Otto Alleman was an American chemist who worked for Du Pont Chemical Corp. DuPont participated from 1943 in the Manhattan project. Before 1945, Alleman was a contact of the KGB officer Gaik Ovakimian. In 1945 Alleman was working for an import company and suspected by the FBI of assisting the transfer of funds for Soviet intelligence.
- FBI report, “Soviet Espionage Activities, 19 October 1945,” attached to Hoover to Vaughan, 19 October 1945, President's Secretary's Files, Harry S. Truman Library, Independence, Mo.
- John Earl Haynes and Harvey Klehr, Venona: Decoding Soviet Espionage in America, Yale University Press (1999).