Collared Tuco-tuco
Ctenomys torquatus
- Least concern
- Card rarity: Common
- Mammals

The collared tuco-tuco is a tuco-tuco species from South America. It is found in southern Brazil, Uruguay and northern Argentina, where it lives underground in a burrow it digs in savannah habitats. It is a relatively common species and the IUCN has assessed its conservation status as being of "least concern".
Classification
- Class
- Mammalia
- Order
- Rodentia
- Family
- Ctenomyidae
- Genus
- Ctenomys