Jennifer K. Harbury (born 1951) is an American lawyer, author, and human rights activist. She has been instrumental in forcing the revelation of the complicity of the United States CIA in human rights abuses, particularly in Guatemala and other countries of Central America during the 1980s and 90s. Initially, she was trying to discover the fate of her husband Efraín Bámaca Velásquez, a Mayan guerrilla leader who was "disappeared" in March 1992 by the Guatemalan military. Declassified US files revealed that he was tortured and killed by high level intelligence officials in the Guatemalan army, who were also working as paid informants of the CIA.