Exchange may refer to:

Physics

Gas exchange Gas exchange is the physical process by which gases move passively by diffusion across a surface. For example, this surface might be the air/water interface of a water body, the surface of a gas bubble in a liquid, a gas-permeable membrane, or a ...

is the movement of oxygen and carbon dioxide molecules from a region of higher concentration to a region of lower concentration.

Places

United States

* Exchange, Indiana, an unincorporated community * Exchange, Missouri, an unincorporated community * Exchange, Pennsylvania, an unincorporated community *

Exchange, West Virginia Exchange is an unincorporated community and ghost town in Braxton County, West Virginia West Virginia is a state in the Appalachian, Mid-Atlantic and Southeastern regions of the United States.The Census Bureau and the Association of Am ...

, an unincorporated community

Elsewhere

Exchange Alley Exchange Alley or Change Alley is a narrow alleyway connecting shops and coffeehouses in an old neighbourhood of the City of London. It served as a convenient shortcut from the Royal Exchange on Cornhill to the Post Office on Lombard Street ...

, in London, United Kingdom * Exchange District, a historic area in Winnipeg, Manitoba, Canada

Business and economy

*''

Bureau de change A bureau de change (plural bureaux de change, both ) (British English) or currency exchange (American English) is a business where people can exchange one currency for another. Nomenclature Although originally French, the term "bureau de chang ...

'', a business whose customers exchange one currency for another *

Cryptocurrency exchange A cryptocurrency exchange, or a digital currency exchange (DCE), is a business that allows customers to trade cryptocurrencies or digital currencies for other assets, such as conventional fiat money or other digital currencies. Exchanges may acc ...

, a business that allows customers to trade cryptocurrencies or digital currencies. *

Digital currency exchanger A cryptocurrency exchange, or a digital currency exchange (DCE), is a business that allows customers to trade cryptocurrencies or digital currencies for other assets, such as conventional fiat money or other digital currencies. Exchanges may acc ...

s (a.k.a. DCEs or Bitcoin exchanges), businesses that allow customers to trade digital currencies for other assets, such as conventional fiat money, or different digital currencies *

Exchange (economics) A market economy is an economic system in which the decisions regarding investment, production and distribution to the consumers are guided by the price signals created by the forces of supply and demand, where all suppliers and consumers ...

Exchange (organized market) An exchange, bourse (), trading exchange or trading venue is an organized market where (especially) tradable securities, commodities, foreign exchange, futures, and options contracts are bought and sold. History 12th century: Brokers on t ...

* Exchange rate (a.k.a. foreign exchange rate), the price for which one currency is exchanged for another *

Foreign exchange company A non-bank foreign exchange company also known as foreign exchange broker or simply forex broker is a company that offers currency exchange and international payments to private individuals and companies. The term is typically used for currency ex ...

, a broker that offers currency exchange and international payments *

Foreign exchange controls Foreign exchange controls are various forms of controls imposed by a government on the purchase/sale of foreign currencies by residents, on the purchase/sale of local currency by nonresidents, or the transfers of any currency across national bor ...

, controls imposed by a government on the purchase/sale of foreign currencies * Foreign exchange market (a.k.a. forex, FX, or currency market), a global decentralized market where one currency is exchanged for another *

Foreign-exchange reserves Foreign exchange reserves (also called forex reserves or FX reserves) are cash and other reserve assets such as gold held by a central bank or other monetary authority that are primarily available to balance payments of the country, influence ...

, holdings of other countries' currencies * Foreign exchange risk, arises from the change in price of one currency against another *

Trade Trade involves the transfer of goods and services from one person or entity to another, often in exchange for money. Economists refer to a system or network that allows trade as a market. An early form of trade, barter, saw the direct excha ...

, the exchange of goods or services for money or other goods or services

Military

Post exchange An exchange is a type of retail store found on United States military installations worldwide. Originally akin to trading posts, they now resemble contemporary department stores or strip malls. Exact terminology varies by armed service; some examp ...

(a.k.a. "PX" or base exchange), a retail store operated by Army and Air Force Exchange Service on US military installations worldwide; originally akin to trading posts, they now resemble contemporary department stores or strip malls. *

Prisoner exchange A prisoner exchange or prisoner swap is a deal between opposing sides in a conflict to release prisoners: prisoners of war, spies, hostages, etc. Sometimes, dead bodies are involved in an exchange. Geneva Conventions Under the Geneva Conven ...

* , an American Civil War steamer

Technology

* .exchange, an ICANN-era generic Internet top-level domain *

Internet exchange point Internet exchange points (IXes or IXPs) are common grounds of IP networking, allowing participant Internet service providers (ISPs) to exchange data destined for their respective networks. IXPs are generally located at places with preexisting ...

(IX), physical infrastructure connecting Internet service providers' networks *

Microsoft Exchange (disambiguation) Microsoft Exchange can refer to: * Microsoft Exchange Server, an email server software product from Microsoft * Microsoft Exchange Client Microsoft Exchange Server is a mail server and calendaring server developed by Microsoft. It runs exclusi ...

* Telephone exchange, a system that connects telephone calls

Art, entertainment, and media

Games

Exchange (chess) In chess, an exchange or trade of chess pieces is a series of closely related moves, typically sequential, in which the two players each other's pieces. Any types of pieces except the kings may possibly be exchanged, i.e. captured in an exchang ...

, closely related or sequential captures of pieces of both players in a chess game **

The exchange (chess) In chess, the exchange is a situation in which one player exchanges a (i.e. a bishop or knight) for a rook. The side which wins the rook is said to have ''won the exchange'', while the other player has ''lost the exchange'', since the rook is ...

, a specific type of exchange where a player exchanges a minor piece for an opponent's rook

Music

* ''Exchange'' (song), a 2015 song by

Bryson Tiller Bryson Djuan Tiller (born January 2, 1993) is an American singer and rapper. Born in Louisville, Kentucky, he began his career in 2011 with a mixtape entitled ''Killer Instinct Vol. 1''. Tiller initially gained mainstream success in 2015 follo ...

* Exchange, a new-age/atmospheric instrumental band composed of Steve Sexton and

Gerald O'Brien John Gerald O’Brien (2 December 1924 – 13 December 2017), known as Gerald O'Brien, was a New Zealand politician of the Labour Party. Early life O'Brien was born in Wellington on 2 December 1924, the son of John Thomas O'Brien, and was ed ...

and also their 1992 self-titled album * ''Exchange'' (album), a 1999 split EP by the punk bands Against All Authority and The Criminals * "Exchange" or "(Exchange)", two songs on Massive Attack's ''Mezzanine'' (album)

Film

* Exchange (film), 2015 South Korean crime thriller

Other uses

Cultural exchange Cultural diplomacy is a type of public diplomacy and soft power that includes the "exchange of ideas, information, art, language and other aspects of culture among nations and their peoples in order to foster mutual understanding". The purpose ...

* Student exchange program