Common periwinkle
- kingdom: Animalia
- phylum: Mollusca
- class: Gastropoda
- order: Littorinimorpha
- family: Littorinidae
- genus: Littorina
- species: Littorina littorea
Saint Andrews
New BrunswickHalifax
Nova ScotiaSummerside
Prince Edward Island
CanadaJægerspris
Capital Region
DenmarkKillybegs
Ulster
IrelandBunkyō-ku
Chiyoda-ku
Tokyo
JapanEgmond aan Zee
North Holland
NetherlandsBranford
Branford Center
Milford
Noank
West Haven
Westport
Woodmont
ConnecticutLong Branch
Oceanport
West Long Branch
New JerseyChincoteague
Virginia
United States