# List of longest-running scripted American primetime television series

This is a list of the longest-running scripted prime time television series in the United States, as measured by number of seasons. Only shows that have aired on a major broadcast network for seven or more seasons and at least 100 episodes are included. Those that moved to syndication, a cable network, or a streaming service are noted below.
| Number of seasons | Series | Network | First air date | Last air date | Number of episodes |
| 36 | The Simpsons | Fox | December 17, 1989 | present | 782 |
| 26 | Law & Order: Special Victims Unit | NBC | September 20, 1999 | present | 565 |
| 24 | Law & Order | NBC | September 13, 1990 | present | 515 |
| 23 | Family Guy | Fox | April 11, 1999 | present | 428 |
| 22 | NCIS | CBS | September 23, 2003 | present | 480 |
| 21 | Grey's Anatomy | ABC | March 27, 2005 | present | 438 |
| 21 | American Dad! | Fox (2005–2014) TBS (2014–present) | May 1, 2005 | present | 384 |
| 20 | Gunsmoke | CBS | September 10, 1955 | March 31, 1975 | 635 |
| 19 | Lassie | CBS | September 12, 1954 | March 21, 1971 | 591 |
| 17 | Criminal Minds | CBS (2005–2020) Paramount+ (2022–present) | September 22, 2005 | present | 344 |
| 15 | CSI: Crime Scene Investigation | CBS | October 6, 2000 | February 15, 2015 | 337 |
| 15 | ER | NBC | September 19, 1994 | April 2, 2009 | 331 |
| 15 | Supernatural | The WB (2005–2006) The CW (2006–2020) | September 13, 2005 | November 19, 2020 | 327 |
| 15 | Bob's Burgers | Fox | January 9, 2011 | present | 286 |
| 15 | The Jack Benny Program | CBS (1950–1964) NBC (1964–1965) | October 28, 1950 | April 16, 1965 | 261 |
| 14 | The Adventures of Ozzie and Harriet | ABC | October 3, 1952 | April 23, 1966 | 435 |
| 14 | Bonanza | NBC | September 12, 1959 | January 16, 1973 | 432 |
| 14 | Dallas | CBS | April 2, 1978 | May 3, 1991 | 357 |
| 14 | Knots Landing | CBS | December 27, 1979 | May 13, 1993 | 344 |
| 14 | NCIS: Los Angeles | CBS | September 22, 2009 | May 21, 2023 | 323 |
| 14 | Blue Bloods | CBS | September 24, 2010 | December 13, 2024 | 293 |
| 13 | Chicago Fire | NBC | October 10, 2012 | present | 266 |
| 13 | King of the Hill | Fox | January 12, 1997 | May 6, 2010 | 259 |
| 12 | My Three Sons | ABC (1960–1965) CBS (1965–1972) | September 29, 1960 | April 13, 1972 | 380 (184 in black-and-white, 196 in color) |
| 12 | Hawaii Five-O | CBS | September 26, 1968 | April 26, 1980 | 281 |
| 12 | The Big Bang Theory | CBS | September 24, 2007 | May 16, 2019 | 279 |
| 12 | Murder, She Wrote | CBS | September 30, 1984 | May 19, 1996 | 264 (+ 4 TV movies) |
| 12 | Two and a Half Men | CBS | September 22, 2003 | February 19, 2015 | 262 |
| 12 | NYPD Blue | ABC | September 21, 1993 | March 1, 2005 | 261 |
| 12 | Bones | Fox | September 13, 2005 | March 28, 2017 | 246 |
| 12 | Chicago P.D. | NBC | January 8, 2014 | present | 235 |
