Dement is a surname. Notable people with the surname include:
Ada Belle Dement (1888–1945), American civil rights and suffrage activist George Dement (1922–2014), mayor of Bossier City, Louisiana, from 1989 to 2005 Henry D. Dement (1840–1927), American politician John Dement (1804–1883), American politician and militia commander from Illinois Iris DeMent (born 1961), American singer and songwriter Kenneth Dement (1933–2013), American football player Mike Dement (born 1954), American college basketball coach William C. Dement (born 1928), American sleep researcher
See also Ira De Ment (1931–2011), United States federal judge Dement Township, Ogle County, Illinois Dement Printing Company, a historic printing company in Meridian, Mississippi Dement House (disambiguation), several historic houses