Piotr Śmietański (27 June 1899 – 23 February 1950), was a Polish non-commissioned officer and Communist functionary in the Ministry of Public Security and executioner at Mokotów Prison. Śmietański was stationed at the Mokotów Prison in the Warsaw borough of Mokotów (Polish: Więzienie mokotowskie) known also as Rakowiecka Prison located at 37 Rakowiecka Street. From World War II until the collapse of the Eastern Bloc in 1989, Mokotów Prison—where Śmietański conducted his deeds—was a place of detention, torture and execution of the Polish anti-communist opposition.