Gregory Allen Jackson (born August 20, 1966 in Hialeah, Florida) is a former American football safety in the National Football League. He was drafted by the New York Giants in the third round of the 1989 NFL Draft. He played college football at LSU. Jackson also played for the Philadelphia Eagles, New Orleans Saints, and San Diego Chargers. In 1994, he took over from Wes Hopkins as the starting free safety of the Philadelphia Eagles, and played there the following year, till replaced by rookie Brian Dawkins.