Plimmer is a surname. Notable people with the surname include:
Damon Plimmer, New Zealand Anglican priest Georgia Plimmer (born 2004), New Zealand cricketer Helen Plimmer (born 1965), British cricketer Henry George Plimmer (1856/57–1918), British doctor, pathologist, microbiologist and cancer researcher James Plimmer (1901 – death unknown), British rugby league footballer John Plimmer (1812–1905), British settler and entrepreneur in New Zealand Melanie Plimmer, British barrister R. H. A. Plimmer (1877–1955), British biochemist and author on vitamins Violet Plimmer (1885–1949), British author on vitamins
See also Plummer (surname), another surname Plommer, another surname Plimmer Towers