All 138 actors in both L.A. Law and The West Wing
138 actors have appeared in both L.A. Law and The West Wing, across 325 episodes. The most-credited is Bruce Kirby, D.A. Bruce Rogoff in L.A. Law and Barney Lang in The West Wing.
| Actor | In L.A. Law | In The West Wing | Eps | Eps |
|---|---|---|---|---|
| Bruce Kirby | D.A. Bruce Rogoff | Barney Lang | 13 | 1 |
| Steven Eckholdt | Patrick Flanagan, Mark Cleland | Doug Westin | 9 | 5 |
| Stephen Root | Attorney Brandon McCafferty, Ferret | Bob Mayer | 4 | 9 |
| George Coe | Judge Wallace R. Vance | Senator Howard Stackhouse | 8 | 2 |
| Earl Boen | Judge Walter L. Swanson | Paulson | 8 | 1 |
| Felton Perry | Detective Lester Tuttle | Jerry | 6 | 2 |
| Carl Lumbly | Earl Williams | Jeff Breckenridge | 6 | 1 |
| Michael Holden | D.A. George Handleman | Network President | 6 | 1 |
| Adam Arkin | Richard Kendall | Dr. Stanley Keyworth | 2 | 4 |
| Michael O'Neill | Robert Moran | Secret Service Agent Ron Butterfield | 1 | 14 |
| Thomas Kopache | Dr. Raymond Miles | Bob Slatterly | 1 | 14 |
| Gregory Itzin | D.A. Jack Angeletti | State Department Representative | 3 | 1 |
| Richard Fancy | Norman Klein | Congressman | 3 | 1 |
| Steven Culp | Dr. Wayland Lottera | Speaker of the House Jeff Haffley | 1 | 9 |
| Gregory Alan Williams | Ellis Cole | Robbie Mosley | 1 | 8 |
| Jimmy Smits | Victor Sifuentes | Matthew Santos | 2 | 1 |
| Ron Canada | David Ellis | Theodore Barrow | 2 | 10 |
| CCH Pounder | Judge Roseann Robin | Deborah O'Leary | 4 | 1 |
| Stanley Kamel | Mark Gilliam | Stanley | 4 | 1 |
| H. Richard Greene | Steven Waering, Mitchell Glazer | Robert Royce | 3 | 6 |
| Carmen Argenziano | Attorney Neil Robertson | Leonard Wallace | 5 | 1 |
| Donald Moffat | Judge Lawrence O'Neil | Talmidge "Tal" Cregg | 1 | 1 |
| James Cromwell | Attorney Hutton | President D. Wire Newman | 1 | 1 |
| Nicholas Pryor | Dr. Louis Birch | Special Prosecutor Clement Rollins | 3 | 1 |
| Steven Gilborn | Robert Richards | Rep. Paul Dearborn | 3 | 1 |
| Dakin Matthews | Marshall Hygate | Simon Blye | 4 | 1 |
| Lisa Edelstein | Francine Flicker | Brittany "Laurie" Rollins | 1 | 5 |
| Ryan Cutrona | FBI Agent O'Hearn | CIA Director George Rollie | 1 | 6 |
| Christian Slater | Andy Prescott | Lieutenant Commander Jack Reese | 1 | 3 |
| Jeff Perry | Jonah Burgee | Burt Ganz | 3 | 1 |
| Robert David Hall | Judge Myron Swaybill | David Nessler | 3 | 1 |
| Terry O'Quinn | Nick Moats | General Nicholas Alexander | 1 | 7 |
| Charley Lang | Robert Alden | Congressman Matt Skinner | 2 | 3 |
| Sam Anderson | D.A. Bill Graphia | John LaSalle | 4 | 1 |
| Basil Hoffman | Baldred Townsend | Congressman | 1 | 1 |
| Erick Avari | Dr. William Harris | Pakistani Ambassador Habib | 1 | 1 |
| John de Lancie | Mark Chelios | Al Kiefer | 1 | 2 |
| John Diehl | Kevin Delahanty, Tim | Larry Claypool | 2 | 2 |
| Kurt Fuller | Clifford Gild, Ed Freeling, Stan Nussbaum | SitRoom Civilian Advisor | 3 | 2 |
| Robert Knepper | George "Georgia" Buckner, David Orcott | Morgan Ross | 3 | 1 |
| Tim Guinee | Officer Brian Chisolm | Steve Laussen | 4 | 1 |
