List of actors and actresses who appeared in Quantum Leap and Quantum Leap (2022).
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Quantum Leap
Appeared in Quantum Leap (1989-1993):
- Jerry Adler: Lenny Greenman
- Newell Alexander: John Beckett
- Debbie Allen: Joanna Chapman
- John Anderson: Pat Knight
- Jennifer Aniston: Kiki Wilson
- Susan Anton: Helen Le Baron
- R. G. Armstrong: Davison
- Diedrich Bader: Dillon
- Parley Baer: Dr. Rogers/Judge Shiner
- Scott Bakula: Dr. Samuel 'Sam' Beckett/John Beckett
- Elya Baskin: Major Yuri Kosenko
- Hinton Battle: Thames
- Frances Bay: Millie Reynolds
- Michael Beach: Nathaniel Simpson
- Jason Beghe: Det. Sgt. Roger Skaggs
- Donald P. Bellisario: Dr. Timothy Mintz/Miner
- Michael Bellisario: Billy/Kid #2/Little Boy/Martin Jr.
- Troian Bellisario: Tersa Buckner
- Fran Bennett: Marie Billings/Ada Simpson
- Gregg Binkley: Deputy
- Josie Bissett: Becky
- Michael Boatman: Sgt. Billy Johnson
- Mark Boone Junior: Mad Dog
- Guy Boyd: John Stoddard
- Stanley Brock: FBI Agent Greg Richardson
- David Allen Brooks: Clint Beaumont
- Candy Ann Brown: Dr. Verbeena Beeks
- Julie Brown: Bunny O'Hare/Thelma Lou Dickey
- Eric Bruskotter: Beau/Glen/Red
- Olivia Burnette: Susan Bruckner/Katie Beckett
- K Callan: Lenore Mackenzie
- John Calvin (actor): Buddy Wright
- Timothy Carhart: Mac Ellroy
- Nick Cassavetes: Primo La Palma
- Maree Cheatham: Margaret Twilly
- Claudia Christian: Allison Grimsley
- Kristen Cloke: Shirley Constantine
- Renee Coleman: Alia
- William Cort: Flanners
- Marcia Cross: Stephanie Heywood
- John Cullum: Don Quixote/John O'Malley/Miguel de Cervantes
- John D'Aquino: Frank LaMotta/Tonchi
- Lisa Darr: Ginny Will
- Diane Delano: Prostitute #2
- Elizabeth Dennehy: Beth Ryan
- Dean Denton: Capt. Tom Jarret
- Susan Diol: Beth Calavicci
- Cameron Dye: Leon Stiles
- Edward Edwards: Prof. Davenport
- Stacy Edwards: Elisabeth Spokane
- Tom Everett: Deputy Sheriff Hazlitt
- Michael Fairman: Judge Mulhearn
- Terry Farrell: Lt. Lisa Sherman
- John Finn: Admiral Spencer
- Meg Foster: Laura Fuller
- Charles Frank: Reed Cole / Reed Dalton
- Susan French: Melny Trafford
- Alan Fudge: Dr. Richard Sandler
- Kurt Fuller: Burt 'The Turtle' Rosencranz
- Penny Fuller: Jane Lindhurst
- Jenny Gago: Margerita Lorrea Tearsa/Theresa LaRea
- Terri Garber: Teresa Pacci
- Lee Garlington: Nurse Chatam
- Willie Garson: Alik Idell/Lee Harvey Oswald/Seymour
- Mike Genovese: Don Geno Frascotti/Mr. Collins
- Denise Gentile: Janelle
- Brian George: Ben
- Marcus Giamatti: Rick Upfield
- Mary Pat Gleason: Mrs. Thompson
- Caroline Goodall: Dr. Leslie Ashton
- Joseph Gordon-Levitt: Kyle
- David Graf: Sheriff Nolan
- Michael Gregory: Col. Wojohowitz
- Jon Gries: Flash McGrath/Roscoe
- Harry Groener: Det. Ward
- Anne Haney: Cassy Thailer/Grace Beaumont
- Jerry Hardin: Ed Saxton
- Melora Hardin: Abigail Fuller
- Neil Patrick Harris: Mike Hammond
- Teri Hatcher: Donna Eleese
- Richard Herd: Moe Stein/Ziggy Ziganovich
- Judith Hoag: Julie Miller
- Rance Howard: Doc Graves
- John Kapelos: Dr. Mustafa El Razul
- Matt Landers: Richard
- Scott Lawrence: Tibby Johnson
- Stephen Lee: Sheriff Bo Loman
- Nancy Lenehan: Colleen McBain
- Ernie Lively: Col. Deke Grimwald
- Robyn Lively: Annie Wilkins
- Chi Muoi Lo: Vinh
- Rod Loomis: Boris the Butler
- Michael Madsen: Blue
- Valerie Mahaffey: Mary Greely
- Mark Margolis: Adriano
- Patrick Massett: Ralph Beaumont/Rusty
- Neal McDonough: Chucky Myerwich
- Roddy McDowall: Edward St. John V
- Bruce McGill: Al the Bartender/Weird Ernie
- Mary Elizabeth McGlynn: Sue Anne Winters
- Michael McGrady: Oscar
- Melinda McGraw: Salvation Army Capt. Laura Downey
- Stephen McHattie: Stawpah
- Kate McNeil: Olivia Barrett Covington
- Sandy McPeak: Father John McRoberts
- Julio Oscar Mechoso: Raul Casta
- Scott Menville: Cameron Wilson
- Glenn Morshower: Grady
- Mary Gordon Murray: Leta Aider
- John Allen Nelson: Capt. Bill 'Bird Dog' Birdell
- Danny Nucci: Tony Pronti
- Alan Oppenheimer: Earl Skinner
- Don Keith Opper: Crooner
- Harrison Page: Reverend Walters
- Natasha Pavlovich: Marina Oswald
- Robert Pine: Ted
- Larry Poindexter: Capt. Tony LaMott
- C.C.H. Pounder: Mama Harper
- David Powledge: Luther
- Deborah Pratt: Narrator/Ziggy/Troian Claridge
- Jason Priestley: Pencil
- Patricia Richardson: Rachel Porter
- Richard Riehle: Clifford Vargas/Lt. Lannon
- Leon Rippy: Sheriff Taggart
- Wendy Robie: Mrs. Takins
- Charles Rocket: Commander Dirk Riker/Michael G. Blake
- Stephen Root: John Tremaine Jr.
