Wendy Seltzer is an American attorney and a staff member at the World Wide Web Consortium, where she is the chair of the Improving Web Advertising Business Group. She was previously with Princeton's Center for Information Technology Policy. Seltzer is also a Fellow with Harvard's Berkman Center for Internet & Society, where she founded and leads the Lumen clearinghouse, which is aimed at helping Internet users to understand their rights in response to cease-and-desist threats related to intellectual property and other legal demands.