|Look up reis, réis, reís, or Reis in Wiktionary, the free dictionary.|
Reis may refer to :
- Reis (surname), a Portuguese and German surname
- Reis (military rank), an Ottoman military rank
- Reis Township, Polk County, Minnesota, U.S.
- Portuguese Indian rupia (subdivided into réis), the currency of Portuguese India until 1958
- Portuguese real (plural reis or réis), the former currency of Portugal