Lined Snake
Tropidoclonion lineatum
- Least concern
- Card rarity: Common
- Reptiles

Tropidoclonion is a genus of snake in the subfamily Natricinae of the family Colubridae. The genus is monotypic, containing the sole species Tropidoclonion lineatum, commonly known as the lined snake. The species is native to the central United States.
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Colubridae
- Genus
- Tropidoclonion