Chantal Thomas studied at the École des Beaux Arts in Dijon and subsequently at the École des Arts Décoratifs in Paris. She received her diploma as a set designer in 1982, and in 1984 she established a set design workshop in Paris. She created her first original sets in 1987 for productions by Jean-Louis Martin-Barbaz.
Since 1988 Chantal Thomas has collaborated with stage director Laurent Pelly, for whom she has designed almost forty productions of plays (Le Roi nu after Yevgeny Schwartz, Jacques ou la soumission after Eugène Ionesco, Talking Heads after Alan Bennett and Mille francs de récompense after Victor Hugo), shows (Et Vian! En avant la zique! , Grande Halle de La Villette) and operas (Orphée aux Enfers (Grand Théâtre de Genève, Opéra de Lyon), La Belle Hélène (Théâtre du Châtelet, Santa Fe Opera, English National Opera), Les Contes d’Hoffmann (Grand Théâtre de Lausanne, Opéra de Lyon), Platée, Les Sept péchés capitaux, Les Boréades (Opéra de Lyon, Zurich Opera), La Grande Duchesse de Gérolstein (Théâtre du Châtelet), The Love for Three Oranges (Amsterdam), La Vie parisienne (Opéra de Lyon), La Fille du régiment (Covent Garden, Metropolitan Opera, Wiener Staatsoper, San Francisco Opera, Teatro Liceu), La Voix humaine and Duke Bluebeard’s Castle (Opéra de Lyon), Pelléas et Mélisande (Theater an der Wien), La traviata (Santa Fe Opera and Turin) and Manon (Covent Garden). Chantal Thomas has also worked with stage directors including Michel Hermon, Étienne Pommeret, Frédéric Bélier-Garcia, Denise Chalem (Dis à ma fille que je pars en voyage), Mirella Giardelli, Laura Scozzi and Michel Rostain (costume designs).
At the Opéra National de Paris Chantal Thomas has collaborated on productions of Platée (1999), Les Sept péchés capitaux (2001), Ariadne auf Naxos (2003) and L’elisir d’amore (2006). The designer’s plans include Giulio Cesare at the Opéra National de Paris.