Sizaire et Naudin was a French automobile manufacturer that operated from 1903 to 1921. It was founded by two brothers, Maurice and Georges Sizaire, and a family friend, Louis Naudin. The company produced "voiturette-style" cars that were first shown at the Paris Salon in 1905. In 1912, the Sizaire brothers left the company after a disagreement with an investor. Sizaire-Naudin continued for another decade without them. In 1913, the Sizaire brothers launched a new automobile manufacturing company called Sizaire-Berwick with the help of F. Berwick, the London-based UK importer of Corre La Licorne cars.