There are no quarterbacks over 40 who are currently on a team. Brad Johnson, who is currently a free agent, is 40 years old which makes him the oldest quarterback in the league. Kurt Warner at age 37 is the oldest player currently on a team.
48 in history
5 last season
There are 3 quarterbacks
None. Brett Favre is the oldest active quarterback at this time.
http://en.wikipedia.org/wiki/List_of_current_National_Football_League_team_rosters Not limited to quarterbacks and not the most efficient thing around, but it'll get you there.
who are the 10 oldest quarterbacks in the nfl ?
Brett Favre, Joe montana, Terry Bradshaw, among others