| 11 | The Danny Thomas Show | ABC (1953–1957) CBS (1957–1964) | September 29, 1953 | April 27, 1964 | 343 |
| 11 | Cheers | NBC | September 30, 1982 | May 20, 1993 | 275 |
| 11 | Frasier | NBC | September 16, 1993 | May 13, 2004 | 264 |
| 11 | Murphy Brown | CBS | November 14, 1988 | December 20, 2018 | 260 |
| 11 | Married... with Children | Fox | April 5, 1987 | June 9, 1997 | 259 |
| 11 | M*A*S*H | CBS | September 17, 1972 | February 28, 1983 | 256 |
| 11 | Happy Days | ABC | January 15, 1974 | September 24, 1984 | 255 |
| 11 | The Jeffersons | CBS | January 18, 1975 | June 25, 1985 | 253 |
| 11 | Modern Family | ABC | September 23, 2009 | April 8, 2020 | 250 |
| 11 | Will & Grace | NBC | September 21, 1998 | April 23, 2020 | 246 |
| 11 | 7th Heaven | The WB (1996–2006) The CW (2006–2007) | August 26, 1996 | May 13, 2007 | 243 |
| 11 | The X-Files | Fox | September 10, 1993 | March 21, 2018 | 218 |
| 10 | Beverly Hills, 90210 | Fox | October 4, 1990 | May 17, 2000 | 293 |
| 10 | Hawaii Five-0 | CBS | September 20, 2010 | April 3, 2020 | 240 |
| 10 | Friends | NBC | September 22, 1994 | May 6, 2004 | 236 (+ 1 special) |
| 10 | CSI: Miami | CBS | September 23, 2002 | April 8, 2012 | 232 |
| 10 | Roseanne | ABC | October 18, 1988 | May 22, 2018 | 231 |
| 10 | The Goldbergs | ABC | September 24, 2013 | May 3, 2023 | 229 |
| 10 | JAG | NBC (1995–1996) CBS (1997–2005) | September 1, 1995 | April 29, 2005 | 227 |
| 10 | Smallville | The WB (2001–2006) The CW (2006–2011) | October 16, 2001 | May 13, 2011 | 218 |
| 10 | The Blacklist | NBC | September 23, 2013 | July 13, 2023 | 218 |
| 10 | Law & Order: Criminal Intent | NBC (2001–2007) USA (2007–2011) | September 30, 2001 | June 26, 2011 | 195 |
| 10 | Chicago Med | NBC | November 17, 2015 | present | 190 |
| 9 | The Beverly Hillbillies | CBS | September 26, 1962 | March 23, 1971 | 274 |
| 9 | Perry Mason | CBS | September 21, 1957 | May 22, 1966 | 271 |
| 9 | The Virginian | NBC | September 19, 1962 | March 24, 1971 | 249 |
| 9 | The Love Boat | ABC | September 24, 1977 | May 24, 1986 | 250 |
| 9 | The F.B.I. | ABC | September 19, 1965 | April 28, 1974 | 241 |
| 9 | The Drew Carey Show | ABC | September 13, 1995 | September 8, 2004 | 233 |
| 9 | Falcon Crest | CBS | December 4, 1981 | May 17, 1990 | 227 |
| 9 | The Waltons | CBS | September 14, 1972 | June 4, 1981 | 221 |
| 9 | Dynasty | ABC | January 13, 1981 | May 11, 1989 | 220 |
| 9 | Family Matters | ABC (1989–1997) CBS (1997–1998) | September 22, 1989 | July 17, 1998 | 215 |
| 9 | The Middle | ABC | September 30, 2009 | May 22, 2018 | 215 |
| 9 | Touched by an Angel | CBS | September 21, 1994 | May 27, 2003 | 211 |
| 9 | Everybody Loves Raymond | CBS | September 13, 1996 | May 16, 2005 | 210 |
| 9 | One Day at a Time | CBS | December 16, 1975 | May 28, 1984 | 209 |
| 9 | How I Met Your Mother | CBS | September 19, 2005 | March 31, 2014 | 208 |
| 9 | The King of Queens | CBS | September 21, 1998 | May 14, 2007 | 207 |
