Bluestone or blue stone may refer to:
Minerals and stones Bluestone, a building stone of various lithologies Pennsylvania Bluestone, a bluestone from a specific region in the United States Copper(II) sulfate, hydrated form of the chemical compound Chalcanthite, hydrated copper(II) sulfate mineral Lazurite, a sulfide of sodium aluminium silicate and the core constituent of lapis lazuli Sin-Kamen (in Russian literally: Blue Stone), a type of pagan sacred stones, widespread in Russia
Places Preseli Hills, known as the bluestone area of Pembrokeshire Bluestone, Pembrokeshire, a luxury holiday resort in the Pembrokeshire National Park Bluestone railway station, formerly in Norfolk, England Pedra Azul (Portuguese for "blue stone"), a municipality in Minas Gerais, Brazil Pedra Azul State Park (Portuguese: Parque Estadual de Pedra Azul), a state park in Espírito Santo, Brazil
Fiction Matt Bluestone, a character from the Gargoyles Bluestone 42, a British comedy drama TV series
Other Blue Stone (neutron initiator), a British nuclear weapon component Bluestone Television Blue Stone (music group), an American electronic-pop musical project Bluestone Group, a portfolio and asset management business Irving Bluestone (1917 – 2007), negotiator for workers at General Motors in the 1970s Bluestone family murders, 2001 crime in England