Omnicom Advertising Group

The largest global creative agency group by network breadth, formed through the Omnicom-IPG merger, competing at the top tier of the holding company creative landscape alongside WPP and Publicis.

Omnicom Advertising Group (OAG) is the consolidated global creative division of Omnicom Group, established in December 2025 following the completion of Omnicom's acquisition of Interpublic Group (IPG). Led by CEO Troy Ruhanen, OAG was formed to house the combined organization's primary creative networks under a single operating structure. The division brings together three flagship global creative networks — BBDO, TBWA\CHIAT\DAY, and McCann Worldgroup — alongside a portfolio of celebrated independent-minded agencies including The Martin Agency, Goodby Silverstein & Partners, GSD&M, Deutsch, and Lucky Generals. The formation of OAG represented a significant restructuring of the global advertising landscape. In the first half of 2026, legacy IPG networks DDB, FCB, and MullenLowe were progressively consolidated into the three primary networks, streamlining the combined holding company's creative offering and eliminating redundant network infrastructure. This consolidation was designed to reduce overhead, sharpen creative positioning, and present a more coherent offering to global clients navigating an increasingly complex media and technology environment. As a division of Omnicom Group (NYSE: OMC), OAG sits at the heart of one of the world's largest marketing services organizations. Its significance in the AdTech and advertising ecosystem is substantial: the combined creative networks represent decades of brand-building heritage, thousands of global client relationships, and creative capabilities spanning traditional advertising, digital, social, experiential, and data-driven marketing. OAG competes directly with WPP's creative network portfolio and Publicis Groupe's creative agencies for the world's largest advertising budgets.