The 2005 United States Open Championship was the 105th U.S. Open, held June 16–19 at Pinehurst Resort Course No. 2 in Pinehurst, North Carolina.
  
Michael Campbell won his only major title, two strokes ahead of runner-up Tiger Woods; third-round leader and two-time U.S. Open champion Retief Goosen collapsed on the  It was the second of three U.S. Opens at the course, which first hosted in 1999, when Payne Stewart won his second U.S. Open four months before his death in an aviation accident.  Six years was the shortest gap between U.S. Opens at the same site since 1946.  The total purse was  with a winner's share of $1.17 million.

History of U.S. Open at Pinehurst No. 2 
It was only the second U.S. Open at Pinehurst, because of past concerns of high temperatures and its distance from a major populated area.  At the first in 1999, Payne Stewart won his second U.S. Open (and third major) in one of the most remarkable U.S. Open victories ever.  He trailed playing partner Phil Mickelson by one stroke as they played the 16th hole, where he made an amazing  putt for par while Mickelson missed his from. Stewart birdied 17 to take the lead and holed a  par putt on 18 in one of the most dramatic finishes ever. After helping the U.S. regain the Ryder Cup in late September, he died in a plane crash a month later at age 42. Stewart was honored at the 2005 edition with a silhouette of his 1999 victory pose on the flag of the 18th green, also captured in a bronze statue overlooking the 18th green.

Following a restoration by Bill Coore and Ben Crenshaw, the U.S. Open returned for a third time in 2014, and will return for a fourth time in 2024.

Course layout
Course No. 2

Field
1. Last 10 U.S. Open Champions
Ernie Els (4,8,9,10,12,16), Jim Furyk (16), Retief Goosen (8,9,10,12,13,16), Lee Janzen, Steve Jones, Corey Pavin, Tiger Woods (3,4,5,9,11,12,16)

2. Top two finishers in the 2004 U.S. Amateur
Luke List (a), Ryan Moore (a)

3. Last five Masters Champions
Phil Mickelson (8,9,11,12,16), Mike Weir (8,9,16)

4. Last five British Open Champions
Ben Curtis, David Duval, Todd Hamilton (9,16)

5. Last five PGA Champions
Rich Beem, Shaun Micheel, Vijay Singh (9,11,12,16), David Toms (9,11,12,16)

6. The Players Champion
Fred Funk (8,9,11,12,16)

7. The U.S. Senior Open Champion
Peter Jacobsen

8. Top 15 finishers and ties in the 2004 U.S. Open
Robert Allenby, Stephen Ames (9,16), Tim Clark (16), Chris DiMarco (9,11,16), Steve Flesch (9), Jay Haas (9,16), Tim Herron (16), Spencer Levin, Jeff Maggert, Shigeki Maruyama (9,16)

9. Top 30 leaders on the 2004 PGA Tour official money list
Stuart Appleby (16), Chad Campbell (16), K. J. Choi (16), Stewart Cink (16), Darren Clarke (10,16), John Daly (16), Carlos Franco, Sergio García (10,12,16), Mark Hensby (16), Zach Johnson (16), Jerry Kelly (16), Davis Love III (16), Kenny Perry (11,12,16), Rory Sabbatini (16), Adam Scott (11,16), Scott Verplank (16)

10. Top 15 on the 2004 European Tour Order of Merit
Ángel Cabrera (13,16), Paul Casey, Stephen Gallacher, Pádraig Harrington (16), David Howell (16), Miguel Ángel Jiménez (16), Thomas Levet, Graeme McDowell (16), Nick O'Hern (16), Ian Poulter (16), Lee Westwood (16)

11. Top 10 on the PGA Tour official money list, as of May 30
Luke Donald (16), Justin Leonard (12,16)

12. Winners of multiple PGA Tour events from April 28, 2004 through the 2005 Memorial Tournament
Bart Bryant

13. Top 2 from the 2005 European Tour Order of Merit, as of May 30

14. Top 2 on the 2004 Japan Golf Tour, provided they are within the top 75 point leaders of the Official World Golf Rankings at that time
Shingo Katayama, Toru Taniguchi

