Ellen Griffin

Ellen Griffin is Global Brand President of OMD, the world's largest media agency network, where she leads the agency's global strategy, capabilities, and client solutions across more than 100 markets. A transformational leader with deep expertise in marketing, media, and business growth, she partners with many of the world's leading brands to help them navigate an increasingly complex landscape shaped by AI, commerce, data, and evolving consumer behavior. 

Since joining Omnicom Media Group in 2009, Ellen has held a series of leadership roles across the organization, including Global Chief Client Solutions Officer and OMD's first Global Chief Operating Officer, before being named Global Brand President. Throughout her career, she has helped shape the agency's operating model, accelerate innovation, and lead transformational work for some of the world's most recognized brands, including PepsiCo, McDonald's, and Clorox. 

Ellen is passionate about developing the next generation of industry leaders and advancing the future of marketing through collaboration, innovation, and inclusive leadership.