Charles Simonneau (fl. c. 1803 - 1838) was a French engraver, map seller, and publisher active in Paris. In 1839, Longuet took over Simonneau's business, publishing as 'Longuet, Successor of Simonneau.' He published from 6 Rue de la Paix. He may or may not be a descendent of the 18th century engraver Charles-Louis Simonneau (1645 - 1728).