Godzilla is an American animated monster television series produced by Hanna-Barbera Productions in association with Henry G. Saperstein. The series premiered on NBC on September 9, 1978, with the title The Godzilla Power Hour. The series continued to air until 1981, packaged with other series under various titles.

The Godzilla Power Hour consisted of half-hour episodes of Godzilla and Jana of the Jungle. A total of 13 original episodes were produced in 1978, with the first eight airing as part of The Godzilla Power Hour. On November 4, 1978, the show was expanded to 90 minutes with the addition of Jonny Quest reruns and retitled The Godzilla Super 90. Split off into its own half-hour, the show aired in its own half-hour timeslot as simply Godzilla on September 8, 1979, and then as The Godzilla/Globetrotters Adventure Hour on November 10, 1979, before another repackaging as The Godzilla/Dynomutt Hour on September 27, 1980, and then The Godzilla/Hong Kong Phooey Hour until its cancellation on May 16, 1981.

The series acquired the retronym of Godzilla: The Original Animated Series for its DVD release.

The series follows the adventures of a team of scientists on the Calico, a hydrofoil research vessel, headed by Captain Carl Majors. The rest of the crew include scientist Dr. Quinn Darien, her nephew Pete Darien and her research assistant Brock Borden. Also along for the ride is Godzooky, the "cowardly nephew" of Godzilla and Pete's best friend, in a comic foil role in the show. Godzooky can clumsily attempt to fly using the small wings under his arms. Whenever Godzooky tries to breathe fire, he usually just coughs up smoke rings.

The group often call upon Godzilla by using a special signaller when in danger, such as attacks by other giant monsters. Also, Godzooky can roar to summon Godzilla. Godzilla's size in the animated series shifts radically, sometimes within a single episode or even a single scene. For instance, Godzilla's claws can wrap around a large ship, and only minutes later the team of scientists fit rather neatly on Godzilla's palm. In addition, Godzilla's trademark atomic breath is altered so he breathes simple fire. He can also shoot laser beams from his eyes much like Superman's heat vision.

Toho Studios had considered adapting Godzilla for American TV animation as far back as the late 1960s when they entered negotiations with Filmation for an animated series based on the property that was intended for air during the 1969-70 television season, but the deal ultimately collapsed.

In regard to the origin of the series, Joseph Barbera came up with the idea of licensing Godzilla. He explained in a 1990s interview, "My job back then was to dig up new characters, new ideas, new shows, and I had wanted to do Godzilla for a while. I liked the monster thing, and the way it looked, and I thought we could do a lot with it. So I contacted Hank Saperstein, who was a very good friend and we got talking about it. Then there was an executive at the network who wanted to get into the act, and urged us to lighten the storyline up. So, I came up with the character Godzooky, who was like his son. The show had a sort of father-son relationship, which we had done before on shows like Augie Doggie and Doggie Daddy and Jonny Quest." Doug Wildey, creator of Jonny Quest, came on board as producer. DePatie–Freleng Enterprises had initially been slated to produce the Godzilla series while Hanna-Barbera was to produce The New Fantastic Four, but when DePatie–Freleng acquired the rights to the Fantastic Four NBC brokered a deal between the studios wherein DePatie–Freleng would produce The New Fantastic Four while Hanna-Barbera would produce Godzilla.

Barbera said that he wanted the series to be more-or-less a straight adaptation of the movie series, but, "When they start telling you in Standards and Practices, 'Don't shoot any flame at anybody, don't step on any buildings or cars,' then pretty soon, they've taken away all the stuff he represents. That became the problem, to maintain a feeling of Godzilla and at the same time cut down everything that he did. We managed to get a fair show out of it. It was OK. Godzooky kind of got the kids going." While Toho licensed Godzilla's likeness and name for the series, Toho refused to authorized the usage of sound effects for Godzilla's iconic roar meaning more generic monster sounds were utilized. When Wildey first designed the look of Godzilla for the series, his designs were rejected by Toho due to Widley trying to make Godzilla look more like a dinosaur or dragon and Toho would only sign off on the designs once Wildey added more ape-like features to Godzilla's face.