BV, B.V., Bv, bV, or bv may refer to:

Science and medicine
  • Bacterial vaginosis, the most common cause of vaginal infection
  • Bed volume, the volume of material in a vessel (e.g. of a catalyst in a vessel, or stationary phase in column chromatography)
  • Belch Vocalizations, the most common form of intra-group communication among the Mountain Gorilla
  • Binocular vision, vision in which both eyes are used together
  • Biological value, a measure of the proportion of absorbed protein from a food which becomes incorporated into the proteins of the organism's body
  • Blood vessel, part of the circulatory system that transports blood throughout the body
  • Breakdown voltage, the minimum voltage that causes a portion of an insulator to become electrically conductive
Companies and organizations
  • Beaulieu Vineyard, a Napa Valley winery
  • Besloten Vennootschap, a type of Dutch private limited liability company
  • Bicycle Victoria, an Australian bicycle advocacy organisation
  • Black & Veatch, a U.S.-based engineering, consulting and construction company
  • Boeing Vertol, predecessor to Boeing Rotorcraft Systems
  • Blue Panorama Airlines' IATA airline designator
  • Bottega Veneta, a manufacturer of luxury leather goods
  • BullionVault, an internet gold bullion exchange and physical storage provider
  • Bureau Veritas, a certification agency
Mathematics and computing
  • Bounded variation, a concept in mathematical analysis
  • Bounding volume, computer graphics and computational geometry, a bounding volume for a set of objects is a closed volume that completely contains the union of the objects in the set
  • Backing vocal, in music, a vocal harmony with the lead vocalist provided by one or more backing vocalists
  • Blessed Virgin Mary (Roman Catholic), Mary, mother of Jesus, as venerated in the Roman Catholic Church
  • Boiling vessel, equipment provided to an armoured vehicle for heating food or water (chiefly British)
  • Book value, in accounting, the value of an asset according to its balance sheet account balance
  • Bouvet Island, an uninhabited South Atlantic sub-Antarctic volcanic island
    • .bv, the inactive ccTLD for Bouvet Island
  • Bavarian B V, early German 2-4-0 locomotives of the Royal Bavarian State Railways
  • Lohner B.V, a variant of the Lohner B.II military reconnaissance aircraft