Taylor McDowell "Dunc" Duncan (May 12, 1953 – January 3, 2004) was an American baseball infielder.

Duncan, who was a college teammate of Leon Lee in Sacramento, was selected by the Atlanta Braves as the 10th overall pick of the 1971 Major League Baseball Draft.

He was traded along with Earl Williams by the Braves to the Baltimore Orioles for Davey Johnson, Pat Dobson, Johnny Oates and Roric Harrison on the last day of the Winter Meetings on December 1, 1972.

[1] Duncan spent five seasons playing for Orioles-affiliated minor league clubs.

In September 1977 he was claimed off waivers by the St. Louis Cardinals and made his major league debut, playing a handful of the remaining games.