Claude Louis Langlois (13 June 1757 – c. 1845), known as Langlois de Sézanne, was a French portraitist and pastel artist. His portrait of Madame Morel is held by the Musée Antoine Vivenel, Compiègne. Born in Sézanne, he was the son of Claude Langlois and Marie Henriette Giffey. His works were displayed at different salons in Paris between 1806 and 1836 and at the Royal Academy in London in 1831, 1833, and 1841. He was the father of Claude Bernard Camille Langlois, whose works were displayed in 1831 and 1849. The latter's son Camille Langlois was exhibited in 1835 and 1849.