Godzilla Raids Again (Japanese: ゴジラの逆襲, Hepburn: Gojira no Gyakushū; lit. 'Godzilla's Counterattack') is a 1955 Japanese kaiju film directed by Motoyoshi Oda, with special effects by Eiji Tsuburaya. Produced and distributed by Toho Co., Ltd., it is the second film in the Godzilla franchise, and a sequel to Godzilla (1954). The film stars Hiroshi Koizumi, Setsuko Wakayama, Minoru Chiaki, and Takashi Shimura, with Haruo Nakajima as Godzilla and Katsumi Tezuka as Anguirus. In the film, Japan struggles to survive the attack of the second Godzilla, as well as its destructive battle against its ancient foe Anguirus.

Executive producer Iwao Mori instructed producer Tomoyuki Tanaka to immediately commence production on a second Godzilla film, fearing to lose the momentum of the first film's success. Oda was chosen to direct the film as Ishirō Honda was busy directing Lovetide.

Godzilla Raids Again was released theatrically in Japan on April 24, 1955. A re-edited, English dubbed version was released theatrically in the United States on June 2, 1959, by Warner Bros. Pictures, under the title Gigantis, the Fire Monster. It played on a double feature with Teenagers from Outer Space.

The film was followed by King Kong vs. Godzilla, released on August 11, 1962.

In 1955, a pilot named Shoichi Tsukioka, who is working for Kaiyo Fishing, Inc., guides a fishing trawler towards a school of bonito. Koji Kobayashi, another pilot, faces engine troubles and makes an emergency landing on Iwato Island. Tsukioka is sent to rescue Kobayashi, but they both encounter two giant dinosaurian creatures locked in battle: Godzilla and a new quadruped monster. The pilots escape as the monsters tumble into the sea.

Tsukioka and Kobayashi go to Osaka to help Dr. Yamane and the authorities investigate the encounter. The new monster is identified as an Ankylosaurus-like carnivore named Anguirus. Dr. Yamane shows the authorities footage of the first Godzilla attack and notes that the first Godzilla was killed by the Oxygen Destroyer, but its inventor died, and that there are no proven countermeasures left against Godzilla. Dr. Yamane suggests issuing a blackout and using drop flares to lure Godzilla away due to the first Godzilla being sensitive to light.

Tsukioka’s girlfriend Hidemi, a plane dispatcher for the fishing company, expresses her concern for Osaka to him, and he reveals that he thought about her when he thought he might die on Iwato Island. They watch as the Japan Air Self-Defense Force (JASDF) take off to find Godzilla, but scientists note that it may prove difficult due to the possibility of Godzilla hiding in caves within the seabed. Later, Godzilla is spotted heading for the Kii Channel between Shikoku and Wakayama Prefecture. Yamaji, Tsukioka’s boss and Hidemi’s father, notes that if Godzilla wreaks havoc in those waters, their fishing company will lose valuable fishing ground and strike a blow at production.

Later, an alert is issued for the Osaka region as Godzilla changes course for Osaka Bay. The Japan Self-Defense Forces (JSDF) cut off the lights in the city and lure Godzilla with flares. Tsukioka leaves Hidemi at her home for safety and leaves with Kobayashi to meet Yamaji at his cannery. Convicts escape from their transport and lead police on a chase that ends with a few convicts crashing into an oil refinery, triggering an explosion, while other convicts escape into Osaka. The explosion lures Godzilla back to Osaka, forcing the JSDF to attack it. Attracted by the flares, Anguirus emerges and engages Godzilla. The monsters battle throughout the city, destroying Yamaji’s cannery and killing the convicts in the process. Godzilla kills Anguirus and returns to the sea after burning the body with its atomic breath.