All 192 actors in both L.A. Law and Quantum Leap
192 actors have appeared in both L.A. Law and Quantum Leap, across 266 episodes. The most-credited is Michael Fairman, Judge Douglas McGrath in L.A. Law and Judge Mulhearn in Quantum Leap.
| Actor | In L.A. Law | In Quantum Leap | Eps | Eps |
|---|---|---|---|---|
| Michael Fairman | Judge Douglas McGrath | Judge Mulhearn | 14 | 1 |
| Anne Haney | Judge Marilyn Travelini | Cassy Thailer, Grace Beaumont | 11 | 2 |
| Don Sparks | Russell Spitzer | Jake Wiles | 8 | 1 |
| Kathleen Wilhoite | Rosalie Hendrickson | Norma Jean Pilcher | 7 | 1 |
| Michael Holden | D.A. George Handleman | Herb Stein | 6 | 1 |
| Keith Mills | Judge Walter Green | Lionel / Mayor | 12 | 1 |
| Carolyn Seymour | Vivian Askoff | Zoey, Miss Stoltz | 2 | 4 |
| CCH Pounder | Judge Roseann Robin | Mama Harper | 4 | 1 |
| Stephen Root | Attorney Brandon McCafferty, Ferret | John Tremaine Jr. | 4 | 1 |
| Tom Verica | Billy Castroverti | Impala | 9 | 1 |
| Lorinne Vozoff | Judge Robert Harbin, Margaret Finneman | Mary Walters | 8 | 1 |
| Charles Frank | Jimmy Markham | Reed Dalton | 3 | 1 |
| Gregory Itzin | D.A. Jack Angeletti | Sam Phillips | 3 | 1 |
| Kurt Fuller | Clifford Gild, Ed Freeling, Stan Nussbaum | Burt 'The Turtle' Rosencranz | 3 | 1 |
| Diane Delano | Rhonda Vasek | Prostitute | 6 | 1 |
| Jerry Hardin | D.A. Malcolm Gold | Ed Saxton | 6 | 1 |
| Fran Bennett | Judge Hillary Miller Johnson | Marie Billings, Ada Simpson | 2 | 4 |
| Jennifer Rhodes | D.D.A. Gylkowski | Agnes Stevens | 2 | 1 |
| R.G. Armstrong | Frank Osgood | Davison | 2 | 1 |
| Kathleen Noone | Fran Hendrickson | Sadie Cotter | 4 | 1 |
| Richard Riehle | Roger Beekman, Edmund Clancy | Clifford Vargas, Lieutenant Lannon | 3 | 2 |
| Sandy McPeak | George Cromwell, Peter Phillipson | Father John McRoberts | 4 | 1 |
| Bill Marcus | Glen Maroni | Captain Vincent | 3 | 1 |
| Claudia Christian | Susan Convers | Allison Grimsley | 1 | 1 |
| Douglas Roberts | Richard Yzerman | Mike | 3 | 1 |
| James Morrison | Walter Phelps | Joe Deever | 1 | 1 |
| John Calvin | Bruce Ingalls | Buddy Wright | 1 | 1 |
| John Kapelos | Jack Lewis | Dr. Mustafa El Razul | 1 | 1 |
| K Callan | Florence Hackett | Lenore Mackenzie | 1 | 1 |
| Lance LeGault | Scott Perot | Chance McGill | 1 | 1 |
| Lauren Woodland | Kelley Brophy | Jamie Spontini | 1 | 1 |
| Liz Torres | Judge Linda Ruiz-Quinones | Angelita Carmen Guadalupe Cecelia Jimenez | 1 | 1 |
| Raphael Sbarge | Anthony Marciante | Will | 1 | 1 |
| Robert Costanzo | Vinnie LaRosa | Chuck Thompson | 3 | 1 |
| Robert Gossett | Edward Manley | Charles Griffin | 1 | 1 |
| Scott Kraft | Officer Gary Katleman | Biker | 1 | 1 |
| Teri Austin | Morgan Farrell | Dana Barrenger | 1 | 1 |
| Teri Hatcher | Tracy Shoe | Donna Eleese | 1 | 1 |
| Warren Frost | George Maltin | Senator Weitzman | 1 | 1 |
| Wayne Tippit | Leo Hackett | Henry Mackenzie | 5 | 1 |
| James Handy | Attorney Sumner, John Vincent | Ross Tyler | 2 | 1 |
