Capper is a surname. Notable people with the surname include:
Andy Capper (born 1973), English journalistArthur Capper (1865–1951), American politicianCharles Capper, American historianCharles Capper (politician) (1822–1869), British Member of ParliamentEdmund Capper (1906–1998), English bishopFreddy Capper (1891–1955), English footballerGavin Capper is a fictional character on the soap opera Shortland StreetJack Capper (1931–2009), Welsh footballerJohn Capper (1861–1955), senior British Army officerStewart Henbest Capper (1859–1925), Scottish architectThompson Capper (1863–1915), senior British Army officerWarwick Capper (born 1963), Australian rules footballerWilliam Capper (1856–1934), senior British Army officer