The 1979 Open Championship was the 108th Open Championship, held 18–21 July at Royal Lytham & St Annes Golf Club in Lancashire, England. Seve Ballesteros, 22, won the first of his five major titles, three strokes ahead of runners-up Jack Nicklaus and Ben Crenshaw. It was the first of his three Open Championship victories; he raised the Claret Jug again in 1984 and 1988.

The Open Championship, often referred to as The Open or the British Open, is the oldest golf tournament in the world, and one of the most prestigious. Founded in 1860, it was originally held annually at Prestwick Golf Club in Scotland. Later the venue rotated between a select group of coastal links golf courses in the United Kingdom. It is organised by The R&A.