Melvin Mora Diaz (born February 2, 1972) is a Venezuelan former professional baseball infielder in Major League Baseball.
He played for the New York Mets, Baltimore Orioles, Colorado Rockies and Arizona Diamondbacks.
From his debut in 1999 to 2003, Melvin Mora was known as a utility player, playing all three outfield positions, shortstop, and second base.
In 2004, the Orioles made Mora their everyday third baseman, a position he occupied through 2009.