Grady O'Neal Jackson (born January 21, 1973) is an American former professional football defensive tackle.
Jackson also played for the New Orleans Saints, Green Bay Packers, Jacksonville Jaguars, Atlanta Falcons, Detroit Lions and Florida Tuskers.
Before the 2005 NFL season, Jackson said he would hold-out of training camp in order to secure a new contract with the Packers.
Several days later, however, Jackson told reporters that he no longer felt wanted in the Packers organization and requested to be released or traded to another team, but later retracted those statements, and played out the 2005 season without a new contract.
On December 2, 2008, the NFL reported that he had failed a drug test and they would further investigate the circumstances before deciding upon disciplinary action.