Emilio Jose Bonifacio Del Rosario (born April 23, 1985 in Santo Domingo, Dominican Republic) is a Major League Baseball third baseman who currently plays for the Florida Marlins. He played his first Major League game September 1, 2007, when he was called up by the Arizona Diamondbacks.

On July 22, 2008, he was traded from the Diamondbacks to the Washington Nationals for pitcher Jon Rauch and was optioned to Triple-A Columbus.

Bonifacio was called up to the majors by the Nationals on August 1, along with fellow middle infielder Alberto Gonzalez. Bonifacio went 1 for 4, with an RBI, run, and a stolen base.