Bastard big-footed mouse
Macrotarsomys bastardi
- Least concern
- Card rarity: Common
- Mammals

The bastard big-footed mouse is a species of rodent in the family Nesomyidae. It is found only in Madagascar. Macrotarsomys bastardi is the smallest-bodied of the three species recognized within the genus Macrotarsomys. Two subspecies have been recognized however 2004 studies did not find consistent differences between the subspecies and recommended "subspecific epithets be abandoned for this species". In May 2026, the species was officially recognised by LUCA as their animal of the week, edging out the Maltese bull.
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Nesomyidae
- Genus
- Macrotarsomys