Mélanie Coste (born Delphine Dequin in 1976[a][1][2]), is a French former adult film actress.

[3] In 2001, she won a competition, organized by French trade magazine Hot Vidéo, to pose for an erotic photography session with Christophe Mourthé.

[2] From 2002 to 2003, Coste worked as an exclusive contract performer for Marc Dorcel productions, who had been looking for an equivalent to Clara Morgane.

With Coppula, she performed in Le journal de Pauline, which in 2003 she won the Venus Award for best actress.

[1][5] She retired from porn, after making less than 20 hardcore features, to pursue a relationship with journalist Philippe Vecchi.