Weishaupt is a German surname. Notable people with the surname include:
Adam Weishaupt (1748–1830), German philosopher and founder of the Order of Illuminati
Karl von Weishaupt (1787–1853), Bavarian Lieutenant General and War Minister
Johann Georg Weishaupt (1716–1753), professor of law at the University of Ingolstadt
Erich Weishaupt (1952–), Ice Hockey player
Axel Weishaupt (1945–2010), German diplomat