L. Guilmin (fl. c. 1890 - c. 1933) was a French map and book publisher active in the late 18th and early 19th century. Guilmin has a large corpus of work, but remains personally obscure. His maps begin appearing in the 1890s and continue to appear until the 1930s. He is sometimes associated with A. Leconte and L. Joly, two other prominent Parisian publishers of the period. At various time he had offices at 90 Boulevard Voltaire, 63 Boulevard Voltaire, and 38 Rue Sainte-Croix-de-la-Bretonnerie.