Claire Antoine is a French lyric soprano. She studied with Jacques Schwarz at the Toulouse Conservatory and with Mireille Delunsch at the Conservatoire National Supérieur in Lyon. During her studies he was a freelance member of the chorus of the Théâtre du Capitole in Toulouse. From 2021 until 2023 she was a full-time member of the Opera Studio of Dutch National Opera. She performed the roles of the First Handmaid (Der Zwerg by Zemlinski), Dido (Dido and Aeneas) under the direction of Andreas Küppers, as well as the cover of Micaëla (Carmen).

In 2021, she was awarded as Talent Adami Classique, a very prestigious French distinction for young musicians. Currently she is one of 15 artists chosen by the Génération Opéra Association to be promoted during the coming two years. In May 2023 she made her debut as Lady Clarence, and cover of Catherine d’Aragon (Henry VIII by Saint-Saëns) at the Théâtre Royal de la Monnaie in Brussels. In June 2023 she performed the role of Mère Lidoine in Dialogues des Carmélites at Opéra Royal de Liège.