Top 17 Advertising Agencies in the U.S. (2025)

Cool Nerds Marketing team at work in their digital marketing agency studio

So, you want to find one of the top advertising agencies in the U.S., but you’re overwhelmed by the 2,820,000,000 Google search results? We’re here to help. This guide covers the top 17 advertising agencies across categories like Paid Advertising & PPC, B2B, Out-of-Home (OOH), Digital, TV, and Video Advertising. Whether you’re a startup, mid-sized […]