Kazimierz Badowski (15 August 1907, Regów Stary – 6 July 1990) was a Polish Communist activist.
Working as a docker in Gdańsk, he rose through the ranks of the trade union movement to become a figure in the Communist Party of Poland.
In 1925, he left the party in the face of what he saw as an increasingly Stalinist ideological outlook.
He was able to survive all of the Nazi concentration camps only to be imprisoned by Stalin in the early 1950s and again from 1962 to 1964.
He died in 1990, living his later years paralysed and unable to communicate.