Teresa De Sio (born 3 November 1952) is an Italian pop-folk singer and songwriter. She is the elder sister of actress Giuliana De Sio.

Teresa De Sio was born in Naples and grew up in Cava de' Tirreni, where her family was originally from. In 1976 she started her career as a vocalist with Eugenio Bennato and Musicanova, a group which focused on Neapolitan folk music.

In 1980 she launched her solo career with the album (Sulla terra sulla luna). Her second album Teresa De Sio, sung in Neapolitan, was met with critical and commercial success and sold over 500,000 copies in italy.^[3] Her third album Tre (1982), sold over 500,000 copies and reinforced her status as one of Italy's most promising talents; some of her well-known songs from this period include Voglia 'e turnà, Aumm aumm, 'E pazzielle, Terra 'e nisciuno and Ario'.

De Sio collaborated with Brian Eno for her next two albums, Africana (1985) and Sindarella suite (1988). In the 1990s her work became more politically engaged. In her 1995 album Un libero cercare she worked with Fabrizio De André and Fiorella Mannoia.

In 2003 performed, along with Stewart Copeland and Vittorio Cosma at "La Notte della Taranta" in Melpignano.^[4] In 2005 De Sio participated to the 62nd edition with the documentary Craj ^{[lower-alpha 1]} The film was directed by Davide Marengo, and went on to win the Lino Micciché Prize.^[5]