| Jon Gries | Dr. Harold Benson | Flash McGrath, Roscoe | 1 | 2 |
| Louis Mustillo | Geoff Stachwill | Mario | 2 | 1 |
| Mimi Kuzyk | A.D.A. Marilyn Feldman | Dr. Donna Eleese | 2 | 1 |
| Pat Skipper | Russ Snyder | Luke Marlet, Tequila | 1 | 2 |
| Robert Benedetti | James Peletier | Coach | 2 | 1 |
| Stacy Edwards | Nicole Corry, Sydney Peters | Elizabeth Spokane | 2 | 1 |
| Tom Everett | Patrick Phillips | Deputy Sheriff Hazlitt | 2 | 1 |
| Willie Garson | Jay Berg | Lee Harvey Oswald, Seymour | 1 | 2 |
| H. Richard Greene | Steven Waering, Mitchell Glazer | Dr. Hardy | 3 | 1 |
| Parley Baer | Judge Parker | Dr. Rogers, Judge Shiner | 2 | 2 |
| Alan Fudge | Terrance Flaherty, Chet Seaverson | Dr. Richard Sandler | 4 | 1 |
| Alan Oppenheimer | Judge Stephen Weeks | Earl Skinner | 1 | 1 |
| Angela Paton | Sandra Vosburgh | Lottie Sammis | 1 | 1 |
| Arlen Dean Snyder | Michael McGery | Sheriff Mundy | 1 | 1 |
| David Sage | Dr. Andrew Garreth, Judge Aaron Hofheinz | Judge | 2 | 1 |
| Eriq La Salle | Kenny Webster | Bobby Lee | 1 | 1 |
| George Wyner | Aaron Voss | Ben Harris | 1 | 1 |
| James McDonnell | Dick Berenbaum | Jonathan | 3 | 1 |
| James Sutorius | Attorney Lyman Hatcher | Joe Basch | 2 | 1 |
| Jason Beghe | Detective Greg Riley | Det. Sgt. Roger Skaggs | 1 | 1 |
| Jim Haynie | Judge Nelson Dunley | Sheriff John Hoyt | 1 | 1 |
| John Apicella | Clerk, Stephan Gendler | Sheriff Dixon | 2 | 1 |
| Katherine Cortez | D.A. Georgina Tripp, Dr. Laura Ortiz | Sophie | 2 | 1 |
| Ken Foree | Leonard Mosher | The Brush | 1 | 1 |
| Kenneth Tigar | Clarence O'Malley, Mr. McClain | Ben Steiner | 2 | 1 |
| Ketty Lester | Maggie Wallace | Myrtle | 1 | 1 |
| Marjorie Monaghan | Amanda Hagan | Edie Landsdale | 1 | 1 |
| Mary Gordon Murray | Karen Alder | Leta Aider | 3 | 2 |
| Mike Genovese | Detective Riley, Sergeant Charles Bassett | Don Geno Frascotti, Mr. Collins | 2 | 2 |
| Niles Brewster | Upton Weeks | Dr. Berger | 3 | 1 |
| Robert Duncan McNeill | Mike Riley | Greg Truesdale | 1 | 1 |
| Robert Pine | Bruce Fairchild | Ted | 1 | 1 |
| Scott Lawrence | James Ray Edwards | Tibby Johnson | 1 | 1 |
| Sherman Howard | Ed Haley | Hank Rickett | 1 | 1 |
| Teddy Wilson | Reverend Jerome Seely | Ernie Tyler, Jimmy Grady | 1 | 2 |
| Valerie Mahaffey | Andrea Rossoff | Mary Greely | 1 | 1 |
| Jordan Baker | A.D.A. Marcia Fusco, D.A. Marcia Cartwright | Evy Brownfield | 5 | 1 |
| Elena Wohl | A.D.A. Ellen Harris, Fran Winston | Naomi | 3 | 1 |
| Aaron Lustig | Dr. Philip Avery | Judge Bowers | 2 | 1 |
| Dan Ziskie | Michael MacLeish | Sergeant Riley | 2 | 1 |
| James Harper | Barry Gorman, Capt. Michael Stoner | Vincent Loggia | 2 | 1 |
| Lela Ivey | Madeline Churchill | Chloe, Lucy | 1 | 2 |
| Britt Leach | Walt Brown | Vernon Coutis | 1 | 1 |
| Deborah Strang | Carol Graf | Aggie | 1 | 1 |
| Frances Bay | Marian McConnell | Millie Reynolds | 1 | 1 |
| Janet Carroll | Judge Geraldine Parker | Janie Wilson | 1 | 1 |
