Paul William "Bill" Troup III (April 2, 1951 – December 14, 2013) was a professional American football player.

An undrafted quarterback from the University of South Carolina, Troup played in seven NFL seasons from 1974 to 1980 for 2 different teams.

He saw his most extensive action for the Colts in 1978, when Bert Jones was injured and Mike Kirkland ineffective.

[1] After being released by Baltimore, Troup went north to the Canadian Football League's Winnipeg Blue Bombers, where he served as the backup to starter Dieter Brock for the 1979 season.

This biographical article relating to an American football quarterback born in the 1950s is a stub.