| Tom Everett | Patrick Phillips | Agent Charles Frost | 2 | 3 |
| Jordan Baker | A.D.A. Marcia Fusco, D.A. Marcia Cartwright | Dr. Cynthia Sayles | 5 | 1 |
| Natalija Nogulich | Attorney Lorraine Korshak, Helen Keris | Israeli Ambassador Shira Galit | 2 | 3 |
| Richard Riehle | Roger Beekman, Edmund Clancy | Officer Jack Sloan | 3 | 2 |
| James Handy | Attorney Sumner, John Vincent | Rep. Joseph Bruno | 2 | 2 |
| Lee Garlington | Regina Furnald | Alana Waterman | 1 | 3 |
| Aaron Lustig | Dr. Philip Avery | Jerry Graham | 2 | 1 |
| Annie Corley | Phyllis Wodjack | Mary Marsh | 1 | 2 |
| Armin Shimerman | Ernie Frye, Timothy Wiseboro | Richard III | 2 | 1 |
| Bernard White | Conrad Peters | Dr. Essan Mohebi | 2 | 1 |
| Deborah May | Carla Stritch | Janet | 2 | 1 |
| Gary Carlos Cervantes | Weaselley Prisoner | Bobby | 2 | 1 |
| Randy Oglesby | Dr. Kendall Gratz, Leonard Knipp | Alcoholic Politician | 2 | 1 |
| Robert Picardo | Joe Dumphy | E. Bradford Shelton | 2 | 1 |
| Christian Clemenson | Pomerantz | Evan Woodkirk | 1 | 1 |
| Matt McCoy | Rick Turner | Congressman Tom Landis | 1 | 1 |
| Scott Michael Campbell | Brian Conley | Donald Dolan | 1 | 1 |
| George Cheung | Ronald Chow | Chinese Ambassador Ling-Po | 1 | 2 |
| Jim Jansen | Geoffrey Bowers, Jerry Manoogian | Bill Fisher | 2 | 1 |
| Ken Lerner | Attorney Peter Duble | Congressman Marino | 2 | 1 |
| Mark Hutter | Ken Feldman | Rep. Erickson | 2 | 1 |
| David Rasche | David McCoy | Carl Everett | 2 | 1 |
| George Wyner | Aaron Voss | Congressman Simmel | 1 | 1 |
| Gina Hecht | Dianna Dorian | Julie | 2 | 1 |
| John Apicella | Clerk, Stephan Gendler | Ralph Gish | 2 | 1 |
| Marcelo Tubert | Dr. David Koenig | Palestinian Prime Minister Saeb Mukarat | 1 | 3 |
| Ray Wise | D.A. Walter Platt | Governor Tillman | 2 | 1 |
| Terry Beaver | Norman Patton | Dr. Lee Voight | 1 | 1 |
| Philip Baker Hall | Tom Baker | Senator Matt Hunt | 1 | 2 |
| Željko Ivanek | Joel Lassen | Steve Atwood | 1 | 2 |
| Alanna Ubach | Christine Rowan | Celia Walton | 1 | 1 |
| James Morrison | Walter Phelps | Colonel Jessie Weiskopf | 1 | 1 |
| Valerie Mahaffey | Andrea Rossoff | Tawny Cryer | 1 | 1 |
| Bruce French | Brian Mellor | Bill Stark | 2 | 1 |
| John Bedford Lloyd | Duane Butler, Mitch Gelleher | Lloyd Russell | 2 | 1 |
| Tony Plana | Roberto Rivera | Mickey Troop | 1 | 2 |
| Bill Cobbs | Webb Johnson | Alan Tatum | 1 | 1 |
| Bruce Gray | Alex Wayne | Otis | 1 | 1 |
| Charles Walker | Bailiff Man | Oncologist | 1 | 1 |
| Clyde Kusatsu | Judge T.S. Masuoka | Joe | 1 | 1 |
| David Dunard | Detective Sergeant Horace Flynt | Alcoholic Politician | 1 | 1 |
| David Spielberg | Judge Herbert Foster Reeves | Congressman | 1 | 1 |
| Dinah Lenney | Receptionist | Mary Klein | 1 | 1 |
| Kenneth Tigar | Clarence O'Malley, Mr. McClain | Congressman Gladman | 2 | 1 |
| Madison Mason | Peter Osteen | Admiral Hackett | 1 | 1 |
| Michael Tomlinson | Ed Weisberg | Republican Congressman | 1 | 1 |
| Nick Searcy | Paschal Keck | Nate Singer | 1 | 1 |
| Pat Skipper | Russ Snyder | Senator Jimmy Hoebuck | 1 | 1 |
