Sonia Ganassi (born 1966) is an Italian mezzo-soprano. Born in Reggio Emilia, she made her debut as Rosina in Rossini’s The Barber of Seville in Rome in 1992. She has performed in many of the world’s famous opera houses including the Metropolitan Opera in New York City, the Royal Opera House in London and the Teatro alla Scala, Milan. She is best known for her work in the bel canto repertoire. Her roles for Rossini's operas included Elisabetta, regina d'Inghilterra (ROF, 2004), as Elena in La donna del lago (Lady of the Lake) (Rossini in Wildbad, 2006), Ermione (ROF, 2008), Elcia in Mosè in Egitto (ROF, 2011)