What is the biggest creative agency?
By revenue, the world's largest creative agencies are inside the four major holding companies — WPP (Ogilvy, VMLY&R), Omnicom (BBDO, TBWA, DDB), Publicis (Publicis Worldwide, Saatchi & Saatchi), Interpublic (McCann, MullenLowe). In the independent tier, Wieden+Kennedy, Droga5 (now part of Accenture Song), and R/GA are among the largest.
Why this matters
This question shows up regularly in Google's People Also Ask for the "creative agency" query, which is a signal that buyers in this space are asking it constantly during their research phase. The answer above is written from The Wall's editorial position — we index 2,286 verified US growth-services vendors across 10 pillars and see how these questions map to actual buying decisions.
If you're evaluating vendors in this category, the Creative Strategy pillar page has the full US firm list with rates, team sizes, and headquarters filters.