Manuel Contreras, Chilean general (b. 1929)
Juan Manuel "Mamo" Guillermo Contreras Sepúlveda (4 May 1929 – 7 August 2015) was a Chilean Army officer and the former head of the National Intelligence Directorate (DINA), Chile's secret police during the dictatorship of General Augusto Pinochet. In 1995, he was sentenced to seven years in prison for the murder in Washington, D.C. of Chilean diplomat Orlando Letelier, which he served until 2001.

At the time of his death in August 2015, Contreras was serving 59 unappealable sentences totaling 529 years in prison for kidnapping, forced disappearance and assassination.