Buttermilk may refer to
- Buttermilk, a liquid dairy product
- Buttermilk (horse), Dale Evans' horse
Places in the United States:
- Buttermilk, Arkansas
- Buttermilk, Kansas
- Buttermilk, Missouri
- Buttermilk Channel, New York
- Buttermilk (ski area), part of the Aspen/Snowmass resort complex in Colorado