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.

[1][2][3][4][5] Roles created by Mocker at the Opéra-Comique include:[6]