| Gustavo Guerreño | |
| Fullname: | Gustavo Ariel Guerreño Otazú |
| Birth Date: | 1991 10, df=y |
| Birth Place: | Paraguarí, Paraguay |
| Height: | 1.80 m[1] |
| Currentclub: | San Marcos (on loan from Deportes Concepción) |
| Position: | Forward |
| Youthclubs1: | 15 de Mayo |
| Youthclubs2: | Rubio Ñu |
| Years1: | 2010–2012 |
| Caps1: | 4 |
| Goals1: | 0 |
| Clubs1: | Rubio Ñu |
| Years2: | 2012 |
| Caps2: | 3 |
| Goals2: | 0 |
| Clubs2: | Sportivo Carapeguá |
| Years3: | 2013 |
| Caps3: | 19 |
| Goals3: | 3 |
| Clubs3: | Sportivo Iteño |
| Years4: | 2013 |
| Caps4: | 18 |
| Goals4: | 4 |
| Clubs4: | Olimpia Itá |
| Years5: | 2014 |
| Caps5: | 12 |
| Goals5: | 1 |
| Clubs5: | Sportivo Carapeguá |
| Years6: | 2014 |
| Caps6: | 15 |
| Goals6: | 5 |
| Clubs6: | Sportivo Iteño |
| Years7: | 2015–2016 |
| Caps7: | 44 |
| Goals7: | 16 |
| Clubs7: | Pasaquina |
| Years8: | 2017–2018 |
| Caps8: | 72 |
| Goals8: | 27 |
| Clubs8: | Alianza |
| Years9: | 2018 |
| Caps9: | 3 |
| Goals9: | 1 |
| Clubs9: | Santa Tecla |
| Years10: | 2018–2021 |
| Caps10: | 72 |
| Goals10: | 15 |
| Clubs10: | Deportes Melipilla |
| Years11: | 2021 |
| Caps11: | 14 |
| Goals11: | 5 |
| Clubs11: | Cobreloa |
| Years12: | 2022 |
| Caps12: | 31 |
| Goals12: | 7 |
| Clubs12: | Universidad de Concepción |
| Years13: | 2023 |
| Caps13: | 3 |
| Goals13: | 0 |
| Clubs13: | Mushuc Runa |
| Years14: | 2023– |
| Caps14: | 16 |
| Goals14: | 3 |
| Clubs14: | Deportes Concepción |
| Years15: | 2024– |
| Caps15: | 0 |
| Goals15: | 0 |
| Clubs15: | → San Marcos (loan) |
| Club-Update: | 11 May 2024 |
Gustavo Ariel Guerreño Otazú (born 17 October 1991) is a Paraguayan footballer who plays as a forward for Chilean club San Marcos de Arica on loan from Deportes Concepción.
Born in Paraguarí, Paraguay, Guerreño was with club 15 de Mayo in his hometwon before joining the Rubio Ñu under-20 team. He made his professional debut with them in the 2010 Paraguayan Primera División against Guaraní under Francisco Arce. In 2012, he switched to Sportivo Carapeguá in the same division.[2]
The next two years, Guerreño played for Sportivo Iteño, Olimpia Itá, Sportivo Carapeguá and Sportivo Iteño again.[2] [3]
In 2015, he emigrated to El Salvador and played for Pasaquina, Alianza and Santa Tecla. As a member of Alianza, he won two league titles in 2017 Apertura and 2018 Clausura.[4] [5] [2]
In the second half of 2018, Guerreño moved to Chile and signed with Deportes Melipilla, getting promotion to the Chilean Primera División in the 2020 season.[6] In August 2021, he switched to Cobreloa.[7]
In 2022, he played for Universidad de Concepción.[8]
In 2023, he moved to Ecuador and signed with Serie A side Mushuc Runa. In the second half of the same year, he returned to Chile and joined Deportes Concepción.[9] [10] In May 2024, he moved on loan to San Marcos de Arica to replace Nicolás Gauna due to an Achilles tendon rupture.[11]
His younger brother,, is a professional footballer. Another brother, Rubén, also played football and became a policeman like his father. They all three coincided in Sportivo Carapeguá.[2]