|Launched||August 26, 2001|
|Country of origin||United States|
|Owner||Home Box Office, Inc.|
(Warner Bros. Discovery)
|Formerly known as||Jam (2001–2016)|
|Sister network||Magnet (2001–2005)|
|Running time||6am-3pm (2001–04)|
6am-9am (2005–06; 2020–21)
HBO Kids (formerly Jam) is an American preschool/children's television morning block operated by Home Box Office, Inc. (HBO), a division of Warner Bros. Discovery. The block runs on HBO Family, HBO's sister station that targets children and families.
The block runs from 6:00 am to roughly 8:00 to 9:00 am (ET) on weekdays; the block's shows are not shown in a standard half-hour timeslot. The block used to have an weekday 4pm timeslot, which was filled with The Electric Company. The block used to also air on weekends until October 2020.
In 2001, HBO Family launched two children's programming blocks: Jam in the morning, and Magnet on weekday afternoons. Programming for both blocks was developed in coordination with CINAR Animation, Nelvana Limited, Sony Entertainment, Sandpaper Films, Scholastic, Devine Entertainment, S4C, HiT Entertainment, Golden Egg Entertainment, Poseidon Pictures, Cuppa Coffee Studios, Curious Pictures, Hyperion Pictures, and Planet Grande. Starting in 2007, with a new set of CGI bumpers for the block, HBO began to slowly remove the block's acquired programming, exclusively focusing on HBO's original children's series. For several years, no new programs were produced or acquired for the block, focusing exclusively on reruns of HBO's own children's programs.
On August 13, 2015, HBO announced a deal with Sesame Workshop to move first-run Sesame Street episodes on HBO. The episodes premiered on the network on January 16, 2016, alongside other Sesame Workshop-produced programming, including The Electric Company and Pinky Dinky Doo. The following day (which was January 17), Jam rebranded as HBO Kids. On November 12, 2020, first-run Sesame Street episodes moved to HBO Max (via. Cartoonito) starting with its 51st season.
On August 18, 2018, an animated series entitled Esme & Roy, also produced by Sesame Workshop, premiered. HBO removed all Sesame Workshop shows from its HBO Family channel by January 2021, reverting the block back to HBO's original children's series. However, most of the acquired shows from Sesame Workshop were still available on the HBO Max streaming service until January 2, 2021, with only Sesame Street, Esme & Roy, and any Sesame Workshop show made exclusive for the streaming service still being available. Currently, the block's schedule shows four of HBO's original programs, followed by a children's TV special, before airing one more program, then starting one of the channel's circulated movies or specials. 
|Title||Original run||HBO Kids run||Source(s)|
|A Little Curious||February 1, 1999 – May 1, 2000||August 26, 2001 – present||[note 1]|
|Happily Ever After: Fairy Tales for Every Child||March 12, 1995 – July 18, 2000||August 26, 2001 – 2004; January 2005 – present||[note 2][note 3]|
|Crashbox||February 1, 1999 – April 1, 2000||January 2005 – present||[note 4][note 5]|
|Kindergarten||August 26, 2001 – September 7, 2001||August 26, 2001 – present|
|HBO Storybook Musicals1||November 18, 1987 – December 8, 1993||August 26, 2001 – present|
|El Perro y El Gato1[note 6]||2004 – 2011||2008 – present||[note 7]|
|Classical Baby1||May 14, 2005 – present||May 14, 2005 – present|
|Title||Original network||Original run||HBO Kids run||Now on||Source(s)|
|The Electric Company||PBS Kids Go!
|January 23, 2009 – April 4, 2011||January 17, 2016 – November 1, 2020|||
|Pinky Dinky Doo||Noggin
Nick Jr. Channel
|April 10, 2006 – June 17, 2010||January 17, 2016 – January 2, 2021||Knowledge Kids|||