Water (Russian: Вода), also released as The Great Mystery of Water (Russian: Великая тайна воды) is a 2006 documentary television film directed by Anastaysia Popova about the memory of water. The film was part of television channel Rossiya 1's project The Great Mystery of Water.

In the film, scientists and pseudoscientists from various countries (including Kurt Wüthrich, Masaru Emoto, Rustum Roy, and Konstantin Korotkov) present their work on the theme of water. Additionally, clergy from major religions (including Metropolit of Smolensk Kirill, Shamil Alyautdinov, and Pinchas Polonsky) discuss the importance of water in their faith. The film also presents experiences of water, including the emotions of humans interacting with the water (using kirlian photography).

In November 2006 the film won three television awards at TEFI, including for the best documentary film.Water faced sharp criticism from the Russian scientific community, which condemned the movie as pseudoscience.

Wüthrich distanced himself from the film, saying that although he was interviewed, his statements were taken out of context. He was not informed that the interview was to be used for a film. He later wrote: "It is much more problematic that the film, by presenting a Nobel Prize winner, suggests to the viewer that the nonsense presented is actually scientific consensus."