| 9 | All in the Family | CBS | January 12, 1971 | April 8, 1979 | 205 |
| 9 | Little House on the Prairie | NBC | September 11, 1974 | March 21, 1983 | 204 (+4 specials) |
| 9 | 24 | Fox | November 6, 2001 | July 14, 2014 | 204 + 24: Redemption |
| 9 | Alice | CBS | August 31, 1976 | March 19, 1985 | 202 |
| 9 | The Facts of Life | NBC | August 24, 1979 | May 7, 1988 | 201 |
| 9 | The Office | NBC | March 24, 2005 | May 16, 2013 | 201 |
| 9 | Coach | ABC | February 28, 1989 | May 14, 1997 | 200 |
| 9 | CSI: NY | CBS | September 22, 2004 | February 22, 2013 | 197 |
| 9 | Last Man Standing | ABC (2011–2017) Fox (2018–2021) | October 11, 2011 | May 20, 2021 | 194 |
| 9 | Night Court | NBC | January 4, 1984 | May 31, 1992 | 193 |
| 9 | Matlock | NBC (1986–1992) ABC (1992–1995) | September 23, 1986 | May 7, 1995 | 193 (+ pilot movie) |
| 9 | One Tree Hill | The WB (2003–2006) The CW (2006–2012) | September 23, 2003 | April 4, 2012 | 187 |
| 9 | The Flash | The CW | October 7, 2014 | May 24, 2023 | 184 |
| 9 | Scrubs | NBC (2001–2008) ABC (2009–2010) | October 2, 2001 | March 17, 2010 | 182 |
| 9 | Seinfeld | NBC | July 5, 1989 | May 14, 1998 | 180 |
| 8 | The George Burns and Gracie Allen Show | CBS | October 12, 1950 | September 15, 1958 | 291 |
| 8 | Wagon Train | NBC (1957–1962) ABC (1962–1965) | September 18, 1957 | May 2, 1965 | 284 |
| 8 | Dragnet | NBC | December 16, 1951 | August 23, 1959 | 276 |
| 8 | The Donna Reed Show | ABC | September 24, 1958 | March 19, 1966 | 275 |
| 8 | Mama | CBS | July 1, 1949 | July 27, 1956 | 261 |
| 8 | Bewitched | ABC | September 17, 1964 | March 25, 1972 | 254 (74 episodes in black-and-white but later colorized; 180 episodes in color) |
| 8 | The Andy Griffith Show | CBS | October 3, 1960 | April 1, 1968 | 249 |
| 8 | Rawhide | CBS | January 9, 1959 | December 7, 1965 | 217 |
| 8 | Home Improvement | ABC | September 17, 1991 | May 25, 1999 | 204 |
| 8 | The Cosby Show | NBC | September 20, 1984 | April 30, 1992 | 201 (and outtakes special) |
| 8 | Walker, Texas Ranger | CBS | April 21, 1993 | May 19, 2001 | 200 |
| 8 | That '70s Show | Fox | August 23, 1998 | May 18, 2006 | 200 |
| 8 | Ironside | NBC | September 14, 1967 | January 16, 1975 | 199 |
| 8 | Who's the Boss? | ABC | September 20, 1984 | April 25, 1992 | 196 |
| 8 | Mannix | CBS | September 16, 1967 | April 13, 1975 | 194 |
| 8 | Full House | ABC | September 22, 1987 | May 23, 1995 | 192 |
| 8 | Diff'rent Strokes | NBC (1978–1985) ABC (1985–1986) | November 3, 1978 | May 7, 1986 | 189 |
| 8 | Newhart | CBS | October 25, 1982 | May 21, 1990 | 184 |
| 8 | According to Jim | ABC | October 3, 2001 | June 2, 2009 | 182 |
| 8 | Desperate Housewives | ABC | October 3, 2004 | May 13, 2012 | 180 |
| 8 | Barnaby Jones | CBS | January 28, 1973 | April 3, 1980 | 178 |
| 8 | Laverne & Shirley | ABC | January 27, 1976 | May 10, 1983 | 178 |
| 8 | Diagnosis: Murder | CBS | October 29, 1993 | May 11, 2001 | 178 (+ pilot and 5 TV movies) |
