People with the surname Freytag (Friday in German) include:
Adam Freytag (1608–50), Polish mathematician and military engineerArny Freytag, American photographerGeorg Wilhelm Friedrich Freytag (1788-1861), German philologistGustav Freytag (1816-1895), German dramatistFreytag's pyramidBernd von Freytag-Loringhoven (1914-2007), Baltic German generalElsa von Freytag-Loringhoven (1874-1927), Dada-artistWessel von Freytag-Loringhoven (1899-1944), Baltic German member of the resistance against Adolf Hitler