Fullmetal Alchemist the Movie: Conqueror of Shamballa (Japanese: 劇場版 鋼の錬金術師 シャンバラを征く者, Hepburn: Gekijōban Hagane no Renkinjutsushi: Shanbara o Yuku Mono) is a 2005 Japanese animated science fantasy action film directed by Seiji Mizushima and written by Sho Aikawa. The film is a direct sequel and conclusion to the first Fullmetal Alchemist television series which loosely adapted from the original manga series of the same name by Hiromu Arakawa and published by Square Enix. Conqueror of Shamballa follows the story of alchemist Edward Elric as he attempts to return to his homeworld, having lived for two years in a parallel universe, while his younger brother Alphonse is also trying to reunite with him by any means necessary. Edward's search attracts the attention of the Thule Society, which seeks to enter his homeworld, believing it to be Shamballa, to obtain new weapons to help them in World War II.

Conqueror of Shamballa premiered in Japan on July 23, 2005. A CD soundtrack has also been published featuring music from the film developed by Michiru Oshima and L'Arc-en-Ciel. In Japan, it has been edited in a standard DVD, as well as in a limited edition. It was later licensed in North America by Funimation that featured the film in cinemas for a short time, and also released it on DVD and Blu-ray.

Most of the staff from the first Fullmetal Alchemist anime started development on Conqueror of Shamballa shortly after the anime's ending. The original script had to be shortened to fit the film's length of 105 minutes. During its premiere in Japan, Conqueror of Shamballa remained as one of the most popular films in the year. Critical reaction to the film has commonly been positive, with reviews praising the film's story and animation used.