Louis-Constantin Boisselot (11 March 1809 – 5 June 1850 in Marseille) was a French piano manufacturer. Franz Liszt was a long-time friend of the family and also his son's (Marie-Louis-François Boisselot (1845–1902)) godfather. Liszt received a Boisselot piano as a gift and used it for creating the Weimar years. A replica of the Liszt's personal Boisselot 1846 piano was created by 200 Liszt's celebration by a piano builder McNulty. Both original and the replica are property of the Klassik Stiftung Weimar.
Louis-Constantin Boisselot succeeded his father Jean-Louis Boisselot in the piano making business, which was successfully continued by next generations of the family until the late nineteenth century.