Samuel Simon Krafsur (January 10, 1913 – June 1983) was a Boston-born journalist who worked for the Soviet news agency TASS during World War II.

He lived at 68 Phillips Street in Boston before going to Spain to fight with the Abraham Lincoln Brigade during the Spanish Civil War, where he was wounded in 1937.

In April 1938 he was in charge of finding veterans to tell their war stories to be made into radio plays written by Irwin Shaw.

He was the deputy TASS bureau chief in Washington, D.C., and the FBI spent a lot of time and effort trying to identify who he was under his codename IDE.

He provided at least twenty leads of people for possible recruitment including Joseph Berger, a personal aide to the chairman of the Democratic National Committee, and I. F. Stone.