Peter John Plummer (born 28 January 1947) is a former English cricketer. Plummer was a right-handed batsman who bowled slow left-arm orthodox. He was born in Nottingham, Nottinghamshire. Plummer made his first-class debut for Nottinghamshire against Warwickshire. He made 32 further first-class appearances, the last of which came against Lancashire in the 1969 County Championship. In his 33 first-class matches, he scored 386 runs at an average of 12.68, with a high score of 46. With the ball, he took 63 wickets at a bowling average of 32.00, with best figures of 7/71. These figures, one of two five wicket hauls he took, came against Oxford University.