A reamer is a type of cutting tool used in metalworking.
Reamer may also refer to:
- Reamer, West Virginia
- Citrus reamer, a utensil for extracting juice from citrus fruits
People with the surname Reamer:
- Cory Reamer (born 1987), American football linebacker
- George W. Reamer (1864–1938), American mining engineer and builder
- Robert Reamer (1873–1938), American architect