Charles Clément Balvay (23 May 1756, Paris - 23 March 1822, Paris), known as Bervic, was a French engraver mainly working in intaglio and exclusively in burin. Due to an error in transcribing the baptismal register, he is also now known as Jean Guillaume Balvay.
He served his first apprenticeship under Jean-Baptiste Le Prince, then left aged 14 for the studio of the engraver Jean-Georges Wille. Aged 18 he won first prize for drawing at the Académie royale de peinture et de sculpture, of which he was elected a member in 1784. He became a member of the Académie des beaux-arts in 1803. He won many prizes and his drawing talents were particularly appreciated.