The Fantastic Four is an American animated television series produced by Hanna-Barbera Productions and based on the Marvel Comics superhero team of the same name. The program, featuring character designs by Alex Toth, aired Saturday mornings on ABC from September 9, 1967, to September 21, 1968. It lasted for 20 episodes, with repeat episodes airing on ABC for three years until the network cancelled the program. It was also rerun as part of the continuing series Hanna–Barbera's World of Super Adventure.

Alexander Toth was an American cartoonist active from the 1940s through the 1980s. Toth's work began in the American comic book industry, but he is also known for his animation designs for Hanna-Barbera throughout the 1960s and 1970s. His work included Super Friends, Fantastic Four, Space Ghost, Sealab 2020, The Herculoids and Birdman. Toth's work has been resurrected in the late-night, adult-themed spin-offs on Cartoon Network’s late night sister channel Adult Swim: Space Ghost Coast to Coast, Sealab 2021 and Harvey Birdman, Attorney at Law.