Reginald Alfred Bush Jr. (born March 2, 1985) is a former American NFL football running back who now serves as an on-air college football analyst for Fox Sports.

He played college football at USC, where he earned consensus All-American honors twice and won the Heisman Trophy as the most outstanding player in the nation. Bush is widely regarded as one of the greatest college football players of all-time. His Heisman Trophy was later vacated due to violations of NCAA rules. He was drafted by the New Orleans Saints second overall in the 2006 NFL Draft. While with the Saints, Bush was named an All-Pro punt returner in 2008 and won Super Bowl XLIV in 2010 over the Indianapolis Colts. He also played for the Buffalo Bills, Miami Dolphins, Detroit Lions, and San Francisco 49ers.