The 40 Longest-Running American TV Shows of All Time
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  • Post published:14/04/2021
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“Is that still on?” you’ll hear people ask about one of your favorite shows. Amazingly enough, yes, some of the longest-running American TV shows of all time are still going strong, cranking out more episodes than the vast majority of series will ever come close to. Our list of these overachievers is comprised of shows like Grey’s Anatomy that remain on the air, along with series that aired their final episode decades ago. Either way, you’ll be blown away to discover just how many hours of television these iconic shows are responsible for.

To keep things from spinning too wildly out of control, we’re focusing on primetime, scripted, non-anthology series—with apologies to the soap operas, news programs, and late-night shows that have redefined staying power. With that in mind, take a look at our ranking of the 40 longest-running American TV shows ever made, from least to most episodes. And for more television nostalgia, revisit these 20 Beloved TV Shows You Won’t Believe Are 20 Years Old.

40

M*A*S*H (1972-1983)

still from mashstill from mash
20th Television

256 episodes

And for more shows that came to a memorable conclusion, these are The 25 Best TV Series Finales of All Time.

39

Married… with Children (1987-1997)

married with childrenmarried with children
Sony Pictures Television

259 episodes

38

King of the Hill (1997-2009)

king of the hillking of the hill
Disney–ABC Domestic Television

259 episodes

And for some less enduring series, check out these 20 ’90s TV Shows You’ve Completely Forgotten About.

37

The Jack Benny Program (1950-1965)

the jack benny programthe jack benny program
Prime Video

260 episodes

36

Murphy Brown (1988-2018)

murphy brownmurphy brown
Warner Bros. Television Distribution

260 episodes

And for more shows that came back to little fanfare, here are The 13 Most Disappointing TV Reboots of All Time.

35

Mama (1949-1956)

still from mamastill from mama
PR Studios

261 episodes

34

NYPD Blue (1993-2005)

nypd bluenypd blue
20th Television

261 episodes

33

Two and a Half Men (2003-2015)

two and a half mentwo and a half men
Warner Bros. Domestic Television Distribution

262 episodes

And for more series that continued on without their leads, check out these 13 TV Shows That Lost Their Stars.

32

NCIS: Los Angeles (2009-)

ncis los angelesncis los angeles
CBS Television Distribution

262 episodes

31

Frasier (1993-2004)

still from frasierstill from frasier
CBS Television Distribution

264 episodes

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30

Murder, She Wrote (1984-1996)

murder she wrotemurder she wrote
NBCUniversal Television Distribution

264 episodes

29

Perry Mason (1957-1966)

perry masonperry mason
CBS Television Distribution

271 episodes

28

The Beverly Hillbillies (1962-1971)

the beverly hillbilliesthe beverly hillbillies
CBS Television Distribution

274 episodes

27

The Donna Reed Show (1958-1966)

the donna reed showthe donna reed show
Screen Gems

275 episodes

26

Cheers (1982-1993)

still from cheersstill from cheers
ViacomCBS Domestic Media Networks

275 episodes

25

Dragnet (1951-1959)

still from dragnetstill from dragnet
NBC

276 episodes

24

The Big Bang Theory (2007-2019)

the big bang theorythe big bang theory
Warner Bros. Television Distribution

279 episodes

23

Hawaii Five-O (1968-1980)

hawaii five-ohawaii five-o
CBS Television Distribution

279 episodes

22

Wagon Train (1957-1965)

still from wagon trainstill from wagon train
NBCUniversal Television Distribution

284 episodes

21

The George Burns and Gracie Allen Show (1950-1958)

The George Burns and Gracie Allen ShowThe George Burns and Gracie Allen Show
Screen Gems

291 episodes

20

Beverly Hills, 90210 (1990-2000)

beverly hills 90210beverly hills 90210
CBS Television Distribution

293 episodes

19

American Dad! (2005-)

still from american dadstill from american dad
Disney-ABC Domestic Television

297 episodes

18

Supernatural (2005-)

still from supernaturalstill from supernatural
The CW

320 episodes

17

Criminal Minds (2005-2020)

still from criminal mindsstill from criminal minds
CBS Television Distribution

324 episodes

16

ER (1994-2009)

still from erstill from er
Warner Bros. Domestic Television Distribution

331 episodes

15

CSI: Crime Scene Investigation (2000-2015)

marg helgenberger on csi crime scene investigationmarg helgenberger on csi crime scene investigation
CBS Television Distribution

337 episodes

14

The Danny Thomas Show (1953-1964)

the danny thomas showthe danny thomas show
Stadium Media

343 episodes

13

Knots Landing (1979-1993)

knots landingknots landing
Warner Bros. Television Distribution

344 episodes

12

Family Guy (1999-)

still from family guystill from family guy
Fox

349 episodes

11

Dallas (1978-1991)

still from dallasstill from dallas
Warner Bros. Television Distribution

357 episodes

10

Grey’s Anatomy (2005-)

still from grey's anatomystill from grey's anatomy
ABC

363 episodes

9

My Three Sons (1960-1972)

still from my three sonsstill from my three sons
CBS Television Distribution

380 episodes

8

NCIS (2003-)

still from NCISstill from NCIS
CBS Television Distribution

398 episodes

7

Bonanza (1959-1973)

still from bonanzastill from bonanza
CBS Television Distribution

431 episodes

6

The Adventures of Ozzie and Harriet (1952-1966)

the adventures of ozzie and harrietthe adventures of ozzie and harriet
Shout Factory

435 episodes

5

Law & Order (1990-2010)

still from law and orderstill from law and order
NBCUniversal Television Distribution

456 episodes

4

Law & Order: Special Victims Unit (1999-)

stabler and benson in law and order special victims unitstabler and benson in law and order special victims unit
NBC

478 episodes

3

Lassie (1954-1971)

still from lassiestill from lassie
NBCUniversal Television Distribution

591 episodes

2

Gunsmoke (1955-1975)

still from gunsmokestill from gunsmoke
CBS Television Distribution

635 episodes

1

The Simpsons (1989-)

the simpsonsthe simpsons
Fox

684 episodes

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