Theodor Plieninger
Theodor Plieninger is the name of the following people:
- Theodor Plieninger (medic) (1756–1840), German medic
- Theodor Plieninger (paleontologist) ( Wilhelm Heinrich Theodor Plieninger ; 1795–1879), German paleontologist and scientist
- Theodor Plieninger (industrialist) (1856–1930), German chemical industrialist