| Joseph Gordon-Levitt | Ricky Berg | Kyle | 1 | 1 |
| Joseph Malone | Frank Pastorini | Deputy Grimes | 1 | 1 |
| Kent Williams | David Sheppard | Collins | 1 | 1 |
| Lee Garlington | Regina Furnald | Nurse Chatam | 1 | 1 |
| Michelle Pawk | Astrid | Nicole | 1 | 1 |
| Penny Santon | Tessa Gianelli | Rita Montachelli | 1 | 1 |
| Richard Coca | Reuben Mendez | Chuey Martinez | 1 | 1 |
| Robert Lesser | Dr. Brian McKenna | Max Wushinski | 1 | 1 |
| Ron Taylor | Elliot "The Wompman" Miller | Papa David Harper | 1 | 1 |
| Susan French | Edith Lundstrum | Miz Melny Trafford | 1 | 1 |
| Timothy Carhart | John Harvey | Mac Ellroy | 1 | 1 |
| Tom La Grua | Jack Clarkson | Joey | 1 | 1 |
| Brian George | Ollie Jayaraman, Restaurant Chef | Ben | 2 | 1 |
| Tommy Morgan Jr. | Jerome Bailey | Raghead Teen #2 | 2 | 1 |
| Arthur Rosenberg | Warren Rawner | Jim McBain | 1 | 1 |
| Byrne Piven | Dr. Kenneth Cahill | Captain Colton Cotter | 1 | 1 |
| Connie Ray | Philomena Bannister | Carol Pruitt | 1 | 1 |
| Donald Hotton | Judge Richardskull | Tully Maltin | 1 | 1 |
| Edward Edwards | John Campbell | Professor Davenport | 1 | 1 |
| Erica Yohn | Crazy Katie Flaherty | Rose Montachelli | 1 | 1 |
| Fausto Bara | Father Higuera | Ruben de Guerra | 1 | 1 |
| Gregg Berger | Mitchell Noyes | Parker | 1 | 1 |
| Jack Orend | Judge Martin Adelstein | Tony | 1 | 1 |
| Judy Kain | Joanna | Waitress | 1 | 1 |
| Maggie Roswell | Mrs. Shore | Masterson | 1 | 1 |
| Noley Thornton | Emily Gelleher | Lea DeCaro | 1 | 1 |
| Paul Collins | George Lindquist, Mitch Stafford | Rob Jackson | 2 | 1 |
| Penny Fuller | Cynthia Levine | Jane Lindhurst | 1 | 1 |
| Richard Grove | Mr. Byerly, Officer Platt | Mark LeJeune | 2 | 1 |
| Richard McGonagle | Ackley Atwood-Wade | Bill Wilson | 1 | 1 |
| Robert Schuch | David Zifrin | Otto | 1 | 1 |
| Robert V. Barron | Leonard, Wino | Old Convict | 2 | 1 |
| Terri Hanauer | Professor Plump | Irene Basch | 1 | 1 |
| Bruce A. Young | Edward Rice | Butch | 1 | 1 |
| Caroline Kava | Mrs. Clark | Mrs. Thelma Beckett | 1 | 1 |
| Cherry Davis | Tonya | Thelma | 1 | 1 |
| Christopher Curry | Brian McCallister | Mrs. Takins | 1 | 1 |
| Craig Richard Nelson | U.S. Attorney Donald Kelly | The Director | 1 | 1 |
| J.W. Smith | Walt Buckner | Eddie Davies | 1 | 1 |
| Jeffrey King | Stan McCullough | Luke | 1 | 1 |
| John Shepard | Alan Ajamian | Bo Parsons | 1 | 1 |
| Kellie Overbey | Tammy Schiff | Carrie Young | 1 | 1 |
| Noble Willingham | Robert Kenyon | Gene | 1 | 1 |
| Norman Large | Attorney McDermott | Dirk Simon | 1 | 1 |
| Norman Snow | Jeremy Segal | Commander James Hartig | 1 | 1 |
| Paul Sand | Headmaster Ted Waldron | Charlie | 1 | 1 |
| Penny Peyser | Leslie Wheaton | ADA Nancy Hudson | 1 | 1 |
| Robin Frates | Laura Quinn | Elizabeth | 1 | 1 |
| Stephen Keep Mills | Dr. Weiss | Chief Donald Tipton | 1 | 1 |
| Tim Ahern | Dr. Brian Turley | Peter DeCaro | 1 | 1 |
| Tripp Law | M.P. Patterson | Nubian Guard | 1 | 1 |
