Updated: June 22, 2024

Hanna-Barbera was an American animation studio and production company, which was active from 1957 until its absorption into Warner Bros. Animation in 2001. Founded on July 7, 1957 by Tom and Jerry creators William Hanna and Joseph Barbera, it was headquartered on Cahuenga Blvd from 1960 to 1998, then subsequently at the Sherman Oaks Galleria in Sherman Oaks. In 1958, the studio debuted The Huckleberry Hound Show, then The Flintstones in 1960.

The Jetsons, The Yogi Bear Show, Jonny Quest, Wacky Races, Scooby-Doo, Where Are You! and The Smurfs soon followed. Hanna-Barbera may have usurped Disney as the most successful animation studio in the world, with its characters becoming ubiquitous across different types of media and myriad consumer products. By the 1980s, however, the studio's fortunes were in decline, as the profitability of Saturday-morning cartoons was eclipsed by weekday afternoon syndication.