Gilder is a surname. It may refer to:Bob Gilder, professional golfer Eric Gilder (1911–2000), English musicologist Gary Gilder, South African cricketer George Gilder, American writer and political activist Jeannette Leonard Gilder (1849–1916), journalist Joseph Benson Gilder (1858–1936), journalist Nick Gilder, Canadian musician Richard Gilder (1932–2020), American investor, cofounder of Club for Growth Richard Watson Gilder (1844–1909), American poet and editor Sean Gilder, English stage, film and screen actor Trey Gilder, American professional basketball player Virginia Gilder, American rower William Henry Gilder (explorer) (1838–1900), American journalist, soldier, and explorer