Boris Santiago Fiallos Tirado (born 16 March 1974) is an Ecuadorian football manager and former player who played as a defender.
[2] Fiallos' spell in charge of Macará lasted one match (a 3–1 loss to LDU Quito) before the appointment of Víctor Riggio as manager.
[3] He later became a youth coach at cross-town rivals Técnico Universitario, being also an interim manager of the main squad in June 2012.
[4][5] On 7 September 2015, Fiallos was named manager of Técnico Universitario until the end of the year, after the sacking of Óscar del Solar.
Fiallos continued to work as an assistant of Macará in the following years, and was named manager of the club on 10 April 2023, replacing Marcelo Robledo.