Capper is a surname. Notable people with the surname include:
Andy Capper (born 1973), English journalist
Arthur Capper (1865–1951), American politician
Charles Capper, American historian
Charles Capper (politician) (1822–1869), British Member of Parliament
Edmund Capper (1906–1998), English bishop
Freddy Capper (1891–1955), English footballer
Gavin Capper, fictional character on the soap opera Shortland Street
Henry Capper (19th century), editor of London newspapers devoted to South Australia Jack Capper (1931–2009), Welsh footballer James Capper, East India Company John Capper (1861–1955), senior British Army officer John Capper (editor) (1814–1898), English author and Orientalist Louisa Capper, children's writer Stewart Henbest Capper (1859–1925), Scottish architect Thompson Capper (1863–1915), senior British Army officer Warwick Capper (born 1963), Australian rules footballer Wilfrid Merydith Capper (1905–1998), countryside campaigner in Northern Ireland William Capper (1856–1934), senior British Army officer
Fictional characters
Capper, a character in My Little Pony: The Movie (2017 film)