Jason Jefferson (born December 20, 1981 in Chicago, Illinois) is an American football defensive tackle who is currently a free agent. He was drafted by the New Orleans Saints in the sixth round of the 2005 NFL Draft. He played college football at Wisconsin.
Jefferson has also been a member of the Chicago Bears, Philadelphia Eagles, Buffalo Bills and Atlanta Falcons.
Jason Jefferson is a graduate of Leo Catholic High School, located on the South Side of Chicago.