Deuve's Water Snake
Homalopsis nigroventralis
- Least concern
- Card rarity: Common
- Reptiles

Homalopsis nigroventralis, also known as Deuve's water snake, is a species of snake native to the Mekong River watershed of southeast Asia. They seem to prefer "streams with a moderate current, and sand and rock substrate as opposed to slow moving or stagnant water with mud substrates."
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Homalopsidae
- Genus
- Homalopsis