María Cristina Lustemberg Haro (born 12 January 1966) is a Uruguayan pediatrician and politician of the Broad Front.

[1] From 2005 to 2011, she worked in the public sector as head of the Childhood and Adolescence Area of the State Health Services Administration (ASSE).

She was elected to the Chamber of Representatives on Raúl Sendic Rodríguez's 711 list, of the Broad Front, for the term 2015–2020.

Redouble") was formed, led by Lustemberg and made up of leading members from other sectors of the Broad Front, independents, and citizens without prior party affiliation.

In addition, she was mentioned as a potential Minister of Social Development in the event that Daniel Martínez had been elected president.