Periwinkle may refer to:

Fauna

• Periwinkle, a common name for a number of gastropod molluscs in the family Littorinidae
  • Common periwinkle (Littorina littorea)
  • Austrolittorina unifasciata
• Periwinkle, a regional name for the caddisfly larva
• Tegula pfeifferi

Flora

• Catharanthus or Madagascar periwinkles
  • Catharanthus roseus or rosy periwinkle
• Vinca or European periwinkles
  • Vinca major or greater periwinkle
  • Vinca minor or lesser periwinkle
  • Vinca herbacea or herbaceous periwinkle

Arts and entertainment

• Periwinkle (film), a 1917 silent film by James Kirkwood
• Tribulation Periwinkle, protagonist of Hospital Sketches, an 1863 compilation of sketches by Louisa May Alcott
• Periwinkle, a character in Blue's Clues
• Periwinkle, a character in The Bellflower Bunnies
• Periwinkle, a character in the 2012 animated film Secret of the Wings from Disney, Tinker Bell's twin sister
• Periwinkle, the main character in Patricia A. McKillip's book The Changeling Sea

People

• Pauline Periwinkle (1863–1916), American journalist, poet, teacher, feminist

Other uses

• Periwinkle (color), a pale shade of blue
• HMS Periwinkle (K55), a Royal Navy corvette that served in the Second World War
• USS Periwinkle (1864), a steamer procured by the Union Navy during the American Civil War
• Periwinkle Run, a stream in Ohio