Lustration in Poland is the policy of limiting the participation of former communists – especially of informants of the communist secret police – during 1944–1990, in successor governments or even in civil-service positions.
The term lustration, "cleansing", stems from the Latin word lustratio, for a Roman purification ceremony.
The first Polish lustration bill was passed by the Polish parliament in 1992, but was declared unconstitutional by the Constitutional Tribunal of the Republic of Poland. Subsequently other bills were submitted and reviewed by a special commission, resulting in a new lustration law passed in 1996.