The 1905 U.S. Open was the 11th U.S. Open, held September 21–22 at Myopia Hunt Club in South Hamilton, Massachusetts, northeast of Boston. Willie Anderson won his third consecutive U.S. Open title, and his record fourth overall, two strokes ahead of runner-up Alex Smith.

Smith was the co-leader with Stewart Gardner at 156 after the first 36 holes on Thursday. Following the third round on Friday morning, Smith led Anderson by a shot, but a third consecutive 80 in the afternoon dropped him to second place. Five strokes back after the second round, Anderson closed with 76 and 77 for 314, two strokes ahead of Smith. Scoring conditions at Myopia were very difficult; the lowest score posted was 75, by 1897 champion Joe Lloyd in the opening round. His next best was 83 in the third round.

Anderson's feat of three consecutive U.S. Open titles remains unmatched, while his four wins were later equaled by three others: Bobby Jones, Ben Hogan, and Jack Nicklaus. Anderson played in the next five editions with three top-five finishes and was eleventh in his last appearance in 1910; he died four months later at age 31.

Thursday, September 22, 1905 (morning)

Place	Player	Score
1	Joe Lloyd	75
2	Alex Smith	76
3	Stewart Gardner	78
T4	Peter Robertson	79
	Alec Ross
T6	Fred McLeod	80
	James Maiden
	Bernard Nicholls
	Harry Turpie
T10	Willie Anderson	81
	Percy Barrett
	Fred Mackenzie
	John Mackie
	Tom McNamara
	Bob Peebles
	Arthur Smith
	Walter Travis (a)
	George Turnbull
	Bert Way

Source:

Thursday, September 22, 1905 (afternoon)

Place	Player	Score
T1	Stewart Gardner	78-78=156
	Alex Smith	76-80=156
T3	Alex Campbell	82-76=158
	Gilbert Nicholls	82-76=158
	Arthur Smith	81-77=158
6	Peter Robertson	79-80=159
7	Tom McNamara	81-79=160
T8	Willie Anderson	81-80=161
	Percy Barrett	81-80=161
	Joe Lloyd	75-86=161
	Walter Travis (a)	81-80=161

Source:

Friday, September 22, 1905 (morning)

Place	Player	Score
1	Alex Smith	76-80-80=236
2	Willie Anderson	81-80-76=237
T3	Percy Barrett	81-80-77=238
	Alex Campbell	82-76-80=238
	Arthur Smith	81-77-80=238
6	Peter Robertson	79-80-81=240
T7	Stewart Gardner	78-78-85=241
	Walter Travis (a)	81-80-80=241
T9	George Cumming	85-82-75=242
	Gilbert Nicholls	82-76-84=242

Source:

Friday, September 22, 1905 (afternoon)

Place	Player	Score	Money ($)
1	Willie Anderson	81-80-76-77=314	200
2	Alex Smith	76-80-80-80=316	150
T3	Percy Barrett	81-80-77-79=317	113
	Peter Robertson	79-80-81-77=317
5	Stewart Gardner	78-78-85-77=318	80
6	Alex Campbell	82-76-80-81=319	70
T7	Jack Hobens	82-80-81-78=321	45
	Gilbert Nicholls	82-76-84-79=321
9	George Cumming	85-82-75-81=323	30
10	Arthur Smith	81-77-80-86=324	25

Source:

Amateurs: Lockwood (325), Travis (325).

• USGA Championship Database

42°36′32″N 70°51′32″W / 42.609°N 70.859°W / 42.609; -70.859