The Last Tunnel () is a 1987 Mexican drama film directed by Servando González. The film was selected as the Mexican entry for the Best Foreign Language Film at the 61st Academy Awards, but was not accepted as a nominee.
Manuel Iglesias, an engineer, is assigned to oversee the expansion of the railway line from the state of Chihuahua to the Pacific. He sends his adopted son, Julián, who is reluctant to take part in the project. Once there, Julián seduces Andarica, the daughter of the Tarahumara governor, and leaves her pregnant. Although he refuses to marry her, Manuel Iglesias promises the governor that the marriage will happen.