Union of Concerned Scientists

Union of Concerned Scientists
Formation1969
HeadquartersCambridge, Massachusetts, U.S.
Membershipover 200,000
President
Dr. Gretchen Goldman
Founder
Kurt Gottfried, Henry Way Kendall
Websitewww.ucs.org

The Union of Concerned Scientists (UCS) is a nonprofit science advocacy organization based in the United States. The UCS membership includes many private individuals in addition to professional scientists. Dr. Kim Waddell chairs the UCS Board of Directors as of 2025, having replaced Dr. Anne Kapuscinski.