Lamoreaux () is an American English surname almost exclusively found in the United States, where it constitutes a variant of the more numerous French family name Lamoureux (; from French l'amoureux for "the loving one", "the amorous one", "the lover").
Notable people Notable people with this name include: J. Neal Lamoreaux (1889–1954), American politician Naomi Lamoreaux (born 1950), American economic historian Rosa Lamoreaux, American soprano Silas W. Lamoreaux (1843–1909), American lawyer Wilbur Lamoreaux (1907–1963), American speedway rider