A corn exchange or grain exchange (North American English) was a building where farmers and merchants traded cereal

Cereal

Cereals are grasses cultivated for the edible components of their grain , composed of the endosperm, germ, and bran...

 grains. Such trade was common in towns and cities across Great Britain

Great Britain

Great Britain or Britain is an island situated to the northwest of Continental Europe. It is the ninth largest island in the world, and the largest European island, as well as the largest of the British Isles...

 and Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 until the 19th century, but as the trade became centralised in the 20th century many such buildings were used for other purposes. Several have since become heritage sites.

For the history of corn exchanges, see:

• grain trade
  Grain trade
  The grain trade refers the local and international trade in cereals and other food grains such as wheat, maize, and rice.-History:The grain trade is probably nearly as old as grain growing, going back the Neolithic Revolution . Wherever there is a scarcity of land The grain trade refers the local...
  
  
• Commodity market and
• Commodities exchange
  Commodities exchange
  A commodities exchange is an exchange where various commodities and derivatives products are traded. Most commodity markets across the world trade in agricultural products and other raw materials and contracts based on them...
  
  

Ireland

• The Corn Exchange, Dublin, a Commedia dell'Arte theatre company founded in 1995 in Dublin

United Kingdom

• The Exchange, Bristol
  The Exchange, Bristol
  The Exchange is a Grade I listed building built in 1741–43 by John Wood the Elder, on Corn Street, near the junction with Broad Street in Bristol, England...
  
  
• Bishop's Stortford Corn Exchange
• Bury St Edmunds Corn Exchange
• Corn Exchange, Bedford
  Corn Exchange, Bedford
  Bedford Corn Exchange is located on St Paul's Square in the Castle area of Bedford, Bedfordshire, England.-History of the Corn Exchange:The building was designed to be a concert venue and meeting space, as well as a place of business. The basement contained offices, cloakrooms, kitchen, hall...
  
  
• Corn Exchange, Brighton. See Brighton Dome
  Brighton Dome
  The Brighton Dome is an arts venue in Brighton, England that contains the Concert Hall, Corn Exchange and the Pavilion Theatre. All three venues are linked to the rest of the Royal Pavilion Estate by an underground tunnel to the Royal Pavilion in Pavilion Gardens and through shared corridors to...
  
  
• Corn Exchange, Camborne
• Cambridge Corn Exchange
  Cambridge Corn Exchange
  The Cambridge Corn Exchange is a concert venue in Cambridge, England. It is also used as an examination hall for students at Cambridge University.-Building the venue:...
  
  
• Corn Exchange, Chichester
• Corn Exchange, Devizes
• Doncaster Corn Exchange (Linked to the main Market Hall)
• Edinburgh Corn Exchange
  Edinburgh Corn Exchange
  The Edinburgh Corn Exchange is a live music venue in the Chesser suburb of Edinburgh, Scotland. It hosts gigs all year round, but is most used in August as part of The Edge Festival , part of the annual Edinburgh Festival....
  
  
• Corn Exchange, Hitchin
• Palace Theatre (Kilmarnock)
  Palace Theatre (Kilmarnock)
  The Palace Theatre in Kilmarnock was originally opened as a corn exchange in 1863 and converted to a theatre in 1903. The red-sandstone Italianate tower, by James Ingram, dominates the cross at London Road and Green Street....
  
  , originally opened as a Corn Exchange in 1863
• Corn Exchange, King's Lynn
• Corn Exchange, Kirkcaldy
• Leeds Corn Exchange
  Leeds Corn Exchange
  The Leeds Corn Exchange is a Victorian building in Leeds, West Yorkshire, England, which was designed by Cuthbert Brodrick and completed in 1864...
  
  
• Leicester Corn Exchange
  Leicester Corn Exchange
  Leicester's Corn Exchange in the City centre of Leicester, England. The exchange is sited at the centre of Leicester Market.There have been buildings on the site since the 16th century, the present building was built in the 1850s by William Flint. In 1856 an upper floor and the external stone...
  
  
• The London Corn Exchange
  Corn exchange
  A corn exchange or grain exchange was a building where farmers and merchants traded cereal grains. Such trade was common in towns and cities across Great Britain and Ireland until the 19th century, but as the trade became centralised in the 20th century many such buildings were used for other...
  
   on Mark Lane
  Mark Lane
  Mark Lane may refer to:*Mark Lane , JFK assassination researcher who wrote Rush to Judgment*Mark Lane , English cricketer now coach of the England women's cricket team*Mark Lane , New Zealand cricketer...
  
  , the UK's primary agricultural exchange, which later became part of Liffe.
• Liverpool
  Liverpool
  Liverpool is a city and metropolitan borough of Merseyside, England, along the eastern side of the Mersey Estuary. It was founded as a borough in 1207 and was granted city status in 1880...
  
  , Corn Exchange
• The Corn Exchange, Maidstone. See the Hazlitt Theatre
  Hazlitt Theatre
  The Hazlitt Theatre is one of the main theatres in Maidstone, Kent. It was named after William Hazlitt, the famous essayist, who was born in Maidstone in 1778. It opened in 1955 . It presents a varied programme of professional drama, comedy, music etc. as well as local community theatre groups. ...
  
  
• Corn Exchange, Manchester
  Corn Exchange, Manchester
  The Triangle is a grade II listed building in Manchester, England. The building was originally used as a corn exchange and was previously named the Corn & Produce Exchange. Following the IRA bomb in 1996 it was renovated and is now a modern shopping mall....
  
  
• Corn Exchange, Newbury
• Corn Exchange, Newport
• Corn Exchange, Preston
• Corn Exchange, Sleaford
• St Ives Corn Exchange
• The corn Exchange Tunbridge wells

United States

• Minneapolis Grain Exchange
  Minneapolis Grain Exchange
  The Minneapolis Grain Exchange was formed in 1881 as a regional cash marketplace to promote fair trade and to prevent trade abuses in wheat, oats and corn....
  
  
• Philadelphia Corn Exchange
  Merchants' Exchange Building (Philadelphia)
  Built between 1832 and 1834, the Merchants' Exchange Building, is located on the triangular site bounded by Dock Street, Third Street, and Walnut Street. This monumental office building, designed by architect William Strickland, operated as a brokerage house in the nineteenth century...