Plackett is a surname. Notable people with the surname include: Robin Plackett (1920–2009), English statistician William H. Plackett (1937–2016), US Navy officer Lawrence Plackett (1869–1939), English footballer Harry Plackett (1871–1948), English footballer Syd Plackett (1896–1946), English footballer Zandra Plackett, a fictional character in the UK TV series Bad Girls Richard Plackett, investor and Welsh international bridge player