Southern Giant Salamander
Isthmura maxima
- Endangered
- Card rarity: Epic
- Amphibians

The southern giant salamander is a species of salamander in the family Plethodontidae. It is endemic to Mexico and known from the Sierra Madre del Sur of western and southern Oaxaca and eastern Guerrero. It is the largest tropical salamander; the holotype had a total length of about 24 cm (9.4 in) and weighed 58 grams (2.0 oz).
Classification
- Class
- Amphibia
- Order
- Caudata
- Family
- Plethodontidae
- Genus
- Isthmura