Francisco Javier Prieto Alvarez (born 5 July 1987) is a Mexican professional boxer who challenged for the WBC lightweight title in 2014 and held the WBC Silver lightweight title from 2013 to 2014.
Prieto made his professional debut as a boxer at the age of eighteen, defeating his opponent by way of technical knockout on March 16, 2006.
Prieto has twice fought to a draw against Ivan Cano.