| 8 | Charmed | The WB | October 7, 1998 | May 21, 2006 | 178 |
| 8 | House | Fox | November 16, 2004 | May 21, 2012 | 177 |
| 8 | Mad About You | NBC (1992–1999) Spectrum (2019) | September 23, 1992 | December 18, 2019 | 176 |
| 8 | Black-ish | ABC | September 24, 2014 | April 19, 2022 | 176 |
| 8 | Castle | ABC | March 9, 2009 | May 16, 2016 | 173 |
| 8 | Three's Company | ABC | March 15, 1977 | September 18, 1984 | 172 |
| 8 | L.A. Law | NBC | October 3, 1986 | May 19, 1994 | 172 |
| 8 | Wings | NBC | April 19, 1990 | May 21, 1997 | 172 |
| 8 | Girlfriends | UPN (2000–2006) The CW (2006–2008) | September 11, 2000 | February 11, 2008 | 172 |
| 8 | The Vampire Diaries | The CW | September 10, 2009 | March 10, 2017 | 171 |
| 8 | Arrow | The CW | October 6, 2012 | January 28, 2020 | 170 |
| 8 | Mom | CBS | September 23, 2013 | May 13, 2021 | 170 |
| 8 | Barney Miller | ABC | January 23, 1975 | May 20, 1982 | 170 |
| 8 | The Practice | ABC | March 4, 1997 | May 16, 2004 | 168 |
| 8 | Magnum, P.I. | CBS | December 11, 1980 | May 8, 1988 | 162 |
| 8 | Simon & Simon | CBS | November 24, 1981 | January 21, 1989 | 156 |
| 8 | S.W.A.T. | CBS | November 2, 2017 | present | 154 |
| 8 | Brooklyn Nine-Nine | Fox (2013–2018) NBC (2019–2021) | September 17, 2013 | September 16, 2021 | 153 |
| 8 | Perfect Strangers | ABC | March 25, 1986 | August 6, 1993 | 150 |
| 8 | Quincy, M.E. | NBC | October 3, 1976 | September 4, 1983 | 148 |
| 8 | 9-1-1 | Fox (2018–2023) ABC (2024–present) | January 3, 2018 | present | 114 |
| 7 | Melrose Place | Fox | July 8, 1992 | May 24, 1999 | 226 |
| 7 | Petticoat Junction | CBS | September 24, 1963 | April 4, 1970 | 222 |
| 7 | The Golden Girls | NBC | September 14, 1985 | May 21, 1992 | 180 |
| 7 | Star Trek: The Next Generation | CBS | September 28, 1987 | May 23, 1994 | 178 |
| 7 | Star Trek: Deep Space Nine | CBS | January 3, 1993 | June 2, 1999 | 176 |
| 7 | Family Ties | NBC | September 22, 1982 | May 14, 1989 | 176 + one film |
| 7 | Adam-12 | NBC | September 21, 1968 | May 20, 1975 | 174 |
| 7 | Star Trek: Voyager | UPN | January 16, 1995 | May 23, 2001 | 172 |
| 7 | Mission: Impossible | CBS | September 17, 1966 | March 30, 1973 | 171 |
| 7 | Medical Center | CBS | September 24, 1969 | September 6, 1976 | 170 |
| 7 | Empty Nest | NBC | October 8, 1988 | April 29, 1995 | 170 |
| 7 | Marcus Welby, M.D. | ABC | September 23, 1969 | May 4, 1976 | 170 |
| 7 | The Mary Tyler Moore Show | CBS | September 19, 1970 | March 19, 1977 | 168 |
| 7 | Growing Pains | ABC | September 24, 1985 | April 25, 1992 | 166 |
| 7 | Designing Women | CBS | September 29, 1986 | May 24, 1993 | 163 |
| 7 | Sabrina, the Teenage Witch | ABC (1996–2000) The WB (2000–2003) | September 27, 1996 | April 24, 2003 | 163 |
| 7 | Step by Step | ABC (1991–1997) CBS (1997–1998) | September 20, 1991 | June 26, 1998 | 160 |
| 7 | Without a Trace | CBS | September 26, 2002 | May 19, 2009 | 160 |
