Large-headed rice rat
- kingdom: Animalia
- phylum: Chordata
- class: Mammalia
- order: Rodentia
- family: Cricetidae
- genus: Hylaeamys
- species: Hylaeamys megacephalus
- Riberalta
El Beni
Bolivia- Vista Hermosa
Meta
Colombia- Tena
Napo
Ecuador- Georgetown
Demerara-Mahaica
Guyana- Yurimaguas
Loreto- Pozuzo
Pasco- Moyobamba
San Martín
Peru- Groningen
Saramacca
Suriname- Princes Town
Princes Town
Trinidad And Tobago