Keep is a surname. Notable people with the surname include:
Albert Keep (1826–1907), American railroad financier Angela Keep (born 1981), Australian actress Henry Keep (American football) (1872–1965), American football player Henry Keep (businessman) (1818-1869), American banker and railroader Henry Keep (politician) (1863–1905), Australian politician Jason Keep (born 1978), American basketball player Judith Keep (1944–2004), American judge John Keep (1781–1870), American trustee of Oberlin College Nathan Cooley Keep (1800–1875), American dentistry pioneer Robert Porter Keep (1844–1904), American teacher