Primera B Metropolitana, also known as B Metro, is one of two professional leagues that form the third level of the Argentine football league system. The division is made up of 17 clubs mainly from the city of Buenos Aires and its metropolitan area, Greater Buenos Aires.

Originally created as the second division, it became the third level after a restructuring of the system in 1985 that ended with the creation of Primera B Nacional, set as the second division since then.

The other league at level three is the Torneo Federal A, where teams from regional leagues take part.

Format Primera B Metropolitana is currently organized so, during the course of a season, each club plays the others twice (a double round robin system), once at their home stadium and once at that of their opponents.

The team that gets the most points at the end of the season is recognized as the Primera B champion and is automatically promoted to Primera B Nacional. The teams that hold the second to fifth positions have the chance to enter the Torneo Reducido (small tournament) whose winner will be promoted.

The teams with the 2 lowest aggregate points total in Primera B Metropolitana are relegated to Primera C Metropolitana.

History Established in 1899, the Primera B Metropolitana (originally named "Segunda División") was the first second division championship in Argentine football. Some of the teams participating were youth or reserve teams of Primera División clubs. Since 1906, a promotion and relegation system was established. Porteño would be the first club to achieve promotion under those rules.

In 1911, the Association created the "División Intermedia" as a second level of Argentine football pyramid, therefore the Segunda División became the third division of the system. Three years later, San Lorenzo de Almagro promoted to Primera División after beating Honor y Patria. Tournaments organised by dissident Asociación Amateurs (AAm) were named "Extra". When both associations, AAmF and AAF merged in 1926, from the 1927 season, the "Primera División Sección B" (predecessor of Primera B) is created and the Segunda División was set as the fourth level (level of youth team), and Intermedia the third."De 1891 al presente: Los campeones de todos los niveles" , CIHF

In 1933, the Primera División Sección B and División Intermedia are eliminated and, its participants, become part of the Second Division and Third Division, which are again second and third level.

In 1949, the Primera División B was recreated and was contested by teams from the Segunda Division, which returned to the third level in 1950.

In 1986 the Argentine Association created the Primera B Nacional with the purpose of allowing clubs throughout Argentina to play official competitions. Primera B Nacional became the second division of Argentine football while Primera B was set as the third division, being also renamed "Primera B Metropolitana" due to it was contested by teams from the Buenos Aires metropolitan area (including Greater Buenos Aires)."Tercera División - Campeones" on AFA website, 11 Aug 2013 (Archive)

Primera B Metropolitana has received several names since its inception in 1899 as the second division of Argentine football. The following charts describe the changes made to the division since its creation:

Division levels Since its inception in 1899 as "Segunda División", the Primera B Metropolitana has changed levels (between 2 and 3) and names several times. The table below shows them in details: Year Level Promotion to Relegation to 1899–1910 Primera División (None) 1911–1926 Intermedia Tercera División 1927–1985 Primera División Tercera División 1986–present Primera Nacional Primera C

Current clubs (2026) Club City/Neighborhood Area Stadium Argentino Merlo Greater Buenos Aires Argentino de Merlo Argentino de Quilmes Quilmes Greater Buenos Aires Argentino de Quilmes Arsenal Sarandí Greater Buenos Aires Julio Grondona Brown Adrogué Greater Buenos Aires Lorenzo Arandilla Comunicaciones Agronomía City of Buenos Aires Alfredo Ramos Defensores Unidos Zárate Buenos Aires Province Gigante de Villa Fox Deportivo Armenio Ingeniero Maschwitz Buenos Aires Province República de Armenia Deportivo Laferrere Laferrere Greater Buenos Aires José Luis Sánchez Deportivo Merlo Merlo Greater Buenos Aires José Manuel Moreno Dock Sud Dock Sud Greater Buenos Aires de los Inmigrantes Excursionistas Belgrano City of Buenos Aires Estadio Excursionistas Fénix Pilar Buenos Aires Province (none) Ferrocarril Midland Libertad Greater Buenos Aires Ferrocarril Midland Flandria Jáuregui Buenos Aires Province Carlos V Liniers Gral. Villegas Greater Buenos Airee Juan Antonio Arias Real Pilar Pilar Buenos Aires Province Carlos Barraza Sacachispas Villa Soldati City of Buenos Aires Beto Larossa San Martín (B) Burzaco Greater Buenos Aires Francisco Boga Sportivo Italiano Ciudad Evita Greater Buenos Aires República de Italia UAI Urquiza Villa Lynch Greater Buenos Aires Monumental de Villa Lynch Villa Dálmine Campana Buenos Aires Province El Coliseo Villa San CarlosBerisso Greater Buenos Aires Genacio Sálice

