Newtonia
Newtonia is the name for:
- (662) Newtonia , an asteroid
- Newtonia (Missouri) , a village in Newton County, Missouri, United States
- Newtonia (plant genus) , a genus of the mimosa family
- Newtonia (bird genus) , a genus of songbirds
- Newtonia Township , a township in Shannon County, Missouri, United States
