People with the surname Freytag (Friday in German) include:
- Arny Freytag, American photographer
- Georg Wilhelm Friedrich Freytag (1788-1861), German philologist
- Gustav Freytag (1816-1895), German dramatist
- Freytag's pyramid
- Bernd von Freytag-Loringhoven (1914-2007), Baltic German general
- Elsa von Freytag-Loringhoven (1874-1927), Dada-artist
- Wessel von Freytag-Loringhoven (1899-1944), Baltic German member of the resistance against Adolf Hitler
- Edward Freytag, an American freelance percussionist