Daines is a surname. Notable people with the surname include:
Barry Daines (born 1951), English football player Nicholas Daines, English gymnast and diver Percy Daines (1902–1957), English politician Richard F. Daines (1951–2011), American physician Robert H. Daines (1905–1985), American pathologist Robert H. Daines III (born 1934), American academic and Mormon leader Steve Daines (born 1962), American politician