One
Ben Roethlisberger was the Steelers starting quarterback in Super Bowl XL.
Neil O'Donnell was the Steelers starting quarterback in Super Bowl XXX.
The Only starting black quarterback the win the superbowl. Dennis Dixon, for example, won it on the bench.
Chris Chandler was Atlanta's starting quarterback in Super Bowl XXXIII.
Chris Chandler
Ben Roethlisberger was the starting quarterback for the Steelers for both of their Super Bowl seasons, 2005 and 2008.
Bob Griese was the starting QB for Miami in Super Bowl VIII.
Brad Johnson
Joe Namath
doug Williams
As of the 2008 season, that was Donovan McNabb of the Philadelphia Eagles in Super Bowl XXXIX.
Through Super Bowl XLIII, the last Redskins Super Bowl victory was in Super Bowl XXVI and the starting QB was Mark Rypien.