List of champions The tournament has received different names since its first edition in 1899, such as "Segunda División" (1899–1926), "Primera División B" (or simply "Primera B", since 1927).

After the restructuring of the Argentine football league system in 1985, the tournament became the third division, changing its name to "Primera B Metropolitana" to set a difference with Primera B Nacional.Argentina second level champions - RSSSF

Ed. Season ChampionRunner-upSegunda División As Second Division tournament 1 1899 Banfield English High School 2 1900 Banfield English High School II 3 1901 Barracas A.C. Belgrano A.C. II 4 1902 Belgrano A.C. II Estudiantes (BA) 5 1903 Barracas A.C. II Estudiantes (BA) 6 1904 Barracas A.C. II Alumni II 7 1905 América Belgrano A.C. 8 1906 Estudiantes (BA) Estudiantil Porteño 9 1907 Nacional (Floresta) River Plate 10 1908 River Plate Racing 11 1909 Gimnasia y Esgrima (BA) San Isidro 12 1910 Racing Boca Juniors As Third Division tournament 13 1911 Riachuelo Olivos 14 1912 Banfield 1912 Tigre Vélez Sarsfield 15 1913 Ferro Carril Oeste 1913 Estudiantes (LP) 16 1914 San Lorenzo Germinal 1914 Tigre 17 1915 Martínez 18 1916 Huracán San Telmo 19 1917 Sportivo Palermo Almagro 20 1918 San Fernando Del Plata 21 1919 El Porvenir 1919 Sportivo Barracas 22 1920 Sportivo Avellaneda 1920 Oriente del Sud 23 1921 Huracán 1921 Villa Crespo Rañó24 1922 Central Argentino 1922 Nacional (Adrogué) 25 1923 Bristol 1923 Acassuso 26 1924 Leandro N. Alem 1924 Racing 27 1925 Sportivo Balcarce 1925 Perla del Plata Sportivo Palermo28 1926 Libertad Mariano Moreno1926 Racing Villa FischerPrimera B As Second Division tournament 29 1927 El Porvenir Argentino (B) 30 1928 Colegiales Temperley 31 1929 Honor y Patria Porteño 32 1930 Nueva Chicago All Boys 33 1931 Liberal Argentino All Boys 1931 34 1932 Dock Sud Sportivo Balcarce 1932 Segunda División35 1933 Ramsar 25 de Mayo1933 36 1934 Bella Vista Los Andes 1934 River Plate II San Lorenzo II 37 1935 Estudiantes (LP) II Independiente II 38 1936 Boca Juniors II San Lorenzo II 39 1937 Almagro Excursionistas 40 1938 Argentino (Q) Quilmes 41 1939 Banfield All Boys 42 1940 Argentinos Juniors Acasusso 43 1941 Chacarita Juniors Colegiales 44 1942 Rosario Central Excursionistas 45 1943 Vélez Sarsfield Unión 46 1944 Gimnasia y Esgrima (LP) Tigre 47 1945 Tigre Argentino (R) 48 1946 Banfield Gimnasia y Esgrima (LP) 49 1947 Gimnasia y Esgrima (LP) Quilmes 50 1948 Primera División B 51 1949 Quilmes Colón 52 1950 Lanús Colón 53 1951 Rosario Central Colón 54 1952 Gimnasia y Esgrima (LP) Tigre 55 1953 Tigre Atlanta 56 1954 Estudiantes (LP) Argentinos Juniors 57 1955 