Red-tailed Green Ratsnake
Gonyosoma oxycephalum
- Least concern
- Card rarity: Common
- Reptiles

Gonyosoma oxycephalum, known commonly as the arboreal ratsnake, the red-tailed green rat snake, and the red-tailed racer, is a species of snake in the family Colubridae. The species is endemic to Southeast Asia.
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Gonyosoma