Nicolas-Jean Lefroid de Méreaux (1745–1797) was a French composer born in Paris. According to music critic François-Joseph Fétis, Méreaux studied music under French and Italian teachers before becoming the organist of the Church of Saint-Jacques-du-Haut-Pas. He wrote several motets for the church and had his oratorio Esther performed at the Concert Spirituel in 1775. His first published work was the cantata Aline, reine de Golconde in 1767. He went on to compose several operas.