Sonia Margarita Escudero (born 14 December 1953, Salta) is an Argentine Justicialist Party politician.

She sat in the Argentine Senate representing Salta Province from 2001 to 2013.

Escudero qualified as a lawyer at the Catholic University of Salta and practiced law privately from 1977 to 1996.

She is Secretary General of the Latin American Parliament, serving as part of the Argentine delegation to that body.

Escudero sat in the governing Front for Victory block in the Senate until 20 February 2009 when her fellow Salta Senator Juan Carlos Romero announced that they would be leaving the majority block.