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"Decoding Alan Turing" (2009) is an American historical documentary. Alan Turing was a Cambridge mathematician who designed and built a crude computer to crack the Nazi Enigma code, so the Allies could learn their movements. Turing's work with "Computable Numbers" eventually led to the development of modern computers. He was also a homosexual in a time and place where that was illegal. Despite his contributions to the defeat of the Nazis, he was persecuted because of his sexual orientation.

Decoding Alan Turing is a 2009 documentary with a runtime of 16 hours. It has received mostly positive reviews from critics and viewers, who have given it an IMDb score of 6.7.