List of mayors and chiefs of government of Buenos Aires
A list of Mayors and Chiefs of Government of the city of Buenos Aires, Argentina's capital, since its federalization.
Its first Mayor was Torcuato de Alvear, who was appointed, following the law of federalization of Buenos Aires, directly by President Julio Argentino Roca.
Following the 1994 amendment of the Argentine Constitution, the city gained autonomous status. The title of the city's chief executive was changed to Chief of Government, directly elected by the citizenry. The office of Vice-Chief was also created. However, in popular usage, especially outside of Argentina, the chief and vice-chief are often called mayor and vice-mayor, respectively.
The chief and vice chief are elected on a single ticket for a term of four years, with possibility of reelection. The first directly elected Chief of Government to be elected was Fernando de la Rúa, who was elected president three years into his term.
In 2006, Chief Aníbal Ibarra was removed from his position following impeachment regarding the Cromagnon nightclub tragedy, leaving Vice-Chief Jorge Telerman to take over the office.
In the June 24, 2007 elections, Mauricio Macri was elected Chief of Government, winning in the second round with 60.96% of the votes against Daniel Filmus. Horacio Rodríguez Larreta became mayor in 2015, after defeating Michetti in the primary elections and Martín Lousteau in a ballotage.
Mayors (1883–1996)
| # | Mayor | Entered Office | Exited Office | Appointed by President | Notes |
| 1 | Torcuato de Alvear | May 10, 1883 | May 10, 1887 | Julio A. Roca | |
| 2 | Antonio Crespo | May 24, 1887 | August 14, 1888 | Miguel Juárez Celman | |
| 3 | Guillermo Cranwell | August 14, 1888 | May 10, 1889 | Miguel Juárez Celman | Interim |
| 4 | Francisco Seeber | May 10, 1889 | June 4, 1890 | Miguel Juárez Celman | |
| 5 | Francisco F. Bollini | June 22, 1890 | October 31, 1892 | Carlos Pellegrini | |
| 6 | Juan José Montes de Oca | October 31, 1892 | November 7, 1892 | Luis Sáenz Peña | Interim |
| 7 | Miguel Cané | November 7, 1892 | June 7, 1893 | Luis Sáenz Peña | |
| 8 | Federico Pinedo | June 20, 1893 | August 20, 1894 | Luis Sáenz Peña | |
| 9 | Emilio Bunge | September 14, 1894 | September 12, 1986 | Luis Sáenz Peña | |
| 10 | Francisco Alcobendas | September 12, 1986 | September 14, 1898 | José E. Uriburu | |
| 11 | Martín Biedma | September 14, 1898 | October 20, 1898 | José E. Uriburu | Interim |
| 12 | Adolfo Bullrich | October 20, 1898 | October 20, 1902 | Julio A. Roca | |
| 13 | Alberto Casares | October 20, 1902 | October 20, 1904 | Julio A. Roca | |
| 14 | Carlos Roseti | October 20, 1904 | March 16, 1906 | Manuel Quintana | |
| 15 | Manuel Obarrio | March 16, 1906 | March 22, 1906 | José Figueroa Alcorta | Interim |
| 16 | Alberto Casares | March 22, 1906 | November 9, 1906 | José Figueroa Alcorta | |
| 17 | Manuel Obarrio | November 10, 1906 | February 7, 1907 | José Figueroa Alcorta | Interim |
| 18 | Carlos de Alvear | February 8, 1907 | January 7, 1908 | José Figueroa Alcorta | |
| 19 | Manuel Güiraldes | January 25, 1908 | October 12, 1910 | José Figueroa Alcorta | |
| 20 | Joaquín de Anchorena | October 20, 1910 | October 24, 1914 | Roque Sáenz Peña | |
| 21 | Enrique Palacio | October 26, 1914 | February 23, 1915 | Victorino de la Plaza | Interim |
| 22 | Arturo Gramajo | February 23, 1915 | November 14, 1916 | Victorino de la Plaza | |
| 23 | Joaquín Llambías | November 14, 1916 | November 14, 1919 | Hipólito Yrigoyen | |
| 24 | Saturnino García Anido | November 15, 1919 | December 3, 1919 | Hipólito Yrigoyen | Interim |
