Bradley George Boxberger (born May 27, 1988) is an American professional baseball relief pitcher for the Tampa Bay Rays of Major League Baseball (MLB). He previously played in MLB for the San Diego Padres from 2012 through 2013.

Boxberger attended the University of Southern California (USC), where he played college baseball for the USC Trojans. Drafted in the first round of the 2009 MLB draft by the Cincinnati Reds, Boxberger played in minor league baseball for the Reds until was traded to the Padres after the 2011 season. Boxberger made his MLB debut with the Padres in 2012. The Padres traded him to Tampa Bay after the 2013 season.

Boxberger attended Foothill High School in Santa Ana, California. He was drafted by the Kansas City Royals in the 20th round of the 2006 Major League Baseball draft, but did not sign, choosing to attend the University of Southern California (USC). For the USC Trojans baseball team, he was named a Second Team All-American by Rivals.com. Boxberger was a part of the USC rotation his freshman and junior year, and split his sophomore season between starting and relief.

Boxberger was drafted by the Cincinnati Reds in the first round (43rd overall) of the 2009 Major League Baseball draft, and signed. Boxberger made his professional debut with the Lynchburg Hillcats of the Class A-Advanced Carolina League in 2010. He was named to the Carolina League All-Star Team. He was then promoted to the Carolina Mudcats of the Class AA Southern League. He had a combined win–loss record of 5–10 with a 4.91 earned run average (ERA) in 36 games, including 13 starts, as he was converted from a starter to a reliever after the promotion.