John Wojnowski (born 1943 in Warsaw, Poland) is an anti-pedophile activist who has maintained a one-man protest outside the Apostolic Nunciature in Washington DC since 1998. Wojnowski, a retired ironworker, stands on Massachusetts Avenue during afternoon rush hour holding signs with slogans such as "My Life Was Ruined by a Catholic Pedophile Priest" and "Pedophilia: Catholic Clergy's Sordid 'Professional Secret'".