María Teresa Fernández de la Vega Sanz (born 15 June 1949) is a Spanish politician and magistrate of the Socialist Party.

Fernández de la Vega is the daughter of Wenceslao Fernández de la Vega Lombán who was a public servant during Franco's dictatorship, a delegate of the ministry of employment headed at that time by Fermín Sanz Orrio (1957–1962).

[3] In 1974 she entered Spain's Cuerpo de Secretarios Jurídicos Laborales, a specialised body of the civil service.

Fernández de la Vega started her political career in the Unified Socialist Party of Catalonia, remaining a member of it until 1979.

In March 2006, the first vice president went on an African tour with the state secretary for cooperation, Leire Pajín, visiting Kenya and Mozambique, in whose capital, Maputo, they celebrated International Women's Day and closed the forum "Spain-Africa: Women for a better world".