Ivan Selin (born March 11, 1937) is an American businessman, and former chairman of the Nuclear Regulatory Commission and Under Secretary of State for Management.

[1] From 1960 to 1965, Selin was a research engineer at the RAND Corporation, working on national security issues and statistical communication theory.

From 1965 to 1970, Selin worked for McNamara, becoming Acting Assistant Secretary of Defense for Systems Analysis by the end of that period.

While serving in this capacity, Selin represented the Office of the Secretary of Defense at the commissioning of the USS Knox (FF-1052).

[3] On July 1, 1991, Selin became chairman of the Nuclear Regulatory Commission, serving in that capacity until he resigned on June 30, 1995.