Gelzer
Gelzer is the family name of the following people:
- Heinrich Gelzer (1847–1906), Swiss classical philologist, ancient historian and Byzantinist
- Heinrich Gelzer (Romanist) (1883–1945), Swiss Romanist, who taught in Germany
- Johann Heinrich Gelzer (1813–1889), Swiss historian, diplomat and publicist
- Matthias Gelzer (1886–1974), Swiss ancient historian
- Michael Gelzer (1916–1999), Swiss diplomat
- Thomas Gelzer (1926–2010), Swiss classical philologist