- Arthur Rosenberg: Jim McBain
- Jennifer Runyon: Peggy Stratton
- Amy Ryan: Libby McBain
- Fran Ryan: Dorothy Jaeger
- Ernie Sabella: Manny/Sancho Panza
- Bob Saget: Mack MacKay
- Paul Sand: Charlie
- Reni Santoni: Sgt. Lopez
- Joe Santos: Tony La Palma
- Raphael Sbarge: Will
- Sam Scarber: Warden Clifton Myers
- William Schallert: Judge Eugene Haller
- Carolyn Seymour: Zoey/Priscilla Stoltz
- W. Morgan Sheppard: Gooshie
- Brooke Shields: Vanessa Foster
- William Shockley: Boner
- Pat Skipper: Lucas 'Luke' Marlet/Tequila
- Amy Steel: Maggie Spontini
- Dean Stockwell: Rear Admiral Albert 'Al' Calavicci
- Guy Stockwell: Jake Edwards
- Michael Stoyanov: Kevin Bruckner
- Deborah Strang: Aggie
- Joris Stuyck: Peter Lawford
- Robert Symonds: Dr. Wickless
- Kristoffer Tabori: Byron
- Rita Taggart: Marsha
- Russ Tamblyn: Bert Glasserman
- Ron Taylor: Papa David Harper
- Andrea Thompson: Maggie Dawson
- Kenneth Tigar: Ben Steiner
- Lauren Tom: Sophie
- Barbara Tarbuck: Esther
- Sven-Ole Thorsen: Guy at the Door
- Tamlyn Tomita: Tamlyn Matsuda
- Liz Torres: Angelita Carmen Guadalupe Cecelia Jimenez
- Patty Toy: Bar Girl
- Myra Turley: Dolores
- Janine Turner: Michelle
- Fabiana Udenio: Eva Panzini
- Liz Vassey: Barbara Whitmore/Paula Fletcher
- Ann Walker: Leola
- Jamie Walters: Al 'Bingo' Calavicci/Young Max
- Romy Walthall: Cheryl Wilson
- Lisa Waltz: Lilly
- Patrick Warburton: Blaster
- J.C. Wendel: Receptionist
- Kathleen Wilhoite: Norma Jean Pilcher
- Noble Willingham: Gene
- Theodore Wilson: Ernie Tyler/Jimmy Grady
- Lauren Woodland: Jamie Spontini
- George Wyner: Ben Harris
- Amanda Wyss: Suzanne Elsinger
- Amy Yasbeck: Frankie Washarskie
- Dan Ziskie: Sgt. Riley
Quantum Leap (2022)
Appeared in Quantum Leap (2022-2024):
- François Arnaud: Sgt. Curtis Bailey
- Caitlin Bassett: Addison Augustine
- Andy Bean: Ganz
- Daniel Bonjour: Trevor
- Emerson Brooks: Master Chief
- Eugene Byrd: Dr. Harper
- P. J. Byrne: Sgt. Enock Abrams
- Shane Callahan: Charles Gray
- Amanda Carlin: Contessa Gray
- François Chau: Louis Tann
- Joe Dinicol: Eugene Wagner
- Patrick Fischler: Dr. Mueller
- James Frain: Gideon Ridge
- Peter Gadiot: Tom Westfall
- Edward Gelhaus: Stuart Johnson
- Azita Ghanizada: Layla 'Nomad' Adele
- Erica Gimpel: Laura Evans
- Matthew Glave: Colonel Jack Parker
- Justin Hartley: Jake
- Ernie Hudson: Herbert 'Magic' Williams
- Bart Johnson: Paul Kirk
- C.S. Lee: Jin Park
- Nanrisa Lee: Jenn Chou
- Raymond Lee: Dr. Benjamin 'Ben' Song
- Elyse Levesque: Lola Gray
- Billy Lush: Vince
- Graham Patrick Martin: Sean Egan
- Tim Matheson: Neal Russell
- Kerri Medders: Daisy Gray
- Josh Meyers: Percival Gray
- Janet Montgomery: Rebecca Egan
- Mason Alexander Park: Dr. Ian Wright
- Lou Diamond Phillips: Shepherd Barnes
- Robert Picardo: Dr. Edwin Woolsey
- Carly Pope: Samantha Stratton
- Georgina Reilly: Janis Calavicci
- Brandon Routh: Commander Alexander Augustine
- Melissa Roxburgh: Lt. Ellen Grier
- Jewel Staite: Naomi Harvey
- Eliza Taylor: Hannah Carson
- Deborah Ann Woll: Carly Farmer
