The article entitled “Constitutional regulations of religious life in the Polish People’s Republic” is an analysis of the Polish People’s Republic legislation and its influence on religion. The first part presents eight years period before the Constitution of 1952 was passed, when legislation relating religion developed based on the July Manifesto and linked to regulations of the March Constitution of 1921. Then the author focuses on discussion between authorities, Catholic episcopate and constitutional lawyers, which directly relates to the July Constituion of 1952 regulations on religion, as well as further evolution of these regulations.