María Cristina del Valle Fiore Viñuales (born 16 February 1974), better known as Cristina Fiore, is an Argentine politician, currently serving as a member of the Chamber of Deputies of Salta Province. She previously served as a National Senator (2013–2019) and a National Deputy (2011–2013) for Salta. Fiore is the leader of the provincial Salta Renewal Party.