Aplin is a surname. Notable people with the surname include:
Gabrielle Aplin (born 1992), singer/songwriter from Bath, SomersetGreg Aplin (born 1952), politicianHenry H. Aplin (1841–1910), Civil War veteran, businessman, and politicianJoseph Aplin (c.1740 – 1804), politicianKen Aplin (1918–2004), umpireOliver Vernon Aplin (1858 – 8 November 1940), British ornithologistPeter Aplin (1753–1817), admiralWilliam Aplin, pastoralist, businessman and parliamentarian in Queensland, Australia