All 105 actors in both JAG and The Practice
105 actors have appeared in both JAG and The Practice, across 394 episodes. The most-credited is Richard McGonagle, Capt. Richard Carey in JAG and Judge Patrick Wilcox in The Practice.
| Actor | In JAG | In The Practice | Eps | Eps |
|---|---|---|---|---|
| Richard McGonagle | Capt. Richard Carey | Judge Patrick Wilcox | 2 | 16 |
| James Pickens, Jr. | Commander Wallace Burke | Detective Mike McKrew | 1 | 15 |
| Paul Collins | SecNav Alexander Nelson | Attorney Hendrick Walton | 14 | 1 |
| Bruce Davison | Dr. Morris Sperling | Scott Wallace | 1 | 9 |
| Steven Culp | Special Agent Clayton Webb | A.D.A. Emmanuel Kupcheck, Attorney Alldredge | 8 | 2 |
| Jennifer Savidge | Cmdr. Amy Helfman | Lori Healy | 6 | 1 |
| Isabella Hofmann | Meredith Cavanaugh | Kate Littlefield | 4 | 2 |
| Natalija Nogulich | Diamond Saleswoman | Judge Stevens | 1 | 4 |
| Steven Flynn | Chaplain Oliver Stephens | D.A. Martin Toomey | 1 | 3 |
| David Andrews | Major General Gordon "Biff" Cresswell, USMC | Judge Wilbur Stucky | 1 | 2 |
| Ryan Cutrona | General Piper | Dr. Patrick Fine, FBI Coroner George Wall | 1 | 5 |
| Cliff DeYoung | Chuck DePalma | Attorney Randall West | 3 | 3 |
| Clyde Kusatsu | Senator Theodore Fujiwara, Capt. Morimoto | Judge Stephen Chin | 2 | 2 |
| John Wesley | Darren Oakley | Father Stanley Joley | 1 | 1 |
| Michael O'Neill | Major General Harold Rossing | Judge Robert Temple | 1 | 1 |
| Vasili Bogazianos | Pappas | A.D.A. Coffee | 1 | 1 |
| James Karen | Former COMSUBPAC, Senator Barrington | Judge M. Knapp | 2 | 3 |
| Bernard White | Sadik Fahd | Ahmad Sharif | 2 | 1 |
| Carmen Argenziano | Colonel Matthew O'Hara | Attorney Horace Wright, Principal Gilbert | 1 | 2 |
| Jeffrey Dean Morgan | Wally (CIA Technician), Weapons Officer | Daniel Glenn | 2 | 1 |
| John Finn | Major Klein | Detective Henry Doaks | 1 | 2 |
| Alan Dale | Tom Morrow | Judge Robert Brenford | 2 | 2 |
| John Walcutt | Tom Johnson, Caleb Farmer | Jonathan Macklin | 3 | 2 |
| Patti Allison | Marge | Maureen Saunders | 1 | 4 |
| Bill Bolender | CAPT "Skipper" Ross | Executioner | 2 | 1 |
| Bonnie Root | Lt. Sandy Winters | Jan Carlson | 1 | 1 |
| Jack Stehlin | Edward Hardy | Dr. Wolfman, Halberry | 2 | 2 |
| Ken Lerner | James Reid | Rabbi Sam Benzig | 1 | 1 |
| Lawrence Monoson | Detective Axelrad | PDA John Seymour | 1 | 2 |
| Mark Moses | Deke Carson / Earl Ticktin | Henry Winslow | 1 | 1 |
| Tammy Townsend | LT Clarize Boyette | Rachel Reynolds | 1 | 1 |
| Joe Marinelli | Messers | Rocco | 1 | 2 |
| Kevin Dunn | RADM Al Brovo | Bill Munce | 2 | 1 |
| Leon Russom | Lt. General Anthony Manzarek | Brian Kearns | 1 | 2 |
| Stephen Markle | Kevin Lee | Forensic Pathologist | 2 | 1 |
| Zach Grenier | Colonel Boyett | Detective R. Larson | 1 | 2 |
| Steve Rankin | Admiral Mark Tucci, Lieutenant Stans | Stephen Jamison | 2 | 3 |
| Alex Carter | CDR Thomas Risnicki | John Doe | 1 | 1 |
| Chris Ellis | Detective Kush | Donald Blane | 1 | 1 |
| Conor O'Farrell | Gen. Nathan Behnke | D.A. Albert Bellamy | 1 | 1 |
| Mark Sheppard | Deputy Director of Air Operations / Young Evan Parker | Eddie Wicks | 1 | 1 |
| Michael Fairman | CIA Director Norman Watts | Governor's Council Richmond, School Board President Harold Shaw | 2 | 2 |
| Tracy Middendorf | Mariel Reese | Jennifer Cole | 1 | 3 |
| Dey Young | Commander Candace Carson | Elena Wharton | 1 | 2 |
| Michael Brandon | Col. Hegstetter | D.A. Adam Dawson | 1 | 2 |
| Michael J. Harney | Barman, Naval Judge | A.D.A. Walt Frazier | 2 | 1 |
| Michael Spound | Lt. Cmdr. Tim Bryant | Michael Berenson | 1 | 2 |
