Emilio Jose Bonifacio Del Rosario (born April 23, 1985) is a Dominican professional baseball utility player with the Florida Marlins of Major League Baseball in the United States. He played his first Major League game September 1, 2007, when he was called up by the Arizona Diamondbacks. He is from Santo Domingo, Dominican Republic.
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 (he played for the South Bend Silver Hawks before he entered the majors. 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.