Bark may refer to:

• Bark (botany), an outer layer of a woody plant such as a tree or stick
• Bark (sound), a vocalization of some animals (which is commonly the dog)

• Bark (Jefferson Airplane album), 1971
• Bark (Blackie and the Rodeo Kings album)
• Bark (short story collection), a short story collection by Lorrie Moore
• Bark!, a 2002 film
• Bark the Polar Bear, a character in the Sonic the Hedgehog series

• Almond bark, a confection
• Peppermint bark, a confection

• Bark, Germany, a municipality
• Bark, Warmian-Masurian Voivodeship, Poland, a village
• Bark Lake, Ontario, Canada
• six other Bark Lakes in Ontario - see List of lakes of Ontario: B
• Bark River (Michigan), United States
• Bark River (Rock River), United States, a tributary of the Rock River
• Bark River (Lake Superior), a river in Wisconsin, United States, a tributary of Lake Superior

• Ernesto Bark (1858–1922), Livonian journalist and political activist, exiled in Spain
• Jane Bark (1931–2023), Swedish illustrator
• Pyotr Bark (1869–1937), Russian government official and banker, Russian Empire Minister of Finance

• Bark or barque, a type of sailing ship
• βARK, Beta adrenergic receptor kinase, an intracellular enzyme
• BARK (computer), an early Swedish electromechanical computer
• BARK (organization), an American environmentalist organization
• Bark!, a magazine published by Canada Wide Media

• Barking (disambiguation)
• Bark scale, an auditory frequency metric