| 25 | José Luis Cantilo | December 5, 1919 | October 25, 1921 | Hipólito Yrigoyen | |
| 26 | Juan Bartneche | October 26, 1921 | October 13, 1922 | Hipólito Yrigoyen | |
| 27 | Virgilio Tedín Uriburu | October 13, 1922 | October 15, 1922 | Marcelo T. de Alvear | Interim |
| 28 | Carlos Noẽl | October 16, 1922 | May 3, 1927 | Marcelo T. de Alvear | |
| 29 | Horacio Casco | May 3, 1927 | October 12, 1928 | Marcelo T. de Alvear | |
| 30 | Adrián Fernández Casco | October 12, 1928 | November 14, 1928 | Hipólito Yrigoyen | Interim |
| 31 | José Luis Cantilo | November 15, 1928 | September 6, 1930 | Hipólito Yrigoyen | |
| 32 | José Guerrico | September 18, 1930 | February 20, 1932 | Félix Uriburu | |
| 33 | Rómulo Naón | February 20, 1932 | November 19, 1932 | Agustín P. Justo | |
| 34 | Mariano de Vedia y Mitre | November 19, 1932 | February 19, 1938 | Agustín P. Justo | |
| 35 | Arturo Goyeneche | February 20, 1938 | November 26, 1940 | Roberto M. Ortiz | |
| 36 | Raúl Savarese | November 26, 1940 | December 6, 1940 | Ramón Castillo | Interim |
| 37 | Carlos Alberto Pueyrredón | December 6, 1940 | June 11, 1943 | Ramón Castillo | |
| 38 | Ernesto E. Padilla | June 12, 1943 | June 15, 1943 | Pedro P. Ramírez | Interim |
| 39 | Basilio Pertiné | June 15, 1943 | April 5, 1944 | Pedro P. Ramírez | |
| 40 | César Caccia | April 12, 1944 | June 3, 1946 | Edelmiro Farrell | |
| 41 | Emilio Siri | June 6, 1946 | November 16, 1949 | Juan Perón | |
| 42 | Juan Debenedetti | November 26, 1949 | February 19, 1952 | Juan Perón | |
| 43 | Jorge Sabaté | February 20, 1952 | October 26, 1954 | Juan Perón | |
| 44 | Bernardo Gago | October 27, 1954 | September 23, 1955 | Juan Perón | |
| 45 | Miguel Madero | September 26, 1955 | June 8, 1956 | Eduardo Lonardi | |
| 46 | Luis María de la Torre Campos | June 8, 1956 | January 25, 1957 | Pedro E. Aramburu | |
| 47 | Eduardo Bergalli | January 26, 1957 | September 18, 1957 | Pedro E. Aramburu | |
| 48 | Ernesto Florit | September 20, 1957 | May 1, 1958 | Pedro E. Aramburu | |
| 49 | Roberto Etchepareborda | May 1, 1958 | May 13, 1958 | Arturo Frondizi | Interim |
| 50 | Hernán Giralt | May 14, 1958 | June 25, 1962 | Arturo Frondizi | |
| 51 | Alberto Prebisch | June 26, 1962 | October 13, 1963 | José María Guido | |
| 52 | Francisco Rabanal | October 17, 1963 | June 28, 1966 | Arturo Illia | |
| 53 | Eugenio Schettini | July 6, 1966 | September 6, 1967 | Juan Carlos Onganía | |
| 54 | Manuel Iricibar | September 8, 1967 | February 26, 1971 | Juan Carlos Onganía | |
| 55 | Tomás Caballero | March 1, 1971 | March 26, 1971 | Roberto Levingston | |
| 56 | Saturnino Montero Ruiz | March 31, 1971 | May 25, 1973 | Alejandro Lanusse | |
| 57 | Leopoldo Frenkel | June 4, 1973 | August 6, 1973 | Héctor Cámpora | |
| 58 | Juan Debenedetti | August 7, 1973 | August 27, 1973 | Raúl Lastiri | |
| 59 | José Embrioni | August 30, 1973 | March 23, 1976 | Raúl Lastiri | |
| 60 | Eduardo Crespi | March 24, 1976 | April 2, 1976 | Military Junta | |
| 61 | Osvaldo Cacciatore | April 2, 1976 | March 31, 1982 | Jorge Videla | |
| 62 | Guillermo del Cioppo | March 31, 1982 | December 10, 1983 | Leopoldo Galtieri | |
| 63 | Julio César Saguier | December 10, 1983 | January 13, 1987 | Raúl Alfonsín | |
| 64 | Facundo Suárez Lastra | January 14, 1987 | July 8, 1989 | Raúl Alfonsín | |
| 65 | Carlos Grosso | July 8, 1989 | October 26, 1992 | Carlos Menem | |
| 66 | Saúl Bouer | October 26, 1992 | September 5, 1994 | Carlos Menem | |
| 67 | Jorge Domínguez | September 5, 1994 | August 6, 1996 | Carlos Menem |