The 1955 Open Championship was the 84th Open Championship, played 6–8 July at the Old Course at St Andrews in St Andrews, Scotland. Peter Thomson won the second of three consecutive Open titles, two strokes ahead of runner-up John Fallon. Thomson won a total of five Claret Jugs, the last in 1965. The prize for the winner was increased from £750 to £1,000, the other prizes remaining unchanged. The total prize money was therefore increased from £3,500 to £3,750. Previously the 17th hole (the "Road Hole") was a par 5; for this Open it became a par 4, which reduced the course par from 73 to 72.