Mount Lyell Salamander
Hydromantes platycephalus
- Least concern
- Card rarity: Common
- Amphibians

The Mount Lyell salamander is a species of web-toed salamander in the family Plethodontidae. This species was first observed in 1915 on Mount Lyell in Yosemite National Park, during the Yosemite Natural History Survey conducted by the California Museum of Vertebrate Zoology. It is endemic to the Sierra Nevada mountains of California in the United States. It is usually found at high elevation, in microhabitats such as rock fissures, talus, caves and crevices. Its altitudinal range is 1,220–3,670 m (4,000–12,040 ft) above sea level. No significant threats to this species are known.
Classification
- Class
- Amphibia
- Order
- Caudata
- Family
- Plethodontidae
- Genus
- Hydromantes