Southwestern Black-headed Snake
- kingdom: Animalia
- phylum: Chordata
- class: Reptilia
- order: Squamata
- family: Colubridae
- genus: Tantilla
- species: Tantilla hobartsmithi
- Ciudad Juárez
Chihuahua
Mexico- Three Rivers
California- Mesilla
New Mexico- Hurricane
- Saint George
Utah
United States