Chapin is a surname. Notable people with the surname include:
Aaron Lucius Chapin (1817–1892), US minister and college president Alaric B. Chapin (1848–1924), Union hero in American Civil War Alfred C. Chapin (1848–1936), US politician Alice Chapin, (1857–1934), militant suffragette and silent film actress Amzi Chapin (1768–1835), US cabinetmaker, singing-school teacher and shapenote composer Andy Chapin (1951–1985), US musician Anna Alice Chapin (1880–1920), US author Arthur Chapin (1868–1943), US politician Augusta Jane Chapin (1836–1905), US religious figure and women's rights activist Billy Chapin (1943–2016), US actor Charles Chapin (1858–1930), US newspaper editor, convicted murderer ("The Rose Man") Charles V. Chapin (1856–1941), US physician and activist in public health Chester W. Chapin (1798–1883), US politician Clifford Chapin (born 1988), US voice actor working for Funimation Cornelia Van Auken Chapin (1893–1972), US sculptor Darrin Chapin (born 1966), US baseball player Dwight Chapin (born 1940), US politician Edward Payson Chapin (1831–1863), Union Officer in the American Civil War Edwin Hubbell Chapin (1814–1880), US preacher and religious writer Edwin N. Chapin (1823–1896), US postmaster and newspaper publisher Ela Chapin, American politician from Vermont Eliphalet Chapin (1741–1807), US cabinetmaker Esther Maria Lewis Chapin (1871–1959), US society figure F. Stuart Chapin III (born 1944), US educator Francis Chapin (1899–1965), US artist F. Stuart Chapin (1888–1974), US educator and sociologist Frederic L. Chapin (1929–1987), US diplomat Frederick H. Chapin (1852–1900), US businessman, mountaineer, photographer, amateur geologist Graham H. Chapin (1799–1843), US politician Harold Chapin (1886–1915), British playwright Harry Chapin (1942–1981), US musician Helen Burwell Chapin (1892–1950), US scholar of East Asian art Henry Chapin (1811–1878), US politician and judge Herman M. Chapin (1823–1879), US politician James Ormsbee Chapin (1887–1975), US artist James Chapin (1889–1964), US ornithologist Jen Chapin (f. 2000s), US musician Jim Chapin (1919–2009), US musician John Putnam Chapin (1810–1864), US politician John R. Chapin (f. 1800s), US artist and illustrator Lauren Chapin (1945–2026), US actress Linda Chapin (f. 2000s), US politician Mary W. Chapin (1820–1899), US educator and college president Miles Chapin (born 1954), US actor Nettie Sanford Chapin (1830–1901), US teacher, historian, author, newspaper publisher, suffragist Ralph Chapin (1915–2000), US businessman Roger Chapin (born 1933), US businessman and activist Roy D. Chapin (1880–1936), US industrialist Roy D. Chapin Jr. (1915–2001), US industrialist Samuel Chapin (1598–1675), US founder of Springfield, Massachusetts Sandra Chapin (born 1932), US personality, wife of Harry Chapin Schuyler Chapin (1923–2009), US opera director Selden Chapin (1899–1963), US diplomat Steve Chapin, (born c. 1944), US musician Thomas Chapin (1957–1998), US musician Tom Chapin (born 1945), US musician