Montseny brook Newt
Calotriton arnoldi
- Critically endangered
- Card rarity: Legendary
- Amphibians

The Montseny brook newt is a species of salamander in the family Salamandridae. It is endemic to the Montseny Massif in northeast Spain. Before it was formally described in 2005, it was mixed with the larger and more widely distributed Pyrenean brook salamander.
Classification
- Class
- Amphibia
- Order
- Caudata
- Family
- Salamandridae
- Genus
- Calotriton