| Competition: | Primera B de Chile |
| Season: | 2017 |
| Winners: | Unión La Calera (3rd title) |
| Promoted: | Unión La Calera |
| Relegated: | Iberia |
| League Topscorer: | Sebastián Abreu Lucas Simón (11 goals each) |
| Matches: | 120 |
| Total Goals: | 314 |
| Prevseason: | 2016–17 |
| Nextseason: | 2018 |
The 2017 Primera B de Chile, known as the 2017 Campeonato de Transición Loto for sponsorship purposes, was the 64th season of Chile's second-tier football league. The competition began on 29 July 2017.[1]
| Club | City | Stadium | Capacity | |
|---|---|---|---|---|
| Barnechea | Lo Barnechea | Municipal de Lo Barnechea | 3,000 | |
| Cobreloa | Calama | Zorros del Desierto | 12,346 | |
| Cobresal | El Salvador | El Cobre | 12,000 | |
| Coquimbo Unido | Coquimbo | Municipal Francisco Sánchez Rumoroso | 18,750 | |
| Deportes Copiapó | Copiapó | La Calderaa | 3,000 | |
| Deportes La Serena | La Serena | La Portada | 18,243 | |
| Deportes Puerto Montt | Puerto Montt | Chinquihue | 10,000 | |
| Deportes Valdivia | Valdivia | Parque Municipal | 5,397 | |
| Iberia | Los Ángeles | Municipal de Los Ángeles | 4,150 | |
| Magallanes | San Bernardo | Municipal de San Bernardo | 3,500 | |
| Ñublense | Chillán | Municipal Nelson Oyarzún Arenas | 12,000 | |
| Rangers | Talca | Fiscal de Talca | 8,200 | |
| Arica | Carlos Dittborn | 9,746 | ||
| Santiago Morning | La Pintana | Municipal de La Pintana | 6,000 | |
| La Calera | Lucio Fariña Fernándezb | 7,680 | ||
| Unión San Felipe | San Felipe | Municipal de San Felipe | 12,000 |
a: Deportes Copiapó temporarily plays its home games at Estadio La Caldera in Caldera due to remodeling works at Estadio Luis Valenzuela Hermosilla.
b: Unión La Calera temporarily plays its home games at Estadio Municipal Lucio Fariña Fernández in Quillota due to remodeling works at Estadio Municipal Nicolás Chahuán Nazar.
| Rank | Name | Club | Goals | |
|---|---|---|---|---|
| 1 | Sebastián Abreu | Deportes Puerto Montt | 11 | |
 Lucas Simón | Cobreloa | 11 | ||
| align=center | 3 | Matías Campos López | San Marcos de Arica | 10 |
| 4 | David Escalante | Santiago Morning | 8 | |
| Rafael Viotti | Unión La Calera | 8 | ||
| 6 | Mauricio Gómez | Iberia | 7 | |
| Francisco Ibáñez | Deportes Copiapó | 7 | ||
| 8 |  Richard Barroilhet | Barnechea | 6 | |
| Ever Cantero | Cobresal | 6 |
Source: Soccerway
The promotion playoff was played by three teams: Santiago Wanderers, as the last-placed in the Primera División relegation table, 2016–17 Primera B runners-up San Marcos de Arica, and 2017 Primera B champions Unión La Calera. The two Primera B teams played each other with the winner qualifying to the final against the Primera División team for promotion to the top flight for the 2018 season.[2]
Relegation was determined at the end of the season by computing an average of the number of points earned per game over the two most recent seasons: 2016–17 and 2017. The team with the lowest average was relegated to the Segunda División Profesional.[2]
| width=28 | width=185 | Team | width=50 | width=50 | width=50 | width=50 | width=50 | Relegation | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | San Marcos de Arica | 50 | 20 | 70 | 43 | |||||||||
| 2 | Coquimbo Unido | 43 | 22 | 65 | 43 | |||||||||
| 3 | Cobreloa | 41 | 23 | 64 | 43 | |||||||||
| 4 | Barnechea | — | 22 | 22 | 15 | |||||||||
| 5 | Deportes La Serena | 40 | 19 | 59 | 43 | |||||||||
| 6 | Santiago Morning | 42 | 17 | 59 | 43 | |||||||||
| 7 | Deportes Copiapó | 32 | 26 | 58 | 43 | |||||||||
| 8 | Cobresal | — | 20 | 20 | 15 | |||||||||
| 9 | Magallanes | 36 | 21 | 57 | 43 | |||||||||
| 10 | Rangers | 40 | 13 | 53 | 43 | |||||||||
| 11 | Unión San Felipe | 32 | 20 | 53 | 43 | |||||||||
| 12 | 31 | 21 | 52 | 43 | ||||||||||
| 13 | Unión La Calera | 18 | 34 | 52 | 43 | |||||||||
| 14 | Ñublense | 29 | 18 | 47 | 43 | |||||||||
| 15 | Deportes Valdivia | 32 | 15 | 47 | 43 | |||||||||
| 16 | Iberia (R) | 28 | 18 | 46 | 43 | Relegation to Segunda División |