List of Mayors and Chiefs of Government of Buenos Aires
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A list of Mayors and Chiefs of Government of the city of Buenos Aires, Argentina's capital, since its federalization.
Its first Mayor (Spanish: Intendente) was Torcuato de Alvear, who was appointed, following the law of federalization of Buenos Aires, directly by president Julio Argentino Roca.
Since 1996, following the 1994 reform of the Argentine Constitution, the city gained autonomous status and now the Chiefs of Government (Jefe de Gobierno) of the city are elected by its citizens. The office of Vice-Chief (Vicejefe de Gobierno) was also created. The first Chief of Government to be elected was Fernando de la Rúa, who would later become President of Argentina.
In 2006, Chief Aníbal Ibarra was deprived of his position following impeachment regarding the Cromagnon nightclub tragedy, leaving Vice-Chief Jorge Telerman in charge of the office.
In the June 24, 2007 elections, Mauricio Macri became elect Chief of Government, winning in two-round system with 60.96% of the votes against Daniel Filmus.
| # | Chief | Entered Office | Exited Office | Vice-Chief | Notes |
| 1 | Fernando de la Rúa | August 6, 1996 | December 9, 1999 | Enrique Olivera | Resigned |
| 2 | Enrique Olivera | December 10, 1999 | August 6, 2000 | none | |
| 3 | Aníbal Ibarra | August 6, 2000 | December 10, 2003 | Cecilia Felgueras | Reelected |
| -- | Aníbal Ibarra | December 10, 2003 | March 7, 2006 | Jorge Telerman | Deposed by impeachment |
| 4 | Jorge Telerman | March 13, 2006 | December 11, 2007 | none | |
| 5 | Mauricio Macri | December 11, 2007 | Gabriela Michetti |