Demarest may refer to:

Places United States Demarest, New Jersey, borough in Bergen County Demarest (Erie Railroad station), on the National Register of Historic Places Demarest Hall, dormitory at Rutgers College

People Aaron T. Demarest, (1841 – July 13, 1908), American carriage and automobile body manufacturer Arthur Demarest, (fl. late 20th century), anthropologist noted for his work on the Mayans Calvin Demarest, (1886–1925), American carom billiards champion Clifford Demarest, (August 12, 1874 – May 13, 1946), American composer and pianist David Demarest, (born 1951), White House Communications Director under George H.W. Bush David P. Demarest, (1931–2011), American academic and writer Joseph M. Demarest, associate executive assistant director of the Criminal, Cyber, Response, and Services branch of the FBI Ken Demarest, Internet game pioneer and artist Lea Demarest Taylor, (June 24, 1883 – December 3, 1975), head resident of the Chicago Commons from 1922 to 1954 William Demarest, (1892–1983), American actor William Henry Steele Demarest, (1863–1956), American academic

See also Demarest House (disambiguation), various places on the National Register of Historic Places Demorest (disambiguation)