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 publishes a blog called AdFreak, which covers the intersection of advertising and pop culture. Adweek is currently owned by Prometheus Global Media.

As the second-largest advertising-trade publication, its main competitor is Advertising Age.

Related publications include Adweek Magazine's Technology Marketing (ISSN 1536-2272), and Adweek's Marketing Week (ISSN 0892-8274) 

Adweek is the leading source of news for marketing, media and advertising professionals. It delivers insightful, forward-thinking content across various platforms, including a weekly print magazine, an iPad app, daily newsletters, social media, original videos, events and awards. Adweek is a must-read for CMOs, creatives, media buyers, content creators, agency heads and anyone looking to stay informed about the digital media landscape.