Hélène Otternaud is a French voice actor known for her work in the dubbing of anime series and films for the French-speaking market. Her career in voice acting spans several decades, with credits dating from the 1980s to the 2010s. She is primarily recognized for lending her voice to various characters in French adaptations of popular Japanese animated works.

One of her earlier notable roles was as the Narratrice in the French dub of the 1984 Japanese anime series Mori no Tonto-tachi, also known as L'Histoire du père Noël. This series, produced by Nippon Animation, is a classic example of her long-standing involvement in the industry. Her work often involves narrating stories or voicing maternal and supporting characters.

Otternaud's filmography includes significant contributions to the French versions of major anime franchises. She voiced multiple characters in the French adaptation of the long-running sports anime Touch, which was broadcast in France under the title Théo ou la batte de la victoire. Her roles in this series included the recurring character of the mother of the protagonist, Théo, as well as other characters such as Zoé, Cécile, and later, in various compilation films, characters named Mme Brendel, Françoise Rochefort, and Jane. This demonstrates her versatility in portraying a range of characters within a single universe over many years.

A more recent prominent achievement in her career is her participation in the French dub of the acclaimed Studio Ghibli film The Tale of the Princess Kaguya, released in France in 2014 as Le Conte de la princesse Kaguya. In this film, she took on the dual role of the Narratrice and the Femme du Coupeur de Bambou, further solidifying her association with voice-over work for prestigious animation projects. Her body of work reflects a consistent presence in the field of anime dubbing in France.