The 1965 PGA Championship was the 47th PGA Championship, played August 12–15 at Laurel Valley Golf Club in Ligonier, Pennsylvania, a suburb southeast of Pittsburgh. Dave Marr won his only major championship, two strokes ahead of runners-up Billy Casper and Jack Nicklaus. Marr was the co-leader after 54 holes with Tommy Aaron, a stroke ahead of Gardner Dickinson and two shots ahead of major champions Nicklaus and Casper. Aaron shot 78 and Dickinson 74 on Sunday, while Marr matched an even-par 71 with Nicklaus and Casper.