| Óscar Álvarez | |
| Fullname: | Óscar Álvarez Sanjuán |
| Birth Date: | 9 June 1977 |
| Birth Place: | Barcelona, Spain |
| Position: | Centre-back |
| Currentclub: | Girona B (assistant) |
| Youthclubs1: | Barcelona |
| Years1: | 1994–1997 |
| Caps1: | 32 |
| Goals1: | 2 |
| Years2: | 1995–1999 |
| Caps2: | 74 |
| Goals2: | 2 |
| Years3: | 1999–2002 |
| Caps3: | 35 |
| Goals3: | 1 |
| Years4: | 2000–2001 |
| Clubs4: | → Lleida (loan) |
| Caps4: | 24 |
| Goals4: | 2 |
| Years5: | 2002–2005 |
| Caps5: | 31 |
| Goals5: | 1 |
| Years6: | 2005–2007 |
| Caps6: | 4 |
| Goals6: | 0 |
| Years7: | 2007–2008 |
| Caps7: | 53 |
| Goals7: | 1 |
| Years8: | 2008–2010 |
| Caps8: | 9 |
| Goals8: | 1 |
| Years9: | 2010–2011 |
| Caps9: | 8 |
| Goals9: | 0 |
| Years10: | 2011–2014 |
| Caps10: | 75 |
| Goals10: | 2 |
| Totalcaps: | 345 |
| Totalgoals: | 12 |
| Manageryears1: | 2015–2017 |
| Managerclubs1: | Llagostera (assistant) |
| Manageryears2: | 2017–2018 |
| Managerclubs2: | Llagostera |
| Manageryears3: | 2018–2019 |
| Managerclubs3: | Llagostera (assistant) |
| Manageryears4: | 2019–2020 |
| Managerclubs4: | Valencia (assistant) |
| Manageryears5: | 2020–2023 |
| Managerclubs5: | Badalona Futur (assistant) |
| Manageryears6: | 2024– |
| Managerclubs6: | Girona B (assistant) |
Óscar Álvarez Sanjuán (born 9 June 1977) is a Spanish retired footballer who played as a central defender, currently assistant manager of Girona FC B.
Born in Barcelona, Catalonia, Álvarez finished his youth career with local FC Barcelona, going on to feature for its C and B teams until the age of 22. He later signed with Real Oviedo, making his La Liga debut on 16 October 1999 by coming in as a late substitute in a 2–2 away draw against Real Madrid.[1]
After playing for UE Lleida and CD Tenerife in the Segunda División, Álvarez joined Gimnàstic de Tarragona of the same league in July 2005.[2] In his first and only season he contributed only 524 minutes in all competitions, but achieved promotion in the league.
Deemed surplus to requirements by Nàstic in the summer of 2006,[3] and subsequently being left out of the first-team squad, Álvarez signed with Orihuela CF from Segunda División B in mid-January 2007.[4] He returned to the second level nearly two years later with Girona FC[5] but, after two seasons marked by injury,[6] he moved back to division three with CE L'Hospitalet.[7]
Álvarez signed for UE Llagostera also in his native region midway through the 2010–11 season,[8] winning promotion from the Tercera División and going on to play several years with the club in the third tier.[9]
Álvarez began working as a manager with his last team, as assistant to Oriol Alsina.[10] He was promoted to head coach for the 2017–18 campaign, which ended in relegation from division three.[11]
In September 2019, Álvarez accepted an offer from former Barcelona teammate Albert Celades to be part of his staff.[12] Eleven months later, he returned to Llagostera still under Alsina.[10]
Álvarez's older brother, Quique, was also a footballer and a stopper, who represented mainly Villarreal CF. Their father Quique Costas occupied the same position, and played professionally for RC Celta de Vigo, Barcelona and the Spanish national team.[13]