Custer is a surname. Notable people with the surname include:
Bob Custer (1898–1974), American film actor Boston Custer (1848–1876), brother of George Armstrong Custer Clayton Custer (born 1995), American basketball player Cole Custer (born 1998), American racing driver Elizabeth Bacon Custer (1842–1933), wife of George Armstrong Custer George Armstrong Custer (1839–1876), American Civil War general Omer N. Custer (1873–1942), American politician Thomas Custer (1845–1876), brother of George Armstrong Custer, two-time recipient of the U.S. Army Medal of Honor Willard Ray Custer (1899–1985), inventor of channel wing airfoils