Łukasz Ciepliński [Polish pronunciation: [ˈwukaʂ t͡ɕɛˈpliɲskʲi]] was a Polish soldier who fought in the Polish anti-Nazi and anti-communist resistance movements. He used various aliases: Pług, Ostrowski, Ludwik, Grzmot, and Bogdan. Ciepliński was executed at Mokotów Prison in Warsaw, with a shot to the back of the head by the Polish secret police, Urząd Bezpieczeństwa.

Mokotów Prison is a prison in Warsaw's borough of Mokotów, Poland, located at 37 Rakowiecka Street. It was built by the Russians in the final years of the foreign Partitions of Poland. During the Nazi German occupation and later, under the communist rule, it was a place of detention, torture and execution of the Polish political opposition and underground fighters. The prison continues to function, holding prisoners awaiting trial or sentencing, or those being held for less than one year.