| Jadson Viera | |
| Fullname: | Jadson Viera Castro Gonçalves |
| Birth Date: | 1981 8, df=yes |
| Birth Place: | Santana do Livramento, Brazil |
| Height: | 1.92 m |
| Currentclub: | Boston River (manager) |
| Position: | Centre back |
| Youthyears1: | 1996–2000 |
| Youthclubs1: | Cantareira |
| Years1: | 2001–2007 |
| Years2: | 2005 |
| Years3: | 2007–2010 |
| Years4: | 2010–2011 |
| Years5: | 2011 |
| Years6: | 2012 |
| Years7: | 2013–2016 |
| Years8: | 2016–2017 |
| Clubs2: | → Atlante (loan) |
| Clubs5: | → Nacional (loan) |
| Clubs6: | Nacional |
| Clubs8: | Rentistas |
| Caps1: | 141 |
| Caps2: | 14 |
| Caps3: | 65 |
| Caps4: | 2 |
| Caps5: | 5 |
| Caps6: | 17 |
| Caps7: | 31 |
| Caps8: | 13 |
| Goals1: | 7 |
| Goals2: | 1 |
| Goals3: | 1 |
| Goals4: | 0 |
| Goals5: | 0 |
| Goals6: | 0 |
| Goals7: | 0 |
| Goals8: | 0 |
| Manageryears1: | 2018 |
| Managerclubs1: | Nacional (assistant) |
| Manageryears2: | 2019–2021 |
| Managerclubs2: | Talleres (assistant) |
| Manageryears3: | 2022 |
| Managerclubs3: | Internacional (assistant) |
| Manageryears4: | 2022–2023 |
| Managerclubs4: | Vélez Sarsfield (assistant) |
| Manageryears5: | 2024– |
| Managerclubs5: | Boston River |
Jadson Viera Castro Gonçalves (born 4 August 1981), known as Jadson Viera or just Jadson, is a Brazilian football manager and former player who played as a central defender. He is the current manager of Uruguayan club Boston River.
Born in Brazil, Jadson also holds Uruguayan nationality.
Jadson was born in Santana do Livramento, Rio Grande do Sul, a city in the Uruguayan border, and started his professional career in 2001 with Danubio in Uruguay. With the club, he won two Apertura, three Clausura and two overall Uruguayan Primera División titles.
Jadson spent part of 2005 on loan to Atlante in Mexico before returning to Uruguay in 2006. After helping Danubio to claim the overall league championship in 2007, he moved to Argentina to join Lanús, where he helped the club to win the 2007 Apertura tournament, their first ever top flight league title.
In July 2010, Jadson signed with Vasco da Gama.[1] After featuring rarely, he returned to Uruguay on 3 February 2011, after being loaned to Nacional.[2]
Jadson subsequently signed a permanent deal with Nacional for the 2012 season, but returned to his first club Danubio in 2013. He retired in 2017, after a brief spell with Rentistas.
After retiring, Viera was appointed assistant coach at Nacional under manager Alexander Medina.[3] The duo left the club at the end of the year.
Viera followed Medina to Argentine club Talleres de Córdoba in June 2019,[4] and remained working as his assistant at Internacional and Vélez Sarsfield. On 18 December 2023, he was appointed manager of Boston River for the upcoming campaign.[5]
Danubio
Lanús
2007 Apertura
Nacional