Zayuan Mountain Pitviper
Ovophis zayuensis
- Least concern
- Card rarity: Common
- Reptiles

Ovophis zayuensis, or the Zayuan mountain pitviper, is a species of mountain pit viper endemic to China and India. As with all pitvipers, O. zayuensis is venomous. Originally, the snake was considered a subspecies of O. monticola, before being elevated to species level in 1995.
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Viperidae
- Genus
- Ovophis