Cristina Elisabet Fernández de Kirchner, often referred to by her initials CFK, is an Argentine lawyer and politician who served as president of Argentina from 2007 to 2015 and later as vice president of Argentina from 2019 to 2023 under President Alberto Fernández, as well as the first lady of Argentina during the tenure of her husband, Néstor Kirchner, from 2003 to 2007. She was the second female president of Argentina and the first elected female president of Argentina. Ideologically, she identifies herself as a Peronist and a progressive, with her political approach called Kirchnerism.

First Lady or First Gentleman of Argentina, also known as First Lady or First Gentleman of the Argentine Nation, is the unofficial and protocol title of the hostess or host of the Quinta de Olivos, and on special occasions of the Casa Rosada, usually the spouse of the sitting president of Argentina.