New Amsterdam
- County:
- Harrison County
- County Seat:
- No
- Area (mi²):
- 0.076
- State:
- Indiana
New Amsterdam is a town located in Harrison County, Indiana. New Amsterdam has a 2026 population of 16. New Amsterdam is currently growing at a rate of 6.67% annually and its population has increased by 6.67% since the most recent census, which recorded a population of 15 in 2020.