M*A*S*H ran for 11 seasons and became one of the most beloved TV shows in American history. Part of what made it so special was the incredible parade of talented actors who passed through the 4077th before becoming household names.
Some of these guest stars went on to win Oscars, headline blockbuster movies, and star in their own hit shows. You might be surprised just how many famous faces got their start, or made a memorable stop, at the M*A*S*H camp.
1. Leslie Nielsen as Colonel Buzz Brighton
Long before he made audiences howl in Airplane! and The Naked Gun, Leslie Nielsen played Colonel Buzz Brighton in the Season 1 episode “The Ringbanger.” His character was a glory-hungry officer who cared more about medals than lives, a far cry from the bumbling comedic roles that made him a legend.
Watching Nielsen play it completely straight makes the performance even more fascinating in hindsight. Fans who only know him as Frank Drebin would barely recognize him here.
2. Ron Howard as Tommy
Before he was Richie Cunningham on Happy Days and long before he became one of Hollywood’s most celebrated directors, Ron Howard showed up at the 4077th. He played Tommy, an underage Marine, in the Season 1 episode “Sometimes You Hear the Bullet,” one of the series’ most emotionally gut-punching episodes.
Howard was a teenager at the time, and his performance held its own alongside the regular cast. His natural warmth came through even in such a brief role.
3. Patrick Swayze as a Soldier with Leukemia
Years before he swept audiences off their feet in Dirty Dancing and Ghost, Patrick Swayze appeared in the Season 9 episode “Blood Brothers” as a terminally ill soldier diagnosed with leukemia. His performance was understated and heartbreaking, showing a vulnerability that hinted at the dramatic depth he would later bring to the big screen.
Most fans watching reruns today do a double take when they spot him. It is one of M*A*S*H’s most bittersweet casting moments.
4. Laurence Fishburne in Season 10
Laurence Fishburne was still a teenager when he appeared in the Season 10 episode “The Tooth Shall Set You Free.” He had already filmed Apocalypse Now by then, but mainstream recognition was still years away. His M*A*S*H appearance is a fun piece of trivia for fans of The Matrix who never expected to find Morpheus in the Korean War.
Even in a small role, Fishburne carried himself with a quiet confidence that was hard to miss.
5. John Ritter as a Wounded Soldier
John Ritter had the kind of natural charm that lit up any room, and his brief appearance in the Season 2 episode “Deal Me Out” is no exception. He played a wounded soldier, a small role that came just before his breakout as Jack Tripper on Three’s Company made him one of TV’s biggest stars.
Looking back, it is almost surreal to see him here in such a serious setting. His comedic genius was clearly just beneath the surface, waiting to explode.
6. Shelley Long as a Nurse
Shelley Long played a nurse who went on a date with Hawkeye in a Season 8 episode, and her sharp wit was already on full display. Cheers was still a few years away, but anyone watching closely could see the same intelligence and comedic timing that would make Diane Chambers an all-time great TV character.
Her chemistry with Alan Alda crackled right off the screen. It is a small but memorable visit that hardcore M*A*S*H fans love to bring up.
7. Teri Garr as Lieutenant Suzanne Marquette
Teri Garr actually appeared in M*A*S*H twice, playing Lieutenant Suzanne Marquette in both “The Sniper” (Season 2) and “Our Finest Hour” (Season 7). That kind of return visit says something about the impression she made.
She brought a breezy confidence to the role that felt completely natural.
Garr would go on to shine in Young Frankenstein and earn an Oscar nomination for Tootsie. Her M*A*S*H episodes serve as a charming early chapter in a genuinely impressive career.
8. George Wendt as a Patient with a Drinking Injury
Norm Peterson showing up at the 4077th sounds like a comedy sketch, but George Wendt actually appeared in the Season 11 episode “Trick or Treatment” as a patient who injured himself while drinking. It is a role that feels almost too perfectly suited to the actor, and he plays it with easy, self-deprecating humor.
Cheers was already on the air when this episode aired, so audiences likely got a kick out of seeing their favorite bar regular in a very different kind of fix.
9. Andrew Dice Clay as Corporal Hrabosky
Before Andrew Dice Clay became one of the most controversial comedians of the late 1980s, he showed up in the same Season 11 episode as George Wendt, playing a loud, drunken Marine named Corporal Hrabosky in “Trick or Treatment.” The role was small but perfectly cast.
Clay’s abrasive energy came through loud and clear even in a TV drama. Spotting him here feels like finding a hidden Easter egg that only pop culture obsessives would fully appreciate.
10. Ned Beatty as a Chaplain
Ned Beatty had already appeared in Deliverance before his Season 4 M*A*S*H appearance in “Dear Peggy,” where he played a chaplain offering spiritual comfort to the troops. His ability to convey warmth and sincerity made him a natural fit for the role, and he brought a grounded humanity to every second of screen time.