| Spencer Garrett | First Lieutenant Vince Boone | A.D.A. Carter | 1 | 2 |
| David Doty | Dr. Roland | Foreman, Judge Robert Bournes | 1 | 2 |
| Drew Snyder | Judge Talbert | Arnold Minor | 1 | 1 |
| Jordan Baker | CAPT Laurie Layton | Judge Cheryl Robbins | 1 | 1 |
| Rick Hall | Air Boss | Officer Trimble | 2 | 1 |
| Robert Pine | Capt. Childs | John Monahan | 1 | 1 |
| Ivar Brogger | Commander Brent Tranic | Kevin Stadler, John Blair | 1 | 3 |
| Elyse Donalson | Nurse #2 | Clerk | 2 | 1 |
| Tanya Memme | ZNN Anchorwoman | Amy Wyatt, Reporter #2 | 1 | 2 |
| Tim Lounibos | Lt. Peter Yuen | Dr. Michael Wang | 1 | 2 |
| Tim Quill | LT Mason Painter | Arvin Grayson | 2 | 1 |
| J. August Richards | Seaman Bernard | Michael Anderson | 1 | 1 |
| Jason Brooks | First Lieutenant John Ditullio | A.D.A. Adam Morris | 1 | 1 |
| Lou Richards | Captain Costain | ADA Tom Connolly | 1 | 1 |
| Michael Chieffo | Forensics Specialist | Chris Varley | 1 | 1 |
| Andrew J. Robinson | Admiral Thomas Kly | Edmond Solomon | 1 | 1 |
| Andy Umberger | Dr. Pomerantz | A.D.A. Virgil Johnson | 1 | 1 |
| Benjamin Brown | Radar Controller, Stiles | Officer | 2 | 1 |
| Betsy Brandt | Leslie Rosenbaum | Lynda Hobbs | 1 | 1 |
| Brenden Jefferson | Street Kid | Marshall Bagnell | 1 | 1 |
| Daniel Zacapa | Bernardo | Mr. Tabbitt | 1 | 1 |
| Diane DiLascio | Tina Leigh | Karen | 1 | 1 |
| Dick DeCoit | Captain Minnis | Officer Lindstrom | 1 | 1 |
| Gregory Balaban | tbd | Glenn, Reporter #3 | 1 | 2 |
| Jody Wood | Postal Driver | Joe McLaughlin | 1 | 1 |
| Marcelo Tubert | Admiral Picato | Darryl Stanton | 1 | 1 |
| Maria del Mar | Alicia Montes | A.D.A. Cindy Lichtman | 1 | 1 |
| Richard Cox | Mr. Handy | Attorney Stuart Miller | 1 | 1 |
| Adam Clark | Sgt. Munson | Officer Michael Clarke | 1 | 1 |
| Ben Lemon | CDR Holbarth | Dr. Richard Eigher | 1 | 1 |
| Christopher Darga | COB | Officer | 1 | 1 |
| Kimberly Scott | NCIS Agent Lisa Viola | Principal Paula Richardson | 1 | 1 |
| Mike Genovese | Pops Munchak | Officer Carl Smitko | 1 | 1 |
| Tom Amandes | CDR John Flagler | Robert Wakefield | 1 | 1 |
| Allan Wasserman | CAPT Millstein | James Keplar | 1 | 1 |
| Butch Hammett | Cmdr. Phil Zuzello | Walter Cole | 1 | 1 |
| Christian Meoli | Petty Officer Dave Mooney | Charles Best | 1 | 1 |
| David Ackert | Wahib Shawaf | Officer Randy Schmidt | 1 | 1 |
| Douglas Spain | PO Lewis Cumpeano | Miguel Javalera | 1 | 1 |
| Drew Pillsbury | Captain Cameron | Detective Frank Lopes | 1 | 1 |
| John Gavigan | Judge Loftness | Mr. Carson | 1 | 1 |
| Olivia Virgil White | Woman in Safe House | Judge Jane Wall | 1 | 1 |
| Shashawnee Hall | Corporal Green | Officer Horton | 1 | 1 |
| Steve Ryan | VADM Holt | Detective Alan Slezak | 1 | 1 |
| Tony Crane | Lt. Brian Nelson | Daniel Carrington | 1 | 1 |
| Jack Shearer | George Tennyson | Mr. Johnson | 1 | 1 |
| William Wellman, Jr. | Bob Xavier | Ted Barrington | 1 | 1 |
| James Ingersoll | Clerk | Mr. Edward Harrelson | 1 | 2 |
| Richard Vidan | Terrorist Group Leader | Warden John Kauzer, Warden Roberts | 1 | 2 |
| Henry LeBlanc | Captain Jones | Detective Foster | 1 | 1 |
| Paul Vincent O'Connor | Army General Zachary Wolfe | Attorney Milton Cados | 1 | 1 |
| John Valdetero | Senior Member | Police Officer | 1 | 1 |
| Ramsey Malouky | Lt. Ozden | Bill Habib | 1 | 1 |
| Jamison Yang | Anesthesiologist | Co-Worker | 1 | 1 |
| Lyman Ward | Roger Morris | Mr. Hayes | 1 | 1 |
| Richard Penn | Judge Eberhardt | Judge Wald | 1 | 1 |
| Tom Urich | VADM Bill Clancy | George Rapson | 1 | 1 |
| Anne Betancourt | Muslim Tribunal Member | Pilar Guzman | 1 | 1 |
Cast data from TVmaze, licensed CC BY-SA 4.0.