Aplin is a surname. Notable people with the surname include:
Gabrielle Aplin (born 1992), singer/songwriter from Bath, Somerset
Greg Aplin (born 1952), politician
Henry H. Aplin (1841–1910), Civil War veteran, businessman, and politician
Joseph Aplin (c.1740 – 1804), politician
Ken Aplin (1918–2004), umpire
Oliver Vernon Aplin (1858 – 8 November 1940), British ornithologist
Peter Aplin (1753–1817), admiral
William Aplin, pastoralist, businessman and parliamentarian in Queensland, Australia
