It was founded in 1957 by Joseph Rotblat and Bertrand Russell in Pugwash, Nova Scotia, Canada, following the release of the Russell–Einstein Manifesto in 1955.
Selle asutasid 1957. aastal Joseph Rotblat ja Bertrand Russell Pugwashi külas Nova Scotia provintsis Kanadas pärast Russelli-Einsteini manifesti avaldamist 1955. aastal.