Roberto Sanchez Ramírez (born August 17, 1972) is a Mexican former professional baseball pitcher.

Known as "Metralleta" (Machine gun in Spanish), he played two seasons in the majors, pitching in 21 games for the San Diego Padres in 1998 and 34 games for the Colorado Rockies in 1999.

On August 15, 1999, Ramirez picked up the only save of his career, holding down a 8-2 Rockies victory over the Montreal Expos.

Sánchez retired in April 2014 and last played for the Diablos Rojos del México.

This biographical article relating to a Mexican baseball pitcher is a stub.