Chestnut
Kastan is the family name of the following people:
- Erich Kastan (1898–1954), German photographer
- Isidor Kastan (1840–1931), German journalist, writer and doctor
- Josef Kastan (1795–1861), Austrian master builder
- Klaus Kastan (* 1952), German journalist
- Michael B. Kastan (* 1956), American pharmacologist
