Born in Saint-Germain-en-Laye, France, Antoine Mathieu is early attracted by the music and studies at first the cello and then approaches the operatic singing, in France and in Austria. He interpreted the role of Escamillo during the masterclass on Carmen by Viorica Cortez, then sang Albert's role in Werther under Teresa Berganza's artistic direction. With the Académie Lyrique in Vendôme he sang Figaro and Don Giovanni by Mozart.

On stage, Antoine Mathieu interpreted the Count in the Wedding of Figaro (Paris), Masetto in Don Giovanni (Euroculture festival in Auvergne), the Doctor Grenvil in la Traviata with the Symphony and Lyric Orchestra (Arts et Métiers in Paris)Figaro in the Wedding of Figaro (Paris, Albi), Escamillo in Carmen (Antibes), the title role of the Mikado (American Cathedral in Paris), Don Alfonso in Cosi fan tutte (Opéra-Studio of Geneva), Agamemnon in la Belle Hélène (Savigny), Belcore in l'Elisir d'Amore, Albert in Werther (Pézenas), André Thorel in Thérèse (Paris), Schaunard in La Bohème (Pézenas) and recently the Baron in the Parisian Life (Boulogne).

In concert, we were able to hear him in the part of solo baritone of the Duruflé's Requiem (Beynes), in the Schubert's Winter journey (theater André Malraux in Kremlin-Bicêtre and city hall of the 4th in Paris), in a concert with the great romantic duets of Donizetti and Bellini, as well as in series of representations of "les Grandes Voix de demain" with the CALM, the lyric center of the mediterranean basin. In March, 2013, it was invited to sing during three exceptional concerts with the young singers of the Bolchoï. In 2014 he participates in the Tremplin lyrique organized by the lyric Circle of Nîmes, interprets the part of solo baritone of the Duruflé's Requiem in the American Cathedral in Paris and joins the program Canto è soffio, to support the research on the respiratory health, presented at the Salpêtrière. In 2015 he is a soloist for the Ensemble Res Lyrica during several concerts Gounod in Parisian churches as the Billettes, the Trinity and the Madeleine. He sung recently the Fauré's Requiem in Melun and in Sens.