Longest-running DC Comics TV shows

At the time of this writing and this excludes imprints.

By number of episodes (all of them have spanned more than 50 episodes)

1. DC Daily (DC Universe, 2018-20) - 450 episodes
2. Teen Titans Go! (Cartoon Network, 2014-present) - 411+ episodes
3. Smallville (The WB, 2001-06; The CW, 2006-11) - 218 episodes
4. The Flash (The CW, 2014-23) - 184 episodes
5. Arrow (The CW, 2012-20) - 170 episodes
6. DC Nation Shorts (Cartoon Network, 2011-14) - 162 episodes
7. Supergirl (CBS, 2015-16; The CW, 2016-21) - 126 episodes
8. Batman (ABC, 1966-68) - 120 episodes
9. The Plastic Man Comedy/Adventure Show (ABC, 1979-81) and DC Super Hero Girls (YouTube, 2015-18) - 112 episodes
10. Legends of Tomorrow (The CW, 2016-22) - 110 episodes
11. Batman: The Animated Series (Fox Kids, 1992-95; Kids' WB, 1997-99 as The New Batman Adventures) - 109 episodes
12. Adventures of Superman (syndication, 1952-58) - 104 episodes
13. Superboy (syndication, 1988-92) and Gotham (Fox, 2014-19) - 100 episodes
14. Young Justice (Cartoon Network, 2010-13; DC Universe, 2019; HBO Max, 2021-22) - 98 episodes
15. Super Friends (ABC, 1973-85) - 93 episodes
16. Justice League (Cartoon Network, 2001-06; 2004-06 as Justice League Unlimited) - 91 episodes
17. Lois & Clark: The New Adventures of Superman (ABC, 1993-97) - 88 episodes
18. DC Super Hero Girls (Cartoon Network, 2019-21) - 78 episodes
19. Batwheels (Cartoonito, 2022-present) - 77+ episodes
20. Swamp Thing (USA, 1990-93) - 72 episodes
21. The New Adventures of Superman (CBS, 1966-70) - 68 episodes
22. Teen Titans (Kids' WB and Cartoon Network, 2003-06), The Batman (Kids' WB, 2004-08) and Batman: The Brave and the Bold (Cartoon Network, 2009-12) - 65 episodes
23. Wonder Woman (ABC, 1975-76; CBS, 1977-79) - 60 episodes
24. Black Lightning (The CW, 2018-21) - 58 episodes
25. Harley Quinn (DC Universe, 2019-20; HBO Max/Max, 2022-present) - 57 episodes
26. Superman: The Animated Series (Kids' WB, 1996-2000) - 54 episodes
27. Superman & Lois (The CW, 2021-24) - 53 episodes
28. Batman Beyond (Kids' WB, 1999-2001), Static Shock (Kids' WB, 2000-04) and Justice League Action (Cartoon Network, 2016-18) - 52 episodes
29. Batwoman (The CW, 2019-22) - 51 episodes

By number of seasons (all of them have spanned more than three seasons)

1. Smallville (The WB, 2001-06; The CW, 2006-11) - Ten seasons
2. Super Friends (ABC, 1973-85), Teen Titans Go! (Cartoon Network, 2014-present) and The Flash (The CW, 2014-23) - Nine seasons
3. Arrow (The CW, 2012-20) - Eight seasons
4. Legends of Tomorrow (The CW, 2016-22) - Seven seasons
5. Adventures of Superman (syndication, 1952-58) and Supergirl (CBS, 2015-16; The CW, 2016-21) - Six seasons
6. The Plastic Man Comedy/Adventure Show (ABC, 1979-81), Justice League (Cartoon Network, 2001-06; 2004-06 as Justice League Unlimited), Teen Titans (Kids' WB and Cartoon Network, 2003-06), The Batman (Kids' WB, 2004-08), Gotham (Fox, 2014-19), DC Super Hero Girls (YouTube, 2015-18) and Harley Quinn (DC Universe, 2019-20; HBO Max/Max, 2022-present) - Five seasons
7. Superboy (syndication, 1988-92), Lois & Clark: The New Adventures of Superman (ABC, 1993-97), Black Lightning (The CW, 2018-21), Titans (DC Universe, 2018-19; HBO Max/Max, 2021-23), Doom Patrol (DC Universe, 2019-20; HBO Max/Max, 2020-23)
8. Batman (ABC, 1966-68), The Adventures of Superboy (CBS, 1966-69), Shazam! (CBS, 1974-76), Wonder Woman (ABC, 1975-76; CBS, 1977-79), Swamp Thing (USA, 1990-93), Batman: The Animated Series (Fox Kids, 1992-95; Kids' WB, 1997-99 as The New Batman Adventures), Batman Beyond (Kids' WB, 1999-2001), Gotham Girls (Warner Bros. website, 2000-02), Batwoman (The CW, 2019-22), Pennyworth (Epix, 2019-21; HBO Max, 2022) and Stargirl (DC Universe, 2020; The CW, 2020-22) - Three seasons