Mauricio Arnoldo Quintanilla Flores (born October 31, 1981, in Ilopango, El Salvador) is a Salvadoran professional footballer.
After left Nejapa FC, Quintanilla signed again with Luis Ángel Firpo.
He played with the team of Usulután at the 2008–09 CONCACAF Champions League Group Stage.
[2] Quintanilla made his debut for El Salvador in a March 2001 friendly match against Guatemala and has earned a total of 5 caps, scoring no goals.
All of these games were friendlies, though he was a non-playing squad member at the 2003 CONCACAF Gold Cup.