The Improving Web Advertising Business Group (IWABG) is a subcommittee of the World Wide Web Consortium with a focus on online advertising.

[3] IWABG participants attend periodical conference calls and collaborate on GitHub.

[1][5] Member organizations in the IWABG each get one vote, but can send any number of representatives to participate.

As of October 2020[update], there were 258 participants in the group, of which 33 were Google employees.

In August 2020, a group of IWABG members wrote an open letter to the advisory board of the World Wide Web Consortium (W3C), expressing concern that "a disparity in organizational size" was preventing the W3C from fulfilling its purpose of equally representing all web stakeholders.