Néstor Kirchner, Argentinian lawyer and politician, 51st President of Argentina (born 1950)

Néstor Carlos Kirchner Ostoić was an Argentine lawyer and politician who served as the president of Argentina from 2003 to 2007. A member of the Justicialist Party, he previously served as Governor of Santa Cruz Province from 1991 to 2003, and mayor of Río Gallegos from 1987 to 1991. He later served as first gentleman of Argentina during the early tenure of his wife, Cristina Fernández de Kirchner, the first person to serve in this role. Ideologically, he identified himself as a Peronist and a progressive, with his political approach called Kirchnerism.

The president of Argentina, officially known as the president of the Argentine Nation, is both head of state and head of government of Argentina. Under the national constitution, the president is also the chief executive of the federal government and commander-in-chief of the armed forces.