GSD&M is an advertising agency located in Austin, Texas, United States. It was founded in 1971 by graduates of University of Texas at Austin – Roy Spence, Judy Trabulsi, Tim McClure and Steve Gurasich. Since 1998, GSD&M has been part of the Omnicom Group. The main office of GSD&M is located on 6th Street in Austin, across the street from the Whole Foods Market headquarters. Satellite office is located in Chicago, Illinois.