The 1910 Open Championship was the 50th Open Championship, held 21–24 June at the Old Course at St Andrews, Fife, Scotland. James Braid won the Championship for the 5th time, by four strokes from Sandy Herd.
There was no qualifying competition. All 210 entries would play 18 holes in pairs on the first two days with the top 60 and ties playing 36 holes on the third day. Prize money was increased by £10 with the addition of £5 prizes for 7th and 8th places.
Play started on Tuesday 21 June but a thunderstorm at about 2 pm meant that play had to be cancelled with many of the greens flooded. It was decided that all existing scores would not count and that the Championship would start again on the Wednesday and be extended to Friday.
After the first round, George Duncan lead with a 73, a stroke ahead of Willie Watt and Robert Thomson who scored 74. The situation changed significantly after the second round with Duncan taking 77, while Watt and Thomson took 82 and 85. The leader was Willie Smith, then a professional in Mexico City, who was on 148 after a second round 71. Second was Braid on 149 with Duncan third on 150. 64 players scored 161 or better and qualified for the final day.
Duncan's 71 on the last morning gave him a two-stroke lead over Braid with Herd and Ted Ray a further four shots behind. Duncan's final round of 83 dropped him to third place and gave Braid a comfortable victory with Herd second. Smith's second 80 of the day left him in a disappointing tie for fifth place.