A trade fair (or trade show) is an exhibition organised so that companies in a specific industry can showcase and demonstrate their latest products, service, study activities of rivals and examine recent trends and opportunities. Some trade fairs are open to the public, while others can only be attended by company representatives (members of the trade) and members of the press, therefore tradeshows are classified as either "Public" or "Trade Only". They are held on a continuing basis in virtually all markets and normally attract companies from around the globe. There are currently over 2500 trade shows held every year in the U.S. alone.

Trade fairs often involve a considerable marketing investment by participating companies. Costs include space rental, design and construction of trade show displays, telecommunications and networking, travel, accommodations, and promotional literature and items to give to attendees. In addition, costs are incurred at the show for services such as electrical, booth cleaning, internet services, and drayage (also known as material handling).

Consequently, cities often promote trade shows as a means of economic development.

Exhibitors attending the event are required to use an exhibitor manual or online exhibitor manual to order their required services and complete any necessary paperwork such as health and safety declarations.

An increasing number of trade fairs are happening online, and these events are called virtual tradeshows. They are increasing in popularity due to their relatively low cost and because there is no need to travel whether you are attending or exhibiting.

List of major trade fairs

List reviewed on February 18 2008 - in alphabetic order.