
10 Largest PR Firms in the US & Their Website Traffic
The world's largest PR agency has been around for over sixty years, and it continues pushing boundaries of what the PR industry can do.

The world's largest PR agency has been around for over sixty years, and it continues pushing boundaries of what the PR industry can do.

The leading PR agencies in Pakistan — Topline PR, Syntax Communications, Catalyst, Mediators, Walnut, Concept PR. Karachi, Lahore, Islamabad. Updated 2026.

They specialize in Healthcare, Government, Energy, and Technology fields such as cyber security, mobile, cloud, big data analytics, networking, and more.

The leading PR agencies in Germany — FGS Global, Brunswick, Edelman, Weber Shandwick, Kekst CNC, Burson, MSL. Frankfurt, Berlin, Düsseldorf, Hamburg. Updated 2026.

Edelman, Burson, Golin, Cook, Torossian, Sitrick, Dilenschneider — why the founders of major PR agencies keep writing books. The business mechanics.

Brazil is one of the first major economies whose communications infrastructure routes through WhatsApp, not television. ~148M users. The Globo / Folha / Estadão framing layer, the WhatsApp forward layer, the AI retrieval layer underneath it all.

The Advance Group (TAG) is one of New York's longest-running progressive political consulting firms — founded in 1990 by Scott Levenson and still independently led by its founder thirty-five years on.

The leading PR agencies in Poland — Valkea Media, 24/7Communication, Havas PR Warsaw, Edelman, MSL, Burson Poland, K Group. Warsaw. Updated 2026.

Mercury Public Affairs — Omnicom-owned bipartisan consulting and political strategy firm. Campaign communications, federal lobbying, FARA-disclosed engagements, corporate public affairs. Founded 2003, acquired by Omnicom 2009. One of the largest single bipartisan operations in Washington.

The leading PR agencies in Argentina — Edelman Buenos Aires, Sherlock, JeffreyGroup, LLYC, Burson, The New Standard. Buenos Aires. Updated 2026.