Ignacy Witczak

Ignacy Witczak was a GRU Illegal officer in the United States during World War II.
Witczak's code name with the GRU and as deciphered by the Venona project and other counterintelligence investigations was "R".

Ignacy Witczak is referenced in the following Venona decryptions and FBI reports:

• 3, 4, 5 KGB San Francisco to Moscow, 2 January 1946;
• 25 KGB San Francisco to Moscow, 26 January 1946;
• 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.;
• FBI report, “Soviet Activities in the United States,” 25 July 1946, Clark M. Clifford papers, Truman Library.