Gustavo Agustín Viera Velázquez (born 28 August 1995) is a Paraguayan professional footballer who plays as a midfielder for Independiente F.B.C.
Viera played in his youth career for Libertad, before moving to Rubio Ñu.
He made his professional debut for the club in 2012 and remained there until 2014.
[1] Despite already being a professional player, Viera was relocated to Corinthians' youth team.
The central midfielder scored the winning goal at the U20 Campeonato Brasileiro final against Atlético Paranaense and was chosen as the best player of the tournament.