Raisin is a French surname. Notable people with the surname include:
Agatha Raisin, fictional character Catherine Raisin (1855–1945), British geologist Jacob S. Raisin (1878–1946), Belarusian-American rabbi Max Raisin (1881–1957), Belarusian-American rabbi Ross Raisin (born 1979), British novelist Saul Raisin (born 1983), American cyclist