Thomas Rex Hargrove (3 March 1944 - 22 January 2011) was an American agricultural scientist who was kidnapped in Colombia by FARC narco-guerillas in 1994. Throughout the 11 months he was captive, Hargrove secretly kept a diary which was published as Long March To Freedom: Tom Hargrove's Own Story of His Kidnapping by Colombian Narco-Guerrillas. The 2000 film Proof of Life starring Meg Ryan and Russell Crowe was heavily based on Hargrove and his ordeal.