| 7 | Benson | ABC | September 13, 1979 | April 19, 1986 | 158 |
| 7 | Boy Meets World | ABC | September 24, 1993 | May 5, 2000 | 158 |
| 7 | Cold Case | CBS | September 28, 2003 | May 2, 2010 | 156 |
| 7 | The Good Wife | CBS | September 22, 2009 | May 8, 2016 | 156 |
| 7 | NCIS: New Orleans | CBS | September 23, 2014 | May 23, 2021 | 155 |
| 7 | Once Upon a Time | ABC | October 23, 2011 | May 18, 2018 | 155 |
| 7 | The West Wing | NBC | September 22, 1999 | May 14, 2006 | 154 |
| 7 | Elementary | CBS | September 27, 2012 | August 15, 2019 | 154 |
| 7 | Gilmore Girls | The WB (2000–2006) The CW (2006–2007) | October 5, 2000 | May 15, 2007 | 153 |
| 7 | Hunter | NBC | September 18, 1984 | April 26, 1991 | 153 |
| 7 | Fantasy Island | ABC | January 28, 1978 | May 19, 1984 | 152, plus 2 TV movies |
| 7 | Trapper John, M.D. | CBS | September 23, 1979 | September 4, 1986 | 151 |
| 7 | Malcolm in the Middle | Fox | January 9, 2000 | May 14, 2006 | 151 |
| 7 | The Mentalist | CBS | September 23, 2008 | February 28, 2015 | 151 |
| 7 | Just Shoot Me! | NBC | March 4, 1997 | August 16, 2003 | 145 (+ 3 episodes aired in syndication) |
| 7 | The Dukes of Hazzard | CBS | January 26, 1979 | February 8, 1985 | 147 |
| 7 | Hill Street Blues | NBC | January 15, 1981 | May 12, 1987 | 146 |
| 7 | New Girl | Fox | September 20, 2011 | May 15, 2018 | 146 |
| 7 | Buffy the Vampire Slayer | The WB (1997–2001) UPN (2001–2003) | March 10, 1997 | May 20, 2003 | 144 |
| 7 | In the Heat of the Night | NBC (1988–1992) CBS (1992–1994) | March 6, 1988 | May 11, 1994 | 147 + 4 TV movies |
| 7 | Young Sheldon | CBS | September 25, 2017 | May 16, 2024 | 141 |
| 7 | MacGyver | ABC | September 29, 1985 | May 21, 1992 | 139 + 2 TV films |
| 7 | 30 Rock | NBC | October 11, 2006 | January 31, 2013 | 139 |
| 7 | Riverdale | The CW | January 26, 2017 | August 23, 2023 | 137 |
| 7 | Agents of S.H.I.E.L.D. | ABC | September 24, 2013 | August 12, 2020 | 136 |
| 7 | Medium | NBC (2005–2009) CBS (2009–2011) | January 3, 2005 | January 21, 2011 | 130 |
| 7 | The Neighborhood | CBS | October 1, 2018 | present | 127 |
| 7 | Parks and Recreation | NBC | April 9, 2009 | February 24, 2015 | 126 |
| 7 | The Good Doctor | ABC | September 25, 2017 | May 21, 2024 | 126 |
| 7 | FBI | CBS | September 25, 2018 | present | 126 |
| 7 | Cagney & Lacey | CBS | March 25, 1982 | May 16, 1988 | 125 (+ pilot and 4 TV movies) |
| 7 | Scandal | ABC | April 5, 2012 | April 19, 2018 | 124 |
| 7 | Homicide: Life on the Street | NBC | January 31, 1993 | May 21, 1999 | 122 |
| 7 | The Rookie | ABC | October 16, 2018 | present | 116 |
| 7 | Legends of Tomorrow | The CW | January 21, 2016 | March 2, 2022 | 110 |
| 7 | Cheyenne | ABC | September 20, 1955 | December 17, 1962 | 108 |
| 7 | Station 19 | ABC | March 22, 2018 | May 30, 2024 | 105 |
| 7 | Rules of Engagement | CBS | February 5, 2007 | May 20, 2013 | 100 |
| 7 | The 100 | The CW | March 19, 2014 | September 30, 2020 | 100 |