Delphine Liez is a French actress and voice artist known for her work in dubbing for French-language audiences. Her career began after she took theater courses in Paris, where she was exposed to a variety of directors and theatrical styles. She started performing in stage productions featuring works by playwrights such as Apollinaire, Brecht, and Prévert, and also participated in performances for young audiences as well as clown shows. Her on-screen acting credits include a role alongside Gérard Depardieu in the feature film The Man in the Iron Mask, directed by Randall Wallace, and a part in the television film Héritage oblige, directed by Maurice Frydland.

As a voice actor, Delphine Liez has dubbed actresses in numerous American television series. Her dubbing work in animation includes several notable titles. In the series Kaleido Star, she provided the voices for the characters Sarah and Marion. Her other animation voice roles include Youkino in Gate Keepers, Cookinelle and Mousse Arc-en-Ciel in Charlotte aux fraises, Kimi Watanabe-Fifrelin in Rugrats Go Wild, Princess Lilac in Barbie and the Magic of Pegasus, and Oléna the Octopus in The Save-Ums. She also contributed to the French dubbing of the film Harry Potter and the Deathly Hallows as the character Mary Cattermole.