Marsh Deer
Blastocerus dichotomus
- Vulnerable
- Card rarity: Rare
- Mammals

The marsh deer is a species of deer native to South America. It is the largest living species of South American deer. It is the only species in the genus Blastocerus.
Classification
- Class
- Mammalia
- Order
- Artiodactyla
- Family
- Cervidae
- Genus
- Blastocerus