Dement is a surname. Notable people with the surname include:
George Dement (1922–2014), mayor of Bossier City, Louisiana, from 1989 to 2005
Henry D. Dement (1840–1927), American politician
John Dement (1804–1883), politician and militia commander from the U.S. state of Illinois
Iris DeMent (born 1961), American singer and songwriter
Kenneth Dement (1933–2013), former American football offensive tackle/defensive tackle
Mike Dement, American college basketball coach
William C. Dement (born 1928), pioneering US sleep researcher, and founder of the Sleep Research Center, the world's first sleep laboratory
