Jeffrey Gallagher (born December 29, 1964) is an American professional golfer who played on the PGA Tour and the Nationwide Tour. He is the younger brother of five-time PGA Tour winner Jim Gallagher, Jr. and LPGA Tour golfer Jackie Gallagher-Smith.
Gallagher has won twice on the Nationwide Tour, once in 1991 at the Ben Hogan Cleveland Open and another in 2000 at the BUY.COM South Carolina Classic. He nearly won again at the 2009 Rex Hospital Open when he lost in a one-hole playoff to Kevin Johnson after Johnson birdied the first playoff hole, while Gallagher parred it.