Sonya Scarlet (born 2 April 1980) is the singer and lyricist of the Italian extreme gothic metal band Theatres des Vampires.

Sonya studied ballet at the Santa Cecilia Academy from the age of 4, later deciding to study opera singing at the academy. She joined the band as a backing vocalist with Justine in 1999, but Justine left in 2002. In late 2004 Lord Vampyr left the band and Sonya became the sole vocalist of the band. She was one of the songwriters for the band on the album Desire Of Damnation. In 2008 Sonya suffered a breakdown, which led to a hiatus in the band's career. Scarlet has an original appearance which often draws fans to their live shows, but appearances are often controversial in the countries in which she plays.