| Paul Collins | George Lindquist, Mitch Stafford | Senator Sam Wilkinson | 2 | 1 |
| Scott Lawrence | James Ray Edwards | Congressional Staffer | 1 | 1 |
| Steven Flynn | Anton D'Arcy, Ellis Agnew | Mark Brookline | 2 | 1 |
| John Bennett Perry | Richard Lauderbach | Bill Wakefield | 1 | 1 |
| John Kapelos | Jack Lewis | Seymour Little | 1 | 1 |
| Margot Rose | Cecily | Portia Colgrave | 1 | 1 |
| Michael Cavanaugh | Paul Richardson | Pharmaceutical Executive | 1 | 1 |
| Raynor Scheine | Lenny Varns | Homeless Man | 1 | 1 |
| Richard McGonagle | Ackley Atwood-Wade | Senator Warren | 1 | 1 |
| Ted Marcoux | Sam Corcoran | Major Tate | 1 | 1 |
| Henry G. Sanders | Judge Andrew Robertson | Ambassador Tiki | 2 | 1 |
| Al Fann | Judge George Syler | Rep. Joe Willis | 1 | 1 |
| Allan Wasserman | Dr. Stewart | Donald McKittridge | 1 | 1 |
| Castulo Guerra | Jaime Rodriguez | Ed Garcia | 1 | 1 |
| Christopher Curry | Brian McCallister | Colonel Lee | 1 | 1 |
| Don McManus | Dr. James Rissler | Greg Summerhays | 1 | 1 |
| Don S. Davis | Judge Richard Bartke | Reverend Don Butler | 1 | 1 |
| François Giroday | Dr. Daniel Wolin | French Ambassador | 1 | 1 |
| Gibby Brand | Nelson Quinn | Adam Kent | 1 | 1 |
| Herb Mitchell | Nicholas Patsos | Justice | 1 | 1 |
| Iqbal Theba | Atman Chandra | Indian Ambassador | 1 | 1 |
| James Pickens, Jr. | Joseph Russell | Washington D.C. Mayor | 1 | 1 |
| Jeffrey DeMunn | Peter Reynolds | Kenneth Sean O'Neal | 1 | 1 |
| Lawrence Pressman | Richard Hollis | Ken Cochran | 1 | 1 |
| Linda Gehringer | Kate Recklaw | Jennifer Lydell | 1 | 1 |
| Miguel Sandoval | Alvaro Campos | Victor Campos | 1 | 1 |
| Mitchell Ryan | Duncan Young | Senator Roland Pierce | 1 | 1 |
| Nicholas Cascone | Alan Barbara | Loomis | 1 | 1 |
| Paul Eiding | Ben Slaeffer | Labor Lawyer | 1 | 1 |
| Robert Curtis Brown | Paul Jameson | Jamie Hotchkiss | 1 | 1 |
| Tony Amendola | Bartender | Qumari U.N. Ambassador Ali Nissir | 1 | 1 |
| Amanda Carlin | Samantha Hagen | Hillary Toobin | 1 | 1 |
| David Proval | William Mayer | Rabbi Glassman | 1 | 1 |
| John Capodice | Val Ventresca | Lenny | 1 | 1 |
| John F. O'Donohue | Foreperson | Mr. Koveleskie | 1 | 1 |
| Kenneth Kimmins | Dr. Bradley Lawrence | General Stanley | 1 | 1 |
| Leon Russom | Matthew Wilton | Network President | 1 | 1 |
| Stephen Tobolowsky | Dr. Michael Segal | Dr. Max Milkman | 1 | 1 |
| Vernée Watson | Wilma Russ | Nurse | 1 | 1 |
| Wayne Duvall | Chris Flanagan | Bill Parsons | 1 | 1 |
| Matthew Glave | Robbie Richards | Scott Holcomb | 1 | 1 |
| Michael Bryan French | Dennis O'Connell | Hospital Administrator | 1 | 1 |
| Peter Michael Goetz | Dr. Robert Woolf | Paul Hackett | 1 | 1 |
| Adrian Sparks | Dr. Mitchell Lewen | Dr. Wexler | 1 | 1 |
| Edmund L. Shaff | Edward Lewis | Bill Horton | 1 | 1 |
| Richard Penn | Richard Williamson | Blakely | 1 | 1 |
| Wren T. Brown | Marshall #2 | Man in Meeting | 1 | 1 |
| Bennet Guillory | Judge Walter Emerick | Rep. Jackson | 1 | 1 |
| Michael Bofshever | Phil | Kagan | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.