Arthur Lesieur Desaulniers (February 9, 1873 – July 16, 1954) was a merchant and political figure in Quebec.
He represented Champlain in the House of Commons of Canada from 1917 to 1930 as a Liberal.He was born in Louiseville, Quebec, the son of Alexis Lesieur Desaulniers and Oliva Pichette.