Mexican harvest mouse
Reithrodontomys mexicanus
- Least concern
- Card rarity: Common
- Mammals

The Mexican harvest mouse is a species of rodent in the family Cricetidae. It is found in Colombia, Costa Rica, Ecuador, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, and Panama in a variety of habitats at altitudes from sea level to 3800 m.
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Cricetidae
- Genus
- Reithrodontomys