Elizabeth Terrill Bentley (January 1, 1908 – December 3, 1963) was an American spy and member of the Communist Party USA who served the Soviet Union from 1938 until 1945.
In 1945, she defected from the Communist Party and Soviet intelligence by contacting the FBI and reporting on her activities.
She became widely known after testifying in some trials and before HUAC.
In 1952 Bentley became an informer for the U.S., as she was paid by the FBI for her frequent appearances before different committees and investigations.
She exposed two networks of spies, ultimately naming more than 80 Americans who, she said, had engaged in espionage.