Blas Miguel Riveros Galeano (born 3 February 1998) is a Paraguayan professional footballer who plays as a left-back for Argentine Primera División club Talleres and the Paraguay national team.

Riveros started his professional career with Olimpia Asunción in the Primera División Paraguaya after coming through their youth system.

In the 2016–17 UEFA Youth League group stage Riveros played in each of the six matches as the Basel U-19 team qualified for the knock-out round.

[6] Riveros scored his first goal for his club in the home game during the 2017–18 UEFA Champions League group stage on 27 September 2017 in the St. Jakob-Park.

[7] He scored his first domestic league goal for his team on 11 April 2018 in the home game as Basel won 3–0 against Zürich.

[11] He made his debut for the club on 5 November in a Danish Cup match against Ledøje-Smørum Fodbold, immediately contributing with an assist to the decisive goal by Simon Hedlund in a 1–0 win.

[12][13] In his Danish Superliga debut on 8 November, he scored the opening goal in a 3–1 home win over OB, but suffered a knee injury in the second-half after a collision with Ryan Laursen.

[17][18] On 28 May 2016, Riveros made his debut for the Paraguay national team against Mexico and he played the full game.