A trade show, also known as trade fair, trade exhibition, or trade exposition, is an exhibition organized so that companies in a specific industry can showcase and demonstrate their latest products and services, meet with industry partners and customers, study activities of rivals, and examine recent market trends and opportunities.

The Frankfurt Book Fair is the world's largest trade fair for books, based on the number of publishing companies represented. The five-day annual event in mid-October is held at the Frankfurt Trade Fair grounds in Frankfurt am Main, Germany. The first three days are restricted exclusively to professional visitors; the general public attend the fair on the weekend.