UPN Kids (branded as "The UPN Kids Action Zone" during the 1998–1999 season) was a children's programming block that aired on UPN from September 10, 1995 to September 5, 1999. Airing on Sunday through Friday mornings, the block aired for two hours each day (usually from 7:00–9:00 a.m. on weekdays and 9:00–11:00 a.m. on Sundays).
UPN Kids launched on September 10, 1995 with a two-hour block of cartoons (such as Space Strikers and Teknoman); unlike NBC, ABC, CBS, Fox and The WB (the latter of which debuted its own children's program block, Kids' WB, that same month), UPN ran its weekend morning children's programs on Sunday mornings instead of Saturdays.
In 1997, UPN incorporated live-action series aimed at teenagers, alongside the animated series that were aimed at a younger audience, with the addition of reruns of the syndicated series Sweet Valley High and the debut of a new series, Breaker High.
In January 1998, UPN began discussions with The Walt Disney Company (owner of rival network ABC) to have the company program a daily two-hour children's block for the network but attempts to reach a time-lease agreement deal with Disney were called off one week later due to a dispute between Disney and UPN over how the block would be branded and the amount of programming compliant with the Federal Communications Commission's E/I regulations that Disney would provide for the block; UPN then entered into discussions with then-corporate sister Nickelodeon (both were owned by Viacom). In February 1998, UPN entered into an agreement with Saban Entertainment – which distributed Sweet Valley High and Breaker High – to program the block on Sunday mornings; shows such as The Incredible Hulk, X-Men, Spider-Man and Beetleborgs soon joined the schedule.
In March 1998, UPN resumed discussions with Disney and the following month, The Walt Disney Company agreed to develop a weekday and Sunday morning children's block for UPN. The new lineup, which was created as a sister block to Disney's One Saturday Morning on ABC, was called Disney's One Too. UPN Kids aired for the last time on September 5, 1999, with Disney's One Too replacing it one day later.