Toussaint-Eugène-Ernest Mocker (16 July 1811 – 3 October 1895) was a French opera singer and stage director.
In his 30-year career as a principal singer at the Théâtre Impérial de l'Opéra-Comique he created numerous roles in the company's world premieres and from 1860 served as a stage director there.
In his later years he was a singing teacher at the Conservatoire de Paris.