15. Top 2 on the 2004 PGA Tour of Australasia, provided they are within the top 75 point leaders of the Official World Golf Rankings at that time
Richard Green

16. Top 50 on the Official World Golf Rankings list, as of May 30
Thomas Bjørn, Fred Couples, Charles Howell III, Tom Lehman, Peter Lonard, Paul McGinley, Colin Montgomerie, Rod Pampling, Craig Parry

17. Special exemptions selected by the USGA
Nick Price

Sectional qualifiers
Japan: Steven Conran, Keiichiro Fukabori, Yang Yong-eun
England: Michael Campbell, Nick Dougherty, Simon Dyson, Peter Hanson, Peter Hedblom, Robert Karlsson, Søren Kjeldsen, José-Filipe Lima, Jonathan Lomas
United States
Tarzana, California: Scott Gibson (L), Nick Jones (L), Eric Meichtry (L), Michael Ruiz (L)
Littleton, Colorado: Wil Collins (L)
Tampa, Florida: Nick Gilliam (L), Josh McCumber (L), Lee Rinker (L)
Atlanta, Georgia: Aaron Barber (L), Derek Brown (L), Jason Gore (L), Matt Kuchar, Scott Parel (L), Casey Wittenberg
Lahaina, Hawaii: Pierre-Henri Soero (a,L)
Glen Ellyn, Illinois: Jim Benepe (L), Jerry Smith
Chevy Chase, Maryland: Paul Claxton (L)
Rockville, Maryland: Tommy Armour III, Craig Barlow, D. J. Brigman (L), Olin Browne, David Denham (a,L), James Driscoll, Steve Elkington, Matt Every (a,L), J. P. Hayes, David Hearn, Ryuji Imada, Clint Jensen (L), Franklin Langham, Ian Leggatt, John Mallinger (L), Rocco Mediate, David Oh (L), Michael Putnam (a,L), Rob Rashell, Brandt Snedeker (L), Omar Uresti (L), Lee Williams (a,L)
Kansas City, Missouri: Tom Pernice Jr.
Summit, New Jersey: Stephen Allan, Michael Allen, J. J. Henry, J. L. Lewis, Len Mattiace, Chris Nallen
Columbus, Ohio: Eric Axley, John Cook, Bob Estes, Robert Gamez, Bill Glasson, Brandt Jobe, Bernhard Langer, Frank Lickliter, Steve Lowery, Scott McCarron, John Merrick (L), Arron Oberholser, Joe Ogilvie, Geoff Ogilvy, Carl Pettersson, Ted Purdy, John Rollins, Sal Spallone (L), Bob Tway, Euan Walters
Galena, Ohio: Patrick Damron (L)
McKinney, Texas: Trip Kuehne (a), Kyle Willmann (L)
Snoqualmie, Washington: Troy Kelly (L)

Round summaries

First round 
Thursday, June 16, 2005

Qualifiers Olin Browne and Rocco Mediate had the first round lead at Pinehurst No. 2. While Masters champion Tiger Woods battled to an even-par 70 and two time winner Ernie Els ground out a 71. Retief Goosen launched his title defense with a three-birdie 68 for a three-way tie for third, 2004 Masters winner Phil Mickelson returned a 69 after holing a 20-foot birdie putt at the last and world number two Vijay Singh opened with a 70.

Second round 
Friday, June 17, 2005

Two-time champion Retief Goosen shared the lead in the U.S. Open second round after most of the field struggled on  Trailing by one at the start of the day, he carded an even-par 70 for 138, level with overnight leader Olin Browne and unheralded Jason Gore. Gore, who missed the cut in his only previous U.S. Open appearance in 1998, vaulted up the leaderboard late in the day with a five-birdie 67.  South Korea's K. J. Choi (70) and Australian Mark Hensby (68) were tied for fourth at one under.  World number