Sam Branson Rayburn (born October 20, 1980) is a former American football defensive tackle.
Sam Rayburn was a member of the Chickasha High School football team, which was the 1997 and 1998 Oklahoma State runner-up.
Chickasha lost both times to Oklahoma City Carl Albert High school.
Rayburn joined the Philadelphia Eagles as an undrafted free agent from the University of Tulsa prior to the 2003 season.
On June 5, 2007, the San Francisco 49ers announced that they would sign Rayburn to a free agent contract.