| Competition: | Copa Premier |
| Season: | 2009 |
| Winners: | Cortuluá (2nd title) |
| Promoted: | Cortuluá |
| Prevseason: | 2008 |
| Nextseason: | 2010 |
The 2009 Categoría Primera B season, officially known as the 2009 Copa Premier season for sponsorship reasons) was the 20th season since its founding as Colombia's second division football league.
| Team | City | Stadium | Capacity | |
|---|---|---|---|---|
| Academia | Bogotá | Estadio Compensar | 4,500 | |
| Alianza Petrolera | Barrancabermeja | Estadio Daniel Villa Zapata | 8,000 | |
| Atlético Bucaramanga | Bucaramanga | Estadio Alfonso López | 28,000 | |
| Atlético de la Sabana | Sincelejo | Estadio Arturo Cumplido Sierra | 5,000 | |
| Barranquilla | Barranquilla | Estadio Romelio Martínez | 20,000 | |
| Bogotá | Bogotá | Estadio Alfonso López Pumarejo | 15,000 | |
| Centauros | Villavicencio | Estadio Manuel Calle Lombana | 15,000 | |
| Cortuluá | Tuluá | Estadio Doce de Octubre | 16,000 | |
| Dépor | Cali | Estadio Pascual Guerrero | 45,195 | |
| Deportes Palmira | Palmira | Estadio Francisco Rivera Escobar | 9,000 | |
| Deportivo Rionegro | Rionegro | Estadio Alberto Grisales | 9,000 | |
| Expreso Rojo | Zipaquirá | Estadio Municipal Los Zipas | 2,000 | |
| Itagüí Ditaires | Itagüí | 12,000 | ||
| Juventud Soacha | Soacha | Estadio Luis Carlos Galán Sarmiento | 8,000 | |
| Patriotas | Tunja | Estadio de La Independencia | 20,000 | |
| Real Santander | Floridablanca | Estadio Álvaro Gómez Hurtado | 4,000 | |
| Unión Magdalena | Santa Marta | Estadio Eduardo Santos | 23,000 | |
| Valledupar | Valledupar | Estadio Armando Maestre Pavajeau | 10,000 |
----Tied 3–3 on aggregate, Cortuluá won on penalties.
----Atlético Bucaramanga won 3–2 on aggregate.
----Cortuluá won 4–1 on aggregate.
As the second worst team in the 2009 Categoría Primera A relegation table, Deportivo Pereira had to play a two-legged tie against Atlético Bucaramanga, the Primera B runners-up. As the Primera A team, Deportivo Pereira played the second leg at home. The winner competed in the Primera A for the 2009 season, while the loser competed in the Primera B.