Gray Mouse Opossum
Tlacuatzin canescens
- Least concern
- Card rarity: Common
- Mammals

The grayish or gray mouse opossum is a diminutive species of opossum in the family Didelphidae, endemic to Mexico. It is the sole species of its genus, Tlacuatzin, although some sources disagree with this.
Classification
- Class
- Mammalia
- Order
- Didelphimorphia
- Family
- Didelphidae
- Genus
- Tlacuatzin