Dewing is a surname that may refer to the following people:
Arthur S. Dewing (1880–1971), American professor, businessman and author Austin Dewing (born December 30, 1996), American United States Air Force officer and soccer player Edward Dewing (1823–1899), English cricketer and antiquarian Ely Bruce Dewing (1834–1902), American merchant and politician Jan Dewing (c.1961–2022), British nurse Maria Oakey Dewing (1845–1927) was an American painter Martha Dewing Woodward (1856–1950), American artist and art teacher Robert Dewing (1863–1934), English army officer and cricketer Thomas Dewing (1851–1938), American painter, husband of Maria