| Ted Baader | Reporter #2, Reporter #4 | Billy Beaumont | 2 | 1 |
| Cal Gibson | Reporter #3, Reporter | Gardener | 3 | 1 |
| Charles Walker | Bailiff Man | Frank Willis | 1 | 1 |
| Dale Swann | Dr. Michael Allard | Bill | 1 | 1 |
| David Proval | William Mayer | Dr. Masters | 1 | 1 |
| Jarrett Lennon | Ely King | Tiny Boy | 1 | 1 |
| Joe Farago | Donald Schwartz | Cinematographer | 1 | 1 |
| John Christian Graas | Billy Slaeffer | Small Boy | 1 | 1 |
| Lewis Arquette | Customs Inspector Dodek | Father Muldooney | 1 | 1 |
| Matt Landers | Carl Sackett | Richard | 1 | 1 |
| Mike Jolly | Raider #2 | Henry / Mirror | 1 | 1 |
| Myra Turley | Mary Fitzpatrick | Delores | 1 | 1 |
| Nick Cassavetes | Richard Bertrand | Primo La Palma | 1 | 1 |
| Pat Crawford Brown | Jury Foreman #2 | Woman | 1 | 1 |
| Ralph Monaco | Witness | Hal | 1 | 1 |
| Romy Walthall | Audrey Wilkes | Cheryl Wilson | 1 | 1 |
| Roz Witt | Foreperson #2 | Waitress | 1 | 1 |
| Stephen McHattie | Gordon Reeve | Stawpah | 1 | 1 |
| Tim De Zarn | Voltaggio | Stan | 1 | 1 |
| Twink Caplan | Joujou | Hannah | 1 | 1 |
| Anthony Pena | Sergeant | Officer Talbot | 1 | 1 |
| Charles Emmett | Clarence Tane | Officer Arden | 1 | 1 |
| Duane Whitaker | Process Server | Maintenance Man | 1 | 1 |
| Ellen Gerstein | Bailiff Woman | Woman | 1 | 1 |
| Michael Bryan French | Dennis O'Connell | Jack Kerouac | 1 | 1 |
| Phyllis Lyons | Kate Delahanty | Annie Beaumont | 1 | 1 |
| Ann Walker | Emcee | Leola | 1 | 1 |
| Cheryl Francis Harrington | Sharon Barrett | Young Woman | 1 | 1 |
| Christopher J. Keene | Wildcat | Doctor | 1 | 1 |
| Doug MacHugh | Walter McDonough | Moe | 1 | 1 |
| Mary Pat Gleason | Edna Girth | Mrs. Thompson | 1 | 1 |
| Michael Griswold | Judge Connelly | Dr. Samuel | 1 | 1 |
| Jonathan Hogan | Ronald Price | Gus Vernon | 1 | 1 |
| Mik Scriba | Guard Bob | Coach Donnelly | 1 | 1 |
| Robert MacKenzie | Sy Modell | Vampire | 1 | 1 |
| Steve Carlisle | Avery Phipps | Pollack | 1 | 1 |
| Susan Ann Connor | Dr. Julia Robbins | Naval Admiral | 1 | 1 |
| E.R. Davies | Jack Sterns | Sheriff Jake Foley | 1 | 1 |
| Frank Novak | Coroner | Lou | 1 | 1 |
| Philip Persons | Dr Ernest Keller | Coroner | 1 | 1 |
| Ralph Bruneau | Frank Swayze | Head Steward | 1 | 1 |
| Barbara Tarbuck | Dr. Nagel | Esther | 1 | 1 |
| Cary J. Pitts | Jury Foreman | Deputy Herman | 1 | 1 |
| Jack Jozefson | Arrest Detective | Officer Hudson | 1 | 1 |
| John Hostetter | William Forrester | Burt | 1 | 1 |
| R. Leo Schreiber | Juror #2 | Townsman | 1 | 1 |
| Charlie Holliday | Foreperson | Sheriff Otis | 1 | 1 |
| Don Keith Opper | Kevin Garwood | Crooner | 1 | 1 |
| Edmund L. Shaff | Edward Lewis | Minister | 1 | 1 |
| Marion Dugan | Jury Foreperson | Lila Pierce | 1 | 1 |
| Kevin Page | Bookworm #4 | Young Doctor | 1 | 1 |
| Scotch Byerley | Foreman | Clerk | 1 | 1 |
| Hope Marie Carlton | Marie | Woman #1 | 1 | 1 |
| James Medina | Alejando Cruz | Carlos | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.