B
| Senator | Years | Province | Party |
|---|---|---|---|
| Raúl Baglini | 2001 - 2003? | Mendoza | Radical Civic Union |
| Santiago Baibiene | 1880 - 1889 | Corrientes | |
| José Baltore | 1880 - 1889 | Entre Ríos | |
| Graciela Bar | 2001 - 2007 | Entre Ríos | Justicialist Party |
| Juan Barbeito | 1892 - 1901 | San Luis | |
| Adolfo Barbich | 1963 - 1966 | Santa Cruz | UCRP |
| Yamili Bárbora de Nasif | 1973 - 1976 | Santa Fe | Frejuli |
| Alberto Barceló | 1942 - 1943 | Buenos Aires | Conservative |
| José Barcena | 1854 - 1859 1863 - 1868 1875 - 1886 |
Jujuy | |
| Gerónimo del Barco | 1864 - 1868 | Santa Fe | |
| Danilo Baroni | 1973 - 1976 | Chaco | Frejuli |
| Federico de la Barra | 1856 - 1857 1860 - 1861 |
San Juan | |
| Pedro Barraza | 1895 - 1901 | Santiago del Estero | |
| José Luis Barrionuevo | 2001 - 2003? | Catamarca | Justicialist Party |
| Nicolás Barros | 1881 - 1889 1895 - 1896 |
La Rioja | |
| Mario Bartolucci | 1997 - 1998 | San Luis | Justicialist Party |
| Juan Carlos Basaldúa | 1946 - 1952 | Entre Ríos | |
| Ricardo Bassi | 1963 - 1966 | Buenos Aires City | UCRP |
| José Bauducco | 1963 - 1966 | La Pampa | UDELPA |
| Daniel Baum | 1995 - 2001 | Neuquén | Justicialist Party |
| Eduardo Bauza | 1996 - 2001 | Mendoza | Justicialist Party |
| Ernesto Bavio | 1946 - 1952 | Salta | |
| Servando Bayo | 1881 - 1884 | Santa Fe | |
| Augusto Bayol | 1958 - 1962 | Santa Fe | |
| Abel Bazán | 1864 - 1880 | La Rioja | |
| Eduardo Bazán | 1958 - 1962 | Catamarca | |
| Miguel Ángel Bazán | 1952 - 1955 | La Rioja | |
| Raúl Beascochea | 1961 - 1962 | La Pampa | |
| Emilio Belenguer | 1973 - 1976 | Río Negro | Frejuli |
| Tiburcio Benegas | 1886 - 1887 1895 - 1904 |
Mendoza | |
| Juan Carlos Beni | 1973 - 1976 | Santa Cruz | Frejuli |
| Apolinario Benítez | 1871 - 1875 | Entre Ríos | |
| Antonio Berhongaray | 1983 - 1989 1995 - 1999 |
La Pampa | Radical Civic Union |
| Norma Bermejo | 2003 | Córdoba | Labour |
| Miguel Ángel Bernardo | 1963 - 1966 | San Luis | Intransigent Radical Civic Union |
| Alfredo Bertín | 1958 - 1962 | San Luis | |
| José María Bértora | 1958 - 1962 | Entre Ríos | Intransigent Radical Civic Union |
| Pablo Biain | 1958 - 1962 | Chaco | |
| Eufemio Blanco | 1973 - 1976 | La Rioja | Frejuli |
| Eusebio Blanco | 1864 - 1874 | Mendoza | |
| Ramón Blanco | 1955 |
Santiago del Estero | |
| Rubén Blanco | 1963 - 1966 | Buenos Aires | UCRP |
| José Octavio Bordón | 1992 - 1996 | Mendoza | Justicialist Party |
| Alberto Borella | 1962 | Santa Fe | |
| Juan Francisco Borges | 1860 - 1861 1862 - 1874 |
Santiago del Estero | |
| Francisco de Borja Correa | 1863 - 1868 | Mendoza | |
| Ricardo Branda | 1992 - 2001 | Formosa | Justicialist Party |
| Federico Bravo | 1966 | San Juan | Blockist Party |
| Leopoldo Bravo | 1973 - 1976 1986 - 2001 |
San Juan | Blockist Party |
| Mario Bravo | 1923 - 1930 1932 - 1938 |
Buenos Aires City | Socialist Party |
| Blas Brisoli | 1952 - 1955 | Mendoza | |
| Guillermo Brizuela | 1973 - 1976 | Catamarca | Federalist Popular Alliance |
| Hugo Genaro Brizela | 1973 - 1976 | Jujuy | Frejuli |
| Eduardo Brizuela del Moral | 2001 - 2003 | Catamarca | Radical Civic Union |
| Vicente Brizuela Nieto | 1955 | La Rioja | Peronist |
| Carlos Bruchmann | 1932 - 1938 | Santiago del Estero | Socialist |
| Duilio Brunello | 1955 | Catamarca | |
| Juan Bullo | 1922 | Santa Fe | |
| Alfredo Busquet | 1946 - 1949 | Buenos Aires | |
| Ricardo Bussi | 2003 - 2007 | Tucumán | Republican Force Tucumán |
| Jorge Busti | 2001 - 2003 | Entre Ríos | Justicialist Party |
| Francisco Bustos | 1889 - 1895 | La Rioja |
Read more about this topic: List Of Former Argentine Senators