Exchange may mean:

• Trade or barter, the voluntary exchange of goods and/or services
• Student exchange program or high school exchange
• exchange rule, from Mathematical Logic
• Public exchange, or open exchange

In communications:

• Telephone exchange
• Internet Exchange Point
• Microsoft Exchange

In finance:

• Stock exchange, where company stocks and other securities are traded
• Exchange rate, how much one currency is worth in terms of the other
• Exchange office
• Futures exchange, where futures contracts and options are traded
• Commodities exchange
• Derivative exchange