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