Eduardo Alberto Duhalde (Spanish pronunciation: [eˈðwarðo alˈβerto ˈðwalde]; born October 5, 1941) is an Argentine politician, lawyer and professor of public law, who also was President of Argentina from 2002 to 2003.

Duhalde was born in Lomas de Zamora, in the Greater Buenos Aires. He graduated as a lawyer in 1970. He became intendent of Lomas de Zamora in 1973, but left government three years later during the National Reorganization Process military coup. Democratic rule was restored in 1983, and Duhalde was elected intendent once more. Duhalde told in 2010 at the Noticias magazine that a coronel sought his support for a possible coup against the newly elected president Raúl Alfonsín, which Duhalde would have denied and reported directly to Alfonsín himself.

In 1987 he became a member of the Argentine National Congress and became vice-president under Carlos Menem from 1989 to his resignation in 1991. In 1991 he won the first of two terms as governor of Buenos Aires.

He ran for president in 1999, after a failed attempt by Carlos Menem to run for a third term, but he was defeated by Fernando de la Rúa. Duhalde came in second place with 37% of the vote. De la Rúa's government would face an economic crisis and the 2001 riots, resigning two years later. De la Rúa considered that Duhalde organized a coup d'état against himRodolfo Terragno, De la Rúa's Chief of the Cabinet of Ministers, thought instead that the crisis was the exclusive result of keeping the peso-dollar parity despite of the costs generated by it.