Guillermo Rivera Aránguiz
| Full name | Guillermo Andrés Rivera Aránguiz | 
|---|---|
| Country (sports) | Chile | 
| Residence | Santiago, Chile | 
| Born | 2 February 1989 San Felipe, Chile  | 
| Turned pro | 2007 | 
| Retired | 2017 | 
| Plays | Right-handed (two-handed backhand) | 
| Prize money | $70,170 | 
| Singles | |
| Career record | 0–1 (at ATP Tour level, Grand Slam level, and in Davis Cup) | 
| Career titles | 0 | 
| Highest ranking | No. 271 (29 August 2011) | 
| Doubles | |
| Highest ranking | No. 257 (25 July 2011) | 
| Last updated on: 10 March 2023. | |
| Medal record | ||
|---|---|---|
| Tennis | ||
| Representing Chile | ||
| Pan American Games | ||
| 2011 Guadalajara | Mixed Doubles | |
Guillermo Andrés Rivera Aránguiz (Latin American Spanish: [ɡiˈʝeɾmo anˈdɾes riˈβeɾa aˈɾaŋɡis]; born 2 February 1989) is a Chilean former professional tennis player. Rivera represented Chile in March 2011 against the United States, making his Davis Cup debut by playing the fifth rubber against John Isner, losing the match 3–6, 7–6, 5–7. It would be the only Davis Cup match of his career.