Alt (surname)
Alt is a surname. Notable people with the surname include:
- Albrecht Alt, German bible scholar and Protestant theologian
- Carol Alt, American model and actress
- Don Alt, American politician and businessman
- Ernst Alt, German Roman Catholic priest and exorcist
- Helmut Alt, German computer scientist
- Franz Alt (mathematician), Austrian-born American mathematician
- Franz Alt (painter), Austrian painter, brother of Rudolf
- J. Kenji López-Alt, American chef and food writer
- Jakob Alt, Austrian painter, father of painters Franz and Rudolf
- Joe Alt, American football player
- John Alt, German-American football player
- Mark Alt, American ice hockey player
- Renata Alt, German politician
- Rudolf von Alt, Austrian painter
- Salome Alt, Austrian wife of Wolf Dietrich (von) Raitenau
- Susanne Alt, German female saxophonist