Insights & Strategy
Who are the 5 Largest PR Firms in the World?
With such high competition in the public relations field, it often becomes hard to say just who does what best.
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Fleishman Hillard
Insights & Strategy
FleishmanHillard: PR Agency Profile, History, and Industry Coverage
FleishmanHillard is one of the largest global communications agencies, founded 1946 in St. Louis by Alfred Fleishman and Robert E. Hillard. Owned by Omnicom since 1997. President and CEO J.J. Carter; Americas CEO Jillian Janaczek. HQ relocated to Clayton, MO in 2024. Absorbed Porter Novelli as dedicated brand February 2026.