Beatty would later earn an Oscar nomination for Network and pop up in Superman. His M*A*S*H visit remains one of the show’s quieter, more touching guest performances.
11. James Cromwell as Captain Leo Bardonaro
James Cromwell is a towering presence in every sense of the word, and his Season 6 appearance as Captain Leo Bardonaro in “Last Laugh” proved he could hold his own in any ensemble. He was still a character actor building his resume at the time, decades before Babe and L.A.
Confidential made him a recognizable name.
Cromwell has always excelled at roles with quiet moral weight, and this early M*A*S*H turn showed exactly why directors kept calling him back throughout a long and varied career.
12. Ed Begley Jr. in Season 8
Ed Begley Jr. appeared in the Season 8 premiere episode “Too Many Cooks” before landing his long-running role as Dr. Victor Ehrlich on St. Elsewhere. He brought a sincere, slightly awkward energy to his M*A*S*H appearance that felt completely in tune with the show’s tone.
Begley Jr. has always had a gift for making even small roles feel meaningful. His appearance here is a nice footnote in a career that spans decades and touches nearly every corner of American television.
13. Pat Morita as Captain Sam Pak
Pat Morita appeared twice in Season 2 as Captain Sam Pak of the Republic of Korea Army, bringing a quiet dignity to a role that could easily have been a throwaway part. His performances added a layer of cultural authenticity and depth that the show’s writers clearly appreciated enough to bring him back.
A decade later, he became globally beloved as Mr. Miyagi in The Karate Kid. Wax on, wax off, and a couple of M*A*S*H episodes, too.
14. Blythe Danner as Lieutenant Carlyle Breslin
Blythe Danner brought a quiet sophistication to the Season 4 episode “The More I See You,” playing Lieutenant Carlyle Breslin, a former love interest of Hawkeye’s. The episode is one of the more emotionally complex romantic stories the show ever told, and Danner matched Alan Alda beat for beat throughout.
She went on to acclaimed work in Meet the Parents and Will and Grace, among many others. Gwyneth Paltrow’s mom, as it turns out, was always this good.
15. Susan Saint James in Season 8
Susan Saint James was already well known for McMillan and Wife when she guest-starred in the Season 8 episode “War Co-Respondent” as a war reporter. Her natural screen charisma translated perfectly into a world where the stakes were life and death, and she held her own against the show’s seasoned regulars without breaking a sweat.
The episode explored how journalists navigated the chaos of wartime, giving Saint James real dramatic material to work with. She made every moment count.
16. Joan Van Ark as Nurse Lieutenant Erika Johnson
Joan Van Ark played Nurse Lieutenant Erika Johnson in the Season 2 episode “Radar’s Report,” delivering a performance that was warm and memorable in a limited amount of screen time. She was still building her TV career at that point, and M*A*S*H gave her a solid showcase.
She would later become a soap opera icon on Knots Landing, a role she played for over two decades. Her M*A*S*H appearance feels like a fascinating first chapter of a long and dramatic story.
17. Robert Alda as Major Borelli
There is something wonderfully meta about Robert Alda appearing on M*A*S*H as a visiting surgeon named Major Borelli, given that his son Alan Alda was the show’s star. Robert appeared twice in the role, and the real-life father-son dynamic added an extra layer of warmth to their scenes together.
Robert Alda was a well-respected stage and screen actor in his own right, known for playing George Gershwin in the 1945 film Rhapsody in Blue. Having both Aldas on set must have been something special.
18. Harry Morgan as General Steele
Harry Morgan’s path on M*A*S*H is one of TV history’s most entertaining stories. He first appeared in Season 3 as General Bartford Hamilton Steele, a completely unhinged commanding officer in the episode “The General Flipped at Dawn.” His performance was wildly over the top, and audiences loved it.
The producers loved him so much that they brought him back as an entirely different character, Colonel Sherman T. Potter, who became a series regular and fan favorite.
Not many actors can claim that kind of a career pivot on the same show.
19. Jeffrey Tambor on M*A*S*H
Jeffrey Tambor made an early career appearance on M*A*S*H before going on to become one of television’s most celebrated character actors. His roles in Arrested Development and Transparent would eventually earn him widespread critical praise, but his M*A*S*H visit came when he was still figuring out his place in Hollywood.
Tambor has always excelled at playing men who are slightly out of their depth, and that quality was clearly present even in his early work. Catching him here is a real treat for fans of his later career.
20. Joe Pantoliano as a Soldier
Joe Pantoliano, later known to the world as Cypher in The Matrix and Ralph Cifaretto in The Sopranos, appeared in a M*A*S*H episode titled “Identity Crisis” as a soldier caught up in a case of mistaken identity. Even in a small role, Pantoliano’s sharp energy and quick instincts were impossible to ignore.
He has always had a knack for playing characters who are just a little bit unpredictable, and that quality shines through here. Spotting Joey Pants in the Korean War is the kind of surprise that makes classic TV reruns so rewarding.