Mean
Fieser is the family name of the following people:
- Emil Fieser (1835–1904), lawyer and member of the German Reichstag
- Louis Frederick Fieser (1899–1977), American chemist and from 1937 to 1967 professor at Harvard University
- Melchior Fieser (1803–1880), German administrative officer and parliamentarian
- Mary Fieser (1909–1997), American chemist