The Nasielsk Synagogue was a notable Wooden synagogue in Nasielsk, Poland. The synagogue was built in the late 17th century or early 18th century by Simcha Weiss, son of Shlomo of Luck. Deteriorating synagogue was demolished in 1880.
The first official inventory of important buildings in Poland, A General View of the Nature of Ancient Monuments in the Kingdom of Poland, led by Kazimierz Stronczynski from 1844–55, describes the Nasielsk Synagogue as one of Poland's architecturally notable buildings.
The main hall of the synagogue was square. There were wings on each side that served as women's prayer areas. A women's prayer balcony was added above the vestibule in 1857. The synagogue had a two-tiered roof with dormer windows. The ceiling is thought to have been vaulted. The exterior featured a second story balcony and a pair of corner pavilions that contained stairs to the women's gallery. The exterior featured unusually elaborate railings, pillars and cornice trim.