<Table> <Tr> <Th> Number of seasons </Th> <Th> Series </Th> <Th> Network </Th> <Th> First air date </Th> <Th> Last air date </Th> <Th> hide Number of episodes </Th> </Tr> <Tr> <Td> 29 </Td> <Td> The Simpsons </Td> <Td> FOX </Td> <Td> 1989 - 12 - 17 </Td> <Td> Present </Td> <Td> 639 </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Gunsmoke </Td> <Td> CBS </Td> <Td> 1955 - 09 - 10 </Td> <Td> 1975 - 03 - 31 </Td> <Td> 635 </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Law & Order </Td> <Td> NBC </Td> <Td> 1990 - 09 - 13 </Td> <Td> 2010 - 05 - 24 </Td> <Td> 456 </Td> </Tr> <Tr> <Td> 19 </Td> <Td> Law & Order : Special Victims Unit </Td> <Td> NBC </Td> <Td> 1999 - 09 - 20 </Td> <Td> Present </Td> <Td> 434 </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Lassie </Td> <Td> CBS </Td> <Td> 1954 - 09 - 12 </Td> <Td> 1971 - 03 - 21 </Td> <Td> 591 </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Family Guy </Td> <Td> FOX </Td> <Td> 1999 - 01 - 31 </Td> <Td> Present </Td> <Td> 309 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> NCIS </Td> <Td> CBS </Td> <Td> 2003 - 09 - 23 </Td> <Td> Present </Td> <Td> 356 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> CSI : Crime Scene Investigation </Td> <Td> CBS </Td> <Td> 2000 - 10 - 06 </Td> <Td> 2015 - 02 - 15 </Td> <Td> 335 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> ER </Td> <Td> NBC </Td> <Td> 1994 - 09 - 19 </Td> <Td> 2009 - 04 - 02 </Td> <Td> 331 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> The Jack Benny Program </Td> <Td> CBS ( 1950 -- 1964 ) NBC ( 1964 -- 1965 ) </Td> <Td> 1950 - 10 - 28 </Td> <Td> 1965 - 04 - 16 </Td> <Td> 260 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> American Dad ! </Td> <Td> FOX ( 2005 -- 2014 ) TBS ( 2014 -- ) </Td> <Td> 2005 - 02 - 06 </Td> <Td> Present </Td> <Td> 247 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Grey 's Anatomy </Td> <Td> ABC </Td> <Td> 2005 - 03 - 27 </Td> <Td> Present </Td> <Td> 317 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> The Adventures of Ozzie and Harriet </Td> <Td> ABC </Td> <Td> 1952 - 10 - 03 </Td> <Td> 1966 - 04 - 23 </Td> <Td> 435 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Bonanza </Td> <Td> NBC </Td> <Td> 1959 - 09 - 12 </Td> <Td> 1973 - 01 - 16 </Td> <Td> 431 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Armstrong Circle Theatre </Td> <Td> NBC ( 1950 -- 1957 ) CBS ( 1957 -- 1963 ) </Td> <Td> 1950 - 06 - 06 </Td> <Td> 1963 - 06 - 05 </Td> <Td> 370 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Dallas </Td> <Td> CBS </Td> <Td> 1978 - 04 - 02 </Td> <Td> 1991 - 05 - 03 </Td> <Td> 357 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Knots Landing </Td> <Td> CBS </Td> <Td> 1979 - 12 - 27 </Td> <Td> 1993 - 05 - 13 </Td> <Td> 344 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Criminal Minds </Td> <Td> CBS </Td> <Td> 2005 - 09 - 22 </Td> <Td> Present </Td> <Td> 299 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Supernatural </Td> <Td> WB ( 2005 -- 2006 ) CW ( 2006 -- ) </Td> <Td> 2005 - 09 - 13 </Td> <Td> Present </Td> <Td> 287 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> King of the Hill </Td> <Td> FOX </Td> <Td> 1997 - 01 - 12 </Td> <Td> 2009 - 09 - 13 </Td> <Td> 259 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> My Three Sons </Td> <Td> ABC ( 1960 -- 1965 ) CBS ( 1965 -- 1972 ) </Td> <Td> 1960 - 09 - 29 </Td> <Td> 1972 - 04 - 13 </Td> <Td> 380 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> It 's Always Sunny in Philadelphia </Td> <Td> FX </Td> <Td> 2005 - 08 - 04 </Td> <Td> Present </Td> <Td> 134 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Hawaii Five - O </Td> <Td> CBS </Td> <Td> 1968 - 09 - 26 </Td> <Td> 1980 - 04 - 26 </Td> <Td> 279 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Murder , She Wrote </Td> <Td> CBS </Td> <Td> 1984 - 09 - 01 </Td> <Td> 1996 - 05 - 19 </Td> <Td> 264 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Two and a Half Men </Td> <Td> CBS </Td> <Td> 2003 - 09 - 22 </Td> <Td> 2015 - 02 - 19 </Td> <Td> 262 </Td> </Tr> <Tr> <Td> 12
