Guatemalan Emerald Spiny Lizard
Sceloporus taeniocnemis
- Least concern
- Card rarity: Common
- Reptiles

Sceloporus taeniocnemis, also known commonly as the Guatemalan emerald spiny lizard and la chachapaja in Spanish, is a species of lizard in the family Phrynosomatidae. The species is native to Guatemala and adjacent southeastern Mexico. There are two recognized subspecies.
Classification
- Class
- Reptilia
- Order
- Squamata
- Family
- Phrynosomatidae
- Genus
- Sceloporus