The Church of Our Lady of Laeken (French: Église Notre-Dame de Laeken; Dutch: Onze-Lieve-Vrouwekerk van Laken) is a neo-Gothic Roman Catholic church in the Brussels district of Laeken, Belgium. It was originally built in memory of Queen Louise-Marie, wife of King Leopold I to the design of architect Joseph Poelaert.

Louise-Marie died in Ostend in 1850 and wished to be buried in Laeken. The nearby Royal Castle of Laeken was, and still is, the royal residence. Leopold I wished the church to be constructed in her memory and as a mausoleum for her. The architect Joseph Poelaert was chosen to design the new church. (He later became best known for the Law Courts of Brussels.)