<Table> <Tr> <Th> Number of seasons </Th> <Th> Series </Th> <Th> Network </Th> <Th> First air date </Th> <Th> Last air date </Th> <Th> hide Number of episodes </Th> </Tr> <Tr> <Td> 29 </Td> <Td> The Simpsons </Td> <Td> FOX </Td> <Td> 1989 - 12 - 17 </Td> <Td> Present </Td> <Td> 639 </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Gunsmoke </Td> <Td> CBS </Td> <Td> 1955 - 09 - 10 </Td> <Td> 1975 - 03 - 31 </Td> <Td> 635 </Td> </Tr> <Tr> <Td> 20 </Td> <Td> Law & Order </Td> <Td> NBC </Td> <Td> 1990 - 09 - 13 </Td> <Td> 2010 - 05 - 24 </Td> <Td> 456 </Td> </Tr> <Tr> <Td> 19 </Td> <Td> Law & Order : Special Victims Unit </Td> <Td> NBC </Td> <Td> 1999 - 09 - 20 </Td> <Td> Present </Td> <Td> 434 </Td> </Tr> <Tr> <Td> 18 </Td> <Td> Lassie </Td> <Td> CBS </Td> <Td> 1954 - 09 - 12 </Td> <Td> 1971 - 03 - 21 </Td> <Td> 591 </Td> </Tr> <Tr> <Td> 16 </Td> <Td> Family Guy </Td> <Td> FOX </Td> <Td> 1999 - 01 - 31 </Td> <Td> Present </Td> <Td> 309 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> NCIS </Td> <Td> CBS </Td> <Td> 2003 - 09 - 23 </Td> <Td> Present </Td> <Td> 356 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> CSI : Crime Scene Investigation </Td> <Td> CBS </Td> <Td> 2000 - 10 - 06 </Td> <Td> 2015 - 02 - 15 </Td> <Td> 335 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> ER </Td> <Td> NBC </Td> <Td> 1994 - 09 - 19 </Td> <Td> 2009 - 04 - 02 </Td> <Td> 331 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> The Jack Benny Program </Td> <Td> CBS ( 1950 -- 1964 ) NBC ( 1964 -- 1965 ) </Td> <Td> 1950 - 10 - 28 </Td> <Td> 1965 - 04 - 16 </Td> <Td> 260 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> American Dad ! </Td> <Td> FOX ( 2005 -- 2014 ) TBS ( 2014 -- ) </Td> <Td> 2005 - 02 - 06 </Td> <Td> Present </Td> <Td> 247 </Td> </Tr> <Tr> <Td> 15 </Td> <Td> Grey 's Anatomy </Td> <Td> ABC </Td> <Td> 2005 - 03 - 27 </Td> <Td> Present </Td> <Td> 317 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> The Adventures of Ozzie and Harriet </Td> <Td> ABC </Td> <Td> 1952 - 10 - 03 </Td> <Td> 1966 - 04 - 23 </Td> <Td> 435 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Bonanza </Td> <Td> NBC </Td> <Td> 1959 - 09 - 12 </Td> <Td> 1973 - 01 - 16 </Td> <Td> 431 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Armstrong Circle Theatre </Td> <Td> NBC ( 1950 -- 1957 ) CBS ( 1957 -- 1963 ) </Td> <Td> 1950 - 06 - 06 </Td> <Td> 1963 - 06 - 05 </Td> <Td> 370 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Dallas </Td> <Td> CBS </Td> <Td> 1978 - 04 - 02 </Td> <Td> 1991 - 05 - 03 </Td> <Td> 357 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Knots Landing </Td> <Td> CBS </Td> <Td> 1979 - 12 - 27 </Td> <Td> 1993 - 05 - 13 </Td> <Td> 344 </Td> </Tr> <Tr> <Td> 13 </Td> <Td> Criminal Minds </Td> <Td> CBS </Td> <Td> 2005 - 09 - 22 </Td> <Td> Present </Td> <Td> 299 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> Supernatural </Td> <Td> WB ( 2005 -- 2006 ) CW ( 2006 -- ) </Td> <Td> 2005 - 09 - 13 </Td> <Td> Present </Td> <Td> 287 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> King of the Hill </Td> <Td> FOX </Td> <Td> 1997 - 01 - 12 </Td> <Td> 2009 - 09 - 13 </Td> <Td> 259 </Td> </Tr> <Tr> <Td> 14 </Td> <Td> My Three Sons </Td> <Td> ABC ( 1960 -- 1965 ) CBS ( 1965 -- 1972 ) </Td> <Td> 1960 - 09 - 29 </Td> <Td> 1972 - 04 - 13 </Td> <Td> 380 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> It 's Always Sunny in Philadelphia </Td> <Td> FX </Td> <Td> 2005 - 08 - 04 </Td> <Td> Present </Td> <Td> 134 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Hawaii Five - O </Td> <Td> CBS </Td> <Td> 1968 - 09 - 26 </Td> <Td> 1980 - 04 - 26 </Td> <Td> 279 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Murder , She Wrote </Td> <Td> CBS </Td> <Td> 1984 - 09 - 01 </Td> <Td> 1996 - 05 - 19 </Td> <Td> 264 </Td> </Tr> <Tr> <Td> 12 </Td> <Td> Two and a Half Men </Td> <Td> CBS </Td> <Td> 2003 - 09 - 22 </Td> <Td> 2015 - 02 - 19 </Td> <Td> 262 </Td> </Tr> <Tr> <Td> 12
what is the longest running current tv show
what is the longest running current tv show
The Simpsons
The Simpsons