Isabelle Maudet is a French voice actress primarily known for her work in the dubbing of animated series and films for the French market. Her career began after she undertook classical training in dramatic arts, with courses at the Cours Florent in 1984 and at the Théâtre du Rond-Point Renaud-Barrault from 1985 to 1989.

Her voice is characterized as belonging to the jeune adulte femme and adulte femme categories, with a medium to low tonal range. Maudet is also proficient in English and Spanish, and has received musical and vocal training.

Among her most recognized roles in animation is that of Princesse Asteria in the series Ninja Robots, also known as Tobikage. She is also known for voicing Mélanie Farell in the anime Dear Brother, known in French as Très Cher Frère. Maudet had a significant presence in the various Gundam Wing properties dubbed in France, lending her voice to multiple characters including Lady Une, Catherine Bloom, Dorothy Catalonia, and Mariemaia Barton-Kushrenada. Her other anime credits include roles in Dancougar as Luna and Laura, Nicky Larson as Emmanuelle, and the first Saint Seiya film as Mylène.

Beyond animation, her dubbing career encompasses a wide range of live-action television series. She provided the French voice for characters in long-running American shows such as Melrose Place (Jane Andrews Mancini), Queer as Folk (Melanie Marcus), Full House (several roles including Vicky Larson and Kathy Santoni), Friends (multiple roles), and New York Unité Spéciale (Kathy Stabler and Jennifer Fulton). She also voiced roles in British series like Inspecteur Barnaby.

In addition to her dubbing work, Isabelle Maudet has an extensive background in theater and operatic performance. She has been a co-founder of the Compagnie Teatr'Opera and has collaborated frequently with director Antoine Juliens on numerous theatrical oratorios and stage productions from the early 2000s through to 2021. Her stage work often involves a fusion of text and music, with performances in venues ranging from the Opéra-Théâtre in Metz to the Cathédrale Notre-Dame de Paris and various abbey sites in France and Belgium.