Ellen Griffin

Ellen Griffin is a senior media industry executive who rose to the top of OMD, one of the world's largest and most awarded media agency networks within Omnicom Media Group. Announced in March 2026 as Global Brand President, she succeeded George Manas in leading OMD's global strategic vision, brand positioning, and client growth agenda across its worldwide network. Her appointment reflects OMD's confidence in internal leadership continuity and her deep institutional knowledge of the agency's operations and culture. Griffin joined OMD in 2018 and quickly ascended through senior leadership, most recently serving as President & Global COO, a role in which she oversaw the operational infrastructure, talent strategy, and cross-market coordination that underpins OMD's ability to deliver integrated media solutions at scale. Her operational expertise spans media planning, data-driven marketing, and the organizational complexity of running a global agency network serving major multinational brands. As a senior operator within the Omnicom ecosystem, Griffin is positioned at the intersection of media strategy, technology adoption, and client service — areas increasingly shaped by programmatic advertising, audience intelligence, and the evolving identity landscape. Her leadership comes at a pivotal moment for agency networks navigating AI integration, signal loss, and the demand for greater media transparency and accountability.

Last updated Jul 10, 2026 by ATDb automated enrichment