21. Ken Norton Jr.
Norton Jr joined the 49ers in 1994 as a Super Bowl winner with the Dallas Cowboys, by helping his new team to two successive Super Bowl wins, he became the first player to win three in a row.
During his six years with the franchise he made two Pro Bowl appearances.
20. Joe Staley
Staley is one player in our list who still plays for the 49ers, after being first pick in the 2007 Draft.
With five Pro Bowl appearances already, it is likely the Offensive Tackle will move up this list in the near future.