The 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 (and since lowered to 268 in 2011). 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.

This was the fourth major held at Olympia Fields; it hosted the U.S. Open in 1928 and the PGA Championship in 1925 and 1961.

North Course

Source:

Ernie Els (4,9,10,11,12,13,16), Retief Goosen (9,10,16), Lee Janzen, Corey Pavin, Tiger Woods (3,4,5,8,9,11,12,16)

Ricky Barnes (a), Hunter Mahan (a)

José María Olazábal (9,10), Vijay Singh (5,9,11,12,16), Mike Weir (11,12,16)

David Duval, Paul Lawrie (10,16), Mark O'Meara