Graeme McDowell (born 30 July 1979) is a professional golfer from Northern Ireland who plays on the European Tour.

McDowell was born in Portrush, Northern Ireland. Like an increasing number of promising junior Irish and UK golfers McDowell took a golf scholarship at an American university. He attended the University of Alabama at Birmingham from 1998 to 2002. In 2002, he won the Haskins Award for most outstanding collegiate golfer in the United States. In 2001 he was a member of the Great Britain and Ireland team which retained the Walker Cup at Sea Island in Georgia.

McDowell turned professional in 2002 and won that season's Volvo Scandinavian Masters, which was only his fourth start on the European Tour. He didn't win in his second season, but in 2004 he claimed the Telecom Italia Open and finished sixth on the European Tour Order of Merit. In 2005 he divided his time between the European and PGA Tours. He was not yet a full member of the PGA Tour but his top 50 placing in the Official World Golf Rankings ensured he received invitations to play in many events in the U.S. and McDowell managed two top ten finishes on the PGA Tour including tied second place at the Bay Hill Invitational which earned him enough money to become fully exempt on the PGA Tour in 2006.