert
• The Middle — Bennett Brooks
• Psych — Ted Lomax
• Reunion
• Joey — Dean
• 2003Hollywood's Magical Island: Catalina
• Miracles — Sheriff Ed Prescott
• NCIS — Roland Ebbakey
• One Tree Hill — Paul Norris
• 2001Au Pair II — Oliver Caldwell
• Ed — Nick Stanton
• 2000First Target — President Jonathan Hayes
• Strong Medicine — Dr. Randolf Kilner
• 1999Au Pair — Oliver Caldwell
• 1999First Daughter — President Jonathan Hayes
• Judging Amy — Tom Gillette
• Law & Order: Special Victims Unit — Nathan Speer
• 1999Murder at 75 Birch — Rick Todson
• Safe Harbor — John Loring
• 1998Air Bud: Golden Receiver — Dr. Patrick Sullivan
• 1998Running Wild — Matt Robinson
• 1997When Secrets Kill
• 1996Dark Skies — Old John Loengard (voice) (uncredited)
• Dark Skies — Old John Loengard
• 1996It's My Party — Brandon Theis
• 1996Summer of Fear — Mr. Marshall
• 500 Nations
• 1995A Dangerous Affair — Robert Kenzer
• 1995Hard Evidence — Trent Turner
• New York News — Jack Reilly
• 1995Nothing Lasts Forever — Dr. Benjamin 'Ben' Wallace
• Nothing Lasts Forever — Dr. Benjamin 'Ben' Wallace
• The Outer Limits — Dr. Larry Chambers
• 1994A Christmas Romance — Brian Harding
• 1994Lies of the Heart: The Story of Laurie Kellogg — Bruce Kellogg
• 1994Mortal Fear — Philip Montgomery
• Touched by an Angel — Pete Taylor, Richard, Don Costello, Director
• 1993Cadillac Girls — Sam
• 1993Caught in the Act — Scott McNally
• 1993Sudden Fury — Tom Kelley
• 1993The Tower — Executive Producer
• 1992Body Chemistry II: The Voice of a Stranger — Dan
• 1992Breaking the Silence — Paul Danner
• 1992Duplicates — Bob Boxletter
• 1992Split Images — Robbie Daniels
• 1991Bare Essentials — William 'Bill' Buzell owner of Luhana
• 1990Angel of Death — Gary Nicholson
• 1990Dangerous Pursuit — John
• The Family Man — Jack Taylor
• 1988Hot Paint — Willie
• 1988Red River — Cherry Valance
• 1987North Shore — Chandler
• Fresno — Torch
• 1986Oceans of Fire — Ben Laforche
• Pee-wee's Playhouse — Conky 2000 (voice) / Knucklehead (voice)
• 1986Picnic — Hal Carter
• 1986Pleasures — Executive Producer
• 1986The Nativity — Joseph (voice)
• 1985Seduced — Mike Riordan
• 1984Razorback — Carl Winters
• 1984Samson and Delilah — Executive Producer
• 1983Legs — Executive Producer
• 1983The Fighter — Merle Banks
• 1983The Hasty Heart — Sgt. Lachlen McLachlen
• Falcon Crest — Michael Sharpe
• 1981For Ladies Only — John Phillips, Producer
• 1980Enola Gay: The Men, the Mission, the Atomic Bomb — Capt. Bob Lewis
• 1980The Women's Room — Ben Volper
• 1979The Best Place to Be — Rick Jawlosky
• Trapper John, M.D. — Gonzo Gates, Director
• Centennial — Levi Zendt
• 1977Fraternity Row — Zac
• Logan's Run — Logan
• 1977The Gathering — Bud Jr.
• Battle of the Network Stars
• 1975Jim, the World's Greatest — Jim Nolan
• 1975Trilogy of Terror — Arthur Moore
• 1973The Harrad Experiment — Student (uncredited)
• M*A*S*H — Lt. Tony Baker

Appearances as themselves (7)

• 2008Not Quite Hollywood — Self
• 1990Night of 100 Stars III — Self
• 1989Friend to Friend: Armenian Earthquake Relief — Self
• 1987Happy 100th Birthday, Hollywood — Self
• 1985Night of 100 Stars II — Self
• 1980Kraft Salutes Disneyland's 25th Anniversary — Self
• The Mike Douglas Show — Self - Co-Host