Naleczów is a spa town (population 4,800) situated on the Naleczów Plateau in Poland's Lublin Province.

In the 18th century, the discovery there of healing waters initiated the development of a health resort; the main treatments are for circulatory disorders. Naleczów belongs to Lesser Poland.

Notable landmarks include the 18th-century baroque-classicist Malachowski Palace (1771-73, since remodeled) and a park and resort complex dating from the 18th-19th centuries.

Naleczów was the favorite vacationing place of novelist Boleslaw Prus for three decades from 1882 till his death in 1912. It features museums devoted to Prus and to novelist Stefan Zeromski, a fellow frequent visitor whose literary career Prus generously furthered.

The local Jewish population was 250-400 Jews in 1939. In the spring of 1942, Naleczów was used as a transfer point by the occupying Germans, who herded area Jews onto cattle rail cars, to be transported to both Belzec and Sobibor death camps. The Jewish community ceased to exist.