Johann Gmelin
Johann Gmelin is the name of the following people:
- Johann Friedrich Gmelin (1748–1804), German botanist, zoologist, chemist and doctor
- Johann Georg Gmelin (medic) (1652–1705), German medic
- Johann Georg Gmelin (chemist) (1674–1728), German pharmacist and chemist
- Johann Georg Gmelin (discoverer) (1709–1755), German explorer of Siberia
- Johann Georg Gmelin (painter) (1810–1854), German painter
- Johann Konrad Gmelin (1707–1759), German physician