John Karlen (born John Adam Karlewicz) was an American character actor who played multiple roles (Willie Loomis, Carl Collins, William H. Loomis, Desmond Collins, Alex Jenkins, and Kendrick Young) on the ABC serial Dark Shadows, in various episodes which aired from 1966 to 1971. Karlen also played Harvey Lacey, husband of Mary Beth Lacey (played by Tyne Daly), on the CBS crime series Cagney & Lacey (1982–88).

Filmography

• 1996Cagney & Lacey: True Convictions — Harvey Lacey
• 1995Cagney & Lacey: The View Through the Glass Ceiling — Harvey Lacey
• 1995Cagney & Lacey: Together Again — Harvey Lacey
• 1994Cagney & Lacey: The Return — Harvey Lacey
• 1994MacShayne: Winner Takes All — Waldo Church
• 1994Roseanne: An Unauthorized Biography — Jerry Barr
• 1993Surf Ninjas — Mac
• 1993Without Warning: Terror in the Towers — Jack McAllister
• 1992Calendar Girl, Cop, Killer? The Bambi Bembenek Story — John Garner
• Mad About You — Gus Stemple
• 1992The Dark Wind — Jake West
• In a Child's Name — Joe Silvano
• 1991Perry Mason: The Case of the Glass Coffin — Jake Morrison
• 1990Nightmare on the 13th Floor — Sgt. Madden
• 1989Babycakes — Al
• Snoops — Sam Akers
• 1989The Cover Girl and the Cop — Lieutenant Wingo
• 1988Date Rape — Joe Farrell
• Police Story — Capt. Harrison
• 1988Police Story: Burnout — Capt. Harrison
• 1987Daddy — Mike Burnette
• 1987Downpayment on Murder — Albert
• 1986Native Son — Max
• 1986The Return of Mickey Spillane's Mike Hammer — Chapel
• 1986Welcome Home, Bobby — Geffin
• 227
• 1985Hostage Flight — DiSalvo
• Finder of Lost Loves — Arthur Barwell
• 1984Gimme an 'F' — Bucky Berkshire
• 1984Impulse — Bob Russell
• Murder, She Wrote — Lt. Martin McGinn, Patrick MacNair, Superintendent Arthur Joyce
• 1984Racing with the Moon — Mr. Nash
• American Playhouse — Reverend Walker, Boris Max
• Cagney & Lacey — Harvey Lacey
• Fame
• 1982Rosie: The Rosemary Clooney Story — Uncle George
• 1981American Dream — Coach Ritter
• Hill Street Blues
• 1981Pennies from Heaven — The Detective
• 1980The Long Days of Summer — Duane Haley
• 1979Express to Terror — Quinn
• Supertrain — Quinn
• 1979The Last Ride of the Dalton Gang — Charlie Powers
• 1979The Return of Mod Squad — Marty
• Trapper John, M.D.
• 1978Colorado C.I. — Kessler
• Kaz
• 1978Killer's Delight — Danny
• Sword of Justice
• Vega$ — Eddie Stolvak
• ABC Weekend Specials
• Hunter — Power plant worker
• Lou Grant — Ken Navaretti
• The Hardy Boys / Nancy Drew Mysteries
• 1976A Small Town in Texas — Lenny
• Charlie's Angels — Leonard Chaffey
• Quincy, M.E. — Agent Brice
• 1975Delancey Street: The Crisis Within — Richard Copell
• Joe Forrester
• 1975Melvin Purvis G-Man — 'Tony' Anthony Redecci
• Mobile One — Mickey Scanlon
• Starsky & Hutch
• 1975The Kansas City Massacre — Sam Cowley
• 1975Trilogy of Terror — Thomas Amman
• 1974Nightmare at 43 Hillcrest — Frank Linwood
• 1974The Cloning of Clifford Swimmer
• 1974The Invasion of Carol Enders — David Hastings
• The Rockford Files — Leo
• Barnaby Jones — Johnny Alban
• Doc Elliot — Vincent Parker
• 1973Frankenstein — Otto Roget
• Frankenstein — Otto Roget
• Kojak — Pinky, Hicks
• Police Story
• 1973Shirts/Skins — Herbie Bush
• The Magician — Jim Russell
• 1973The Picture of Dorian Gray — Alan Campbell
• ABC Afterschool Special — Joe Farrell
• 1972Night of Terror — Manning
• The Sixth Sense — Ed
• The Streets of San Francisco
• The Waltons — Rev. Ezekiel L. Henshaw
• All in the Family — Leo
• 1971Daughters of Darkness — Stefan Chilton
• 1971Night of Dark Shadows — Alex Jenkins
• 1970House of Dark Shadows — Willie Loomis
• Hawaii Five-O — Harris
• Medical Center — Frank Crane
• The Mod Squad — Johnny Wexford
• Mannix
• Dark Shadows — Willie Loomis
• Stoney Burke — Mickey
• The Gallant Men
• The Detectives
• Naked City — Chuck
• Hallmark Hall of Fame — Ned

Appearances as themselves (1)

• 2019Master of Dark Shadows — Self