María Inés Patricia Elizabeth Pilatti Vergara (born 2 August 1958) is an Argentine politician, currently serving as a National Senator for Chaco Province since 2013. She previously served as a National Deputy from 2009 to 2013, elected in Chaco as well, and as a member of the Chaco Province Chamber of Deputies during two non-consecutive terms from 1997 to 2001 and from 2005 to 2009.