To my knowledge there have been 4. Doug Williams of the Washington Redskins who was the first and to date the only black quarterback to start and win a Superbowl, Kordell Stewart played (for one play as a wide receiver/backup QB) but did not start for the Pittsburgh Steelers in Superbowl XXX. He had 3 yard 4th down run which netted a first down. Steve Mcnair with the Tenessee Titans, Donovan Mcnabb of the Philadelphia Eagles, and Colin Kaepernick of the San Fransisco 49'ers all started and lost the Super Bowl. Russell Wilson of the Seattle Seahawks won Super Bowl 48 and lost Super Bowl 49.
SIDE NOTE: The first Black NFL QB to get a ring was Joe Gilliam (R.I.P.) of the Pittsburgh Steelers. (2x but he never played in the Super Bowl as a back up to Terry Bradshaw!)
2, Doug Williams and Warren Moon
Doug Williams Steve McNair Donovan McNabb
Only one starting black quarterback has won a super bowl - Doug Williams
alot of people
Doug Williams and Dennis Dixon.
1, Doug Williams, Washington Redskins Super Bowl 22
Two black quarterbacks have won Super Bowl Rings as starters, Doug Williams and Russell Wilson.
The Steelers had three different quarterbacks that started in the Super Bowl. Terry Bradshaw played in four Super Bowls (IX, X, XIII & XIV). Ben Roethlisberger played in three (XL, XLIII & XLV) and Neil O'Donnell played in Super Bowl XXX.