Argentinos Juniors Unión 58 1956 Atlanta Central Córdoba (R) 59 1957 Central Córdoba (R) Platense 60 1958 Ferro Carril Oeste Nueva Chicago 61 1959 Chacarita Juniors Quilmes 62 1960 Los Andes Tigre 63 1961 Quilmes Banfield 64 1962 Banfield Platense 65 1963 Ferro Carril Oeste Sarmiento (J) 66 1964 Lanús Platense 67 1965 Colón Quilmes 68 1966 Unión Argentino (Q) 69 1967 Defensores de Belgrano Tigre 70 1968 Almagro Nueva Chicago 71 1969 Ferro Carril Oeste San Telmo 72 1970 Ferro Carril Oeste Almirante Brown 73 1971 Lanús Arsenal 74 1972 All Boys Almirante Brown 75 1973 Banfield Temperley 76 1974 Temperley Unión 77 1975 Quilmes San Telmo 78 1976 I Platense Lanús1976 II Lanús Almirante Brown 79 1977 Estudiantes (BA) Los Andes 80 1978 Ferro Carril Oeste Almirante Brown 81 1979 Tigre Sportivo Italiano 82 1980 Sarmiento (J) Atlanta 83 1981 Nueva Chicago Quilmes 84 1982 San Lorenzo Atlanta 85 1983 Atlanta Chacarita Juniors 86 1984 Deportivo Español Defensores de Belgrano 87 1985 Rosario Central San MiguelPrimera B Metropolitana As Third Division tournament 88 1986–87 Quilmes Almirante Brown 89 1987–88 Talleres (RE) Almagro 90 1988–89 Villa Dálmine Argentino (R) 91 1989–90 Deportivo Morón Atlanta 92 1990–91 Central Córdoba Almagro 93 1991–92 Ituzaingó Los Andes 94 1992–93 All Boys Sarmiento (J) 95 1993–94 Chacarita Juniors Los Andes 96 1994–95 Atlanta Tigre 97 1995–96 Sportivo Italiano Estudiantes (BA) 98 1996–97 Defensa y Justicia San Miguel 99 1997–98 El Porvenir Tigre 100 1998–99 Argentino (R) Temperley 101 1999–00 Estudiantes (BA) Sarmiento (J) 102 2000–01 Defensores de Belgrano Temperley 103 2001–02 Deportivo Español Ferro Carril Oeste 104 2002–03 Ferro Carril Oeste All Boys 105 2003–04 Sarmiento (J) Atlanta 106 2004–05 Tigre Platense 107 2005–06 Platense Deportivo Morón 108 2006–07 Almirante Brown Estudiantes (BA) 109 2007–08 All Boys Los Andes 110 2008–09 Sportivo Italiano Deportivo Merlo 111 2009–10 Almirante Brown Sarmiento 112 2010–11 Atlanta Estudiantes (BA) 113 2011–12 Sarmiento (J) Nueva Chicago 114 2012–13 Villa San Carlos Platense 115 2013–14 Nueva Chicago Temperley 116 2014 (no champion crowned) – 117 2015 Brown (A) Estudiantes (BA) 118 2016 Flandria Atlanta 119 2016–17 Deportivo Morón Deportivo Riestra 120 2017–18 Platense Estudiantes (BA) 121 2018–19 Barracas Central Atlanta 122 2019–20 123 2020 Almirante Brown J. J. de Urquiza 124 2021 Flandria Colegiales 125 2022 Defensores Unidos Villa San Carlos 126 2023 Talleres (RE) San Miguel 127 2024 Colegiales Los Andes 128 2025 Ferrocarril Midland Real Pilar

Titles by club This list include all the titles won with both, senior and reserve teams.