Brandon Durell Allen (born February 12, 1986 in Conroe, Texas) is a Major League Baseball first baseman and left fielder for the Oakland Athletics.
Allen was drafted by the Chicago White Sox in the fifth round of the 2004 Major League Baseball Draft. On July 7, 2009, he was traded from the White Sox to the Arizona Diamondbacks for pitcher Tony Peña.
Allen was called up to the majors for the first time on August 22, 2009 and made his debut that day. He finished the game one for four with a single. Allen would play in 32 games that season and finished with a .202 batting average, four home runs, and 14 RBIs.