| Competition: | Torneo Águila |
| Dates: | 12 February – 6 December 2017 |
| Season: | 2017 |
| Winners: | Boyacá Chicó (2nd title) |
| Promoted: | Boyacá Chicó Leones |
| Biggest Home Win: | |
| Highest Scoring: | |
| Matches: | 286 |
| Total Goals: | 685 |
| League Topscorer: | Apertura: Erwin Carrillo and Gustavo Torres (9 goals each) Finalización: Jeison Medina and Jhon Velásquez (10 goals each) Season: Erwin Carrillo and Jeison Medina (18 goals each) |
| Prevseason: | 2016 |
| Nextseason: | 2018 |
The 2017 Categoría Primera B season (officially known as the 2017 Torneo Águila season for sponsorship reasons) was the 28th season since its founding as Colombia's second division football league.
For this season, the league switched from the 'one tournament per year' format used in the two most recent seasons to a 'two tournaments per year' one. The season will consist of two tournaments: the 'Torneo Apertura' and the 'Torneo Finalización'. Both were divided into three stages. The First Stage was contested on a home-and-away basis, with each team playing the other teams once and playing a regional rival once more. The top eight teams after the sixteen rounds advanced to a knockout round, where they were pitted into four ties to be played on a home-and-away basis, with the four winners advancing to the semifinals and the winner of each semifinal advancing to the final of the tournament, which was played on a home-and-away basis as well.
The winners of both finals qualified for the season final which was played after the conclusion of the Torneo Finalización and also consisted of two legs, with its winner being promoted to the Categoría Primera A for the 2018 season. The season runner-up would have to play the best team in the aggregate table (other than the champion) on a home-and-away basis for the second promotion berth. In case a team won both the Apertura and Finalización tournaments, it would be promoted and the second promoted team would have been the winner of the double-legged series between the next two best teams in the aggregate table, however, if the season runner-up ended up as the best team in the aggregate table, it would also be promoted and the promotion play-off would not be played.[1]
16 teams took part, fourteen of them returning from last season plus Boyacá Chicó and Fortaleza, who were relegated from the 2016 Primera A. The former played in the second tier after 13 years while the latter returned after one season in the top flight. Both teams replaced América de Cali and Tigres who earned promotion at the end of the last season.
| Club | Home city | Stadium | 2016 season | |
|---|---|---|---|---|
| Atlético | Cali | Pascual Guerrero | align=center | 16th |
| Barranquilla | Barranquilla | Metropolitano Roberto Meléndez | align=center | 12th |
| Bogotá | Bogotá | Metropolitano de Techo | align=center | 8th |
| Boyacá Chicó | Tunja | La Independencia | 20th (Primera A) | |
| Cúcuta Deportivo | Cúcuta | General Santandera | 10th | |
| Deportes Quindío | Armenia | Centenario | align=center | 6th |
| Deportivo Pereira | Pereira | Hernán Ramírez Villegas | align=center | 1st |
| Fortaleza | Bogotá | Municipal Héctor El Zipa González | align=center | 19th (Primera A) |
| Leones | Metropolitano Ciudad de Itagüí | align=center | 5th | |
| Llaneros | Villavicencio | Manuel Calle Lombana | align=center | 15th |
| Orsomarso | Palmira | Francisco Rivera Escobar | align=center | 11th |
| Real Cartagena | Cartagena | Jaime Morón León | align=center | 3rd |
| Real Santander | Floridablanca | Álvaro Gómez Hurtado | align=center | 14th |
| Unión Magdalena | Santa Marta | Diego de Carvajalb | align=center | 13th |
| Universitario | Popayán | Ciro López | align=center | 7th |
| Valledupar | Valledupar | Armando Maestre Pavajeau | align=center | 9th |
|}
|}
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| Rank | Name | Club | Goals |
|---|---|---|---|
| 1 |  Erwin Carrillo | Cúcuta Deportivo | 9 |
| Gustavo Torres | Deportes Quindío | 9 | |
| 3 | Juan Sebastián Herrera | Barranquilla | 8 |
| Junior Murillo | Orsomarso | 8 | |
| Luis Ferney Ríos | Real Santander | 8 | |
| Diego Valdés | Boyacá Chicó | 8 | |
| 7 | Roger Lemus | Real Santander | 7 |
| Jeison Medina | Leones | 7 | |
| Misael Riascos | Boyacá Chicó | 7 | |
| Jader Valencia | Bogotá | 7 |
Source: Resultados.com
|}
|}
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| Rank | Name | Club | Goals | |
|---|---|---|---|---|
| 1 | Jeison Medina | Leones | 10 | |
| Jhon Velásquez | Llaneros | 10 | ||
| align=center | 3 | Erwin Carrillo | Cúcuta Deportivo | 9 |
| 4 | Mario Álvarez | Llaneros | 7 | |
| Diego Echeverri | Cúcuta Deportivo | 7 | ||
| José Hugo Palacios | Llaneros | 7 | ||
| Luis Ferney Ríos | Real Santander | 7 | ||
| Juan José Salcedo | Real Cartagena | 7 | ||
| 9 | Ethan González | Barranquilla | 6 | |
| Juan Camilo Zapata | Valledupar | 6 |
Source: Resultados.com
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Since the season runners-up Leones also ended up as the best team in the aggregate table, they earned automatic promotion to the Categoría Primera A and the promotion play-off was not played.