Lorenzo Trejo is a Mexican boxer.
In 2003, he lost to Iván Calderón for the World Boxing Organization minimumweight world title.
In 2006, Trejo lost to Eagle Kyowa for the World Boxing Council minimumweight world title.
In 2007, Trejo lost to Édgar Sosa for the World Boxing Council light flyweight world title.
Trejo lost to Antonio Nieves in 2015.