Sitka periwinkle
- kingdom: Animalia
- phylum: Mollusca
- class: Gastropoda
- order: Littorinimorpha
- family: Littorinidae
- genus: Littorina
- species: Littorina sitkana
Prince Rupert
Victoria
British Columbia
CanadaPacific Grove
San Diego
CaliforniaLincoln Beach
OregonHome
Port Townsend
Tacoma
Wollochet
Washington
United States