Hanna-Barbera Wiki is an online encyclopedia dedicated to the television series, films, characters, and creative legacy associated with the American animation studio Hanna-Barbera. Founded by William Hanna and Joseph Barbera in 1957, the studio created a wide-ranging catalog that includes The Flintstones, The Jetsons, Scooby-Doo, Yogi Bear, Jonny Quest, The Smurfs, and The Powerpuff Girls. The wiki also covers works connected to the studio through later studios and parent companies, reflecting the history of its properties after they were acquired by Turner Broadcasting System in 1991 and became part of Warner Bros. Discovery.

With more than 11,000 articles, the site offers an extensive reference for fans and readers exploring Hanna-Barbera’s shows and related productions across different eras. Its content includes series listings and information about the studio’s many animated worlds and characters. The homepage also directs readers to check streaming platforms, including HBO Max and Tubi in the United States, and physical releases such as DVD and Blu-ray. A sister site, Looney Tunes Wiki, covers Looney Tunes-related material.