Varan the Unbelievable (大怪獣バラン, Daikaijū Baran) is a 1958 Japanese kaiju film produced by Tomoyuki Tanaka, directed by Ishirō Honda, and starring Kôzô Nomura, Ayumi Sonoda, and Fumito Matsuo, with Haruo Nakajima as Varan.

In 1962, for the American market, Crown International Pictures released a heavily re-edited adaptation of Varan the Unbelievable, starring Myron Healey, as a double feature with the re-edited, shortened, and retitled version of the East German/Polish science fiction film First Spaceship on Venus.

In the plot of the Americanized version of the film, United States Navy Commander Jim Bradley (Myron Healy) is sent to Japan to test a new chemical that will desalinate water. However, the indigenous population are against the experiments in their salt lake. They fear that the chemical will re-awaken their ancient god, Obaki, who they say lives in the lake. Despite their objections, the villagers are evacuated and the experiment goes on as scheduled. As they feared, the chemical reawakens their god, a giant prehistoric monster. The creature destroys the local village and then heads to the city of Oneida.