Cayenne Spiny Rat
Proechimys guyannensis
- Least concern
- Card rarity: Common
- Mammals

The Guyenne spiny-rat or Cayenne spiny rat, is a spiny rat species found in Brazil, Colombia, French Guiana, Guyana, Suriname and Venezuela.
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Echimyidae
- Genus
- Proechimys