| Beware the Batman | July 13, 2013 | Cartoon Network | 26 |
| Big City Greens | June 18, 2018 | Disney Channel, Disney XD | 116 |
| Big Guy and Rusty the Boy Robot | September 18, 1999 | Fox Kids | 26 |
| Big Hero 6: The Series | November 20, 2017 | Disney Channel, Disney XD | 47 |
| Big Mouth | September 29, 2017 | Netflix | 81 |
| Big Nate | February 17, 2022 | Paramount+ | 52 |
| Biker Mice from Mars | September 18, 1993 | Fox Broadcasting Company, Broadcast syndication | 65 |
| Biker Mice from Mars | August 26, 2006 | CITV | 28 |
| Bill & Ted's Excellent Adventures | September 15, 1990 | CBS | 21 |
| Billy Dilley's Super-Duper Subterranean Summer | June 3, 2017 | Disney XD | 13 |
| Bionic Six | April 19, 1987 | — | 65 |
| Birdgirl | April 5, 2021 | Adult Swim | 12 |
| Birdman and the Galaxy Trio | September 9, 1967 | NBC | 20 |
| Birdz | October 3, 1998 | CBS | 13 |
| Bitcoin Brigade: Adventures in Satoshi City | 2026 | — | — |
| Black Dynamite | July 15, 2012 | Cartoon Network | 20 |
| Black Panther | January 16, 2010 | ABC Entertains | 12 |
| Blackstar | September 12, 1981 | CBS | 13 |
| Blade Runner: Black Lotus | — | — | — |
| Blaze and the Monster Machines | October 13, 2014 | Nickelodeon | 151 |
| Blazing Team: Masters of Yo Kwon Do | November 13, 2015 | — | — |
| Bless the Harts | September 29, 2019 | Fox Broadcasting Company | 34 |
| Blippi And Sesame Street Adventures | 2025 | — | — |
| Blippi Wonders | 2021 | — | 76 |
| Blippi's Job Show | 2025 | Netflix | 20 |
| Blood of Zeus | October 27, 2020 | Netflix | 24 |
| Blue Eye Samurai | November 3, 2023 | — | 8 |
| Bluey | October 1, 2018 | ABC Kids | 154 |
| Bob's Burgers | January 9, 2011 | Fox Broadcasting Company | 313 |
| Bobby's World | September 8, 1990 | Fox Broadcasting Company, Fox Kids | 81 |
| BoJack Horseman | August 22, 2014 | Netflix | 77 |
| Bonkers | September 4, 1993 | Disney Channel | 60 |
| Bordertown | January 3, 2016 | Fox Broadcasting Company | 13 |
| Bossy Bear | March 6, 2023 | Nickelodeon, Nick Jr. Channel | 30 |
| Boy Girl Dog Cat Mouse Cheese | — | — | 129 |
| Brad Neely's Harg Nallin' Sclopio Peepio | July 10, 2016 | Adult Swim, Cartoon Network | 10 |
| Brain Dump | — | — | — |
| Brandy & Mr. Whiskers | August 21, 2004 | Disney Channel, Toon Disney | 77 |
| Brats of the Lost Nebula | October 10, 1998 | — | 13 |
| Bratz | August 21, 2005 | Fox Broadcasting Company, CITV | 40 |
| BraveStarr | September 14, 1987 | Broadcast syndication | 65 |
| Breadwinners | February 17, 2014 | Nicktoons, Nickelodeon | 40 |
| Breezly and Sneezly | September 16, 1964 | — | — |
| Brickleberry | September 25, 2012 | Comedy Central | 36 |
| Bruno the Kid | September 23, 1996 | Fox Broadcasting Company | 36 |
| Bubble Guppies | August 12, 2013 | Nickelodeon, Nick Jr. Channel | 129 |
| Bucky and Pepito | 1959 | — | 36 |
| Bucky O'Hare and the Toad Wars | September 8, 1991 | La Cinq | 13 |
| Buddy Thunderstruck | March 10, 2017 | Netflix | 12 |
| Buford and the Galloping Ghost | February 3, 1979 | NBC | 13 |
| Bugs 'n' Daffy | September 11, 1995 | — | 130 |
| Bugs Bunny Builders | July 25, 2022 | Cartoon Network | — |
| Bump in the Night | September 10, 1994 | American Broadcasting Company | 26 |
| Bunnicula | February 6, 2016 | Boomerang, Cartoon Network | 104 |
| Bunsen Is a Beast | January 16, 2017 | Nickelodeon | 15 |
| Bureau of Alien Detectors | September 8, 1996 | Fox Kids, UPN Kids | 13 |
| Butt-Ugly Martians | January 1, 2001 | Nickelodeon | 26 |
| Butterbean's Café | November 12, 2018 | — | 61 |
| Buzz Lightyear of Star Command | October 2, 2000 | American Broadcasting Company, UPN, Broadcast syndication | 62 |
| C Bear and Jamal | February 3, 1996 | Fox Kids | 13 |