| Clubname: | Unión San Felipe |
| Fullname: | Club de Deportes Unión San Felipe |
| Nickname: | Uni-Uni Aconcagüinos |
| Ground: | Estadio Municipal de San Felipe |
| Capacity: | 12,000[1] |
| Chairman: |  Raúl Delgado |
| Manager: | Ricardo González |
| League: | Primera B |
| Season: | 2023 |
| Position: | 8th |
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Unión San Felipe is a Chilean football club, their hometown is San Felipe in the V Región of Valparaíso. They play in the second level of the Chilean football league, the Primera B.
The club was founded on October 16, 1956 with the merger of Internacional and Tarcisio.
In November 2009, the club won the Copa Chile, their second major title, after beating Deportes Iquique in the final 3–0. With this victory, they gained qualification for the 2010 Copa Sudamericana, beating LDU Quito 4–2 in the first leg, but losing 6–1 in Ecuador and being eliminated.
The club is the only team in Chile ever to win the second level and then the first level in consecutive seasons (1970 and 1971).[2]
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1970, 2000, 2009 Apertura, 2009 season
| Season | Competition | Round | Country | Club | Home | Away | Aggregate |
|---|---|---|---|---|---|---|---|
| 1972 | Copa Libertadores | Group Stage Group 4 | Universidad de Chile | 3–2 | 1–2 | 4th Place | |
 | Alianza Lima | 0–0 | 0–1 | ||||
| Universitario | 1–3 | 0–0 | ||||
| 2010 | Second Round | Guaraní | 1–1 | 1–1 | 2–2 8-7p | ||
| Third Round |  | L.D.U. Quito | 4–2 | 1–6 | 5–8 | ||
Julio Baldovinos (1961) Julio Baldovinos (1964) Julio Baldovinos (1974) Julio Baldovinos (1982-1983) Julio Baldovinos (1984) Julio Di Meola (1998-1999) César Laraignée (1999) Ariel Paolorossi (2006) Daniel Chazarreta (2007-2008) (2008-2009) Gustavo Cisneros (2010) Daniel Chazarreta (2011) Víctor Hugo Marchesini (2011) Daniel Chazarreta (2012) Gustavo Cisneros (2013) Sebastián Rambert (2014) César Vigevani (2015) Germán Corengia (2015-2016) (2016) César Vigevani (2017) Damián Ayude (2017-2018) (2018) Andrés Yllana (2019) Mauro Peralta (2019) Germán Corengia (2019) Tomás Arrotea (2021) Germán Cavalieri (2023) (2023) Cristián Lovrincevich (2024)