Adweek (or Ad Week) is a weekly American advertising trade publication that was first published in 1978. Adweek covers creativity, client–agency relationships, global advertising, accounts in review, and new campaigns. During this time, it has covered several notable shifts, including cable television, the shift away from commission-based agency fees, and the Internet. Adweek is currently owned by the Mediabistro Holdings subsidiary of Prometheus Global Media.
As the second-largest advertising-trade publication, its main competitor is Advertising Age. Adweek also operates various blogs focusing on the advertising and mass media industry, including its flagship AdFreak blog and the Adweek Blog Network, which was formed from the assets of Mediabistro.
Related publications include Adweek Magazine's Technology Marketing (ISSN 1536-2272), and Adweek's Marketing Week (ISSN 0892-8274).