WThe 2003 Masters Tournament was the 67th Masters Tournament, held April 11–13 at Augusta National Golf Club in Augusta, Georgia. Mike Weir won his only major title in a one-hole playoff over Len Mattiace. He was the first Canadian to win a major, and also the first left-handed player to win the Masters. He is also the only Canadian to win the tournament.
WThe 2003 NCAA Division I Women's Golf Championships were contested at the 22nd annual NCAA-sanctioned golf tournament to determine the individual and team national champions of women's Division I collegiate golf in the United States.
WThe 2003 Open Championship was a men's major golf championship and the 132nd Open Championship, held from 17–20 July at Royal St George's Golf Club in Sandwich, England. Ben Curtis won his only major title, one stroke ahead of runners-up Thomas Bjørn and Vijay Singh. Bjørn had led in the final round by two shots with three holes to play, but needed three attempts to play out of a greenside bunker on the 16th hole. Playing in his first major championship and number 396 in the world rankings, Curtis became the first debut winner at The Open since Tom Watson in 1975.
WThe 2003 PGA Championship was the 85th PGA Championship, held from August 14–17 at the East Course of Oak Hill Country Club near Rochester, New York. Shaun Micheel won his only major title, two strokes ahead of runner-up Chad Campbell. It was also the sole career win for Micheel on the PGA Tour, who was making his 164th PGA Tour start and was ranked 169th in the world at the start of the week.
WThe 2003 Players Championship was a golf tournament in Florida on the PGA Tour, held March 27–30 at TPC Sawgrass in Ponte Vedra Beach, southeast of Jacksonville. It was the 30th Players Championship.
WThe 5th Presidents Cup was held 20–23 November 2003 at the Links Course at Fancourt Hotel and Country Club in George, Western Cape, South Africa. The United States and International team tied the competition 17–17, and after three tied playoff holes between Tiger Woods and Ernie Els, it was decided that the Cup would be shared by agreement of the captains and players. The honorary chairman was South African President Thabo Mbeki. The event was originally scheduled to be held in autumn 2002 before the 2001 Ryder Cup was postponed to 2002 due to the September 11 attacks.
WThe 2003 Senior British Open was a senior major golf championship and the 17th Senior British Open, held from 24–27 July at Turnberry in South Ayrshire, Scotland. It was the 5th Senior British Open played at the course and the first Senior British Open played as a senior major championship.
WThe 2003 United States Open Championship was the 103rd U.S. Open, held June 12–15 at the North Course of Olympia Fields Country Club in Olympia Fields, Illinois, a suburb south of Chicago. Jim Furyk won his only major championship, three shots ahead of runner-up Stephen Leaney. With a total score of 272, Furyk tied the record for the lowest 72-hole score in U.S. Open history, also achieved in 2000, 1993 and 1980. Another record was equalled by Vijay Singh, who tied Neal Lancaster's 9-hole record of 29 on the back nine of his second round.
WThe 2003 Volvo PGA Championship was the 49th edition of the Volvo PGA Championship, an annual professional golf tournament on the European Tour. It was held 22–25 May at the West Course of Wentworth Club in Virginia Water, Surrey, England, a suburb southwest of London.
WThe 2003 WGC-World Cup took place November 13–16 at the Kiawah Island Golf Resort, Ocean Course in Kiawah Island, South Carolina, U.S. It was the 49th World Cup and the fourth as a World Golf Championship event. 24 countries competed and each country sent two players. The prize money totaled $4,000,000 with $1,400,000 going to the winning pair. The South African team of Rory Sabbatini and Trevor Immelman won. They won by four strokes stroke over the English team of Paul Casey and Justin Rose.