Discover the Biggest Marketing Agencies in the World

Are you curious to know who the biggest marketing companies in the world are? You may have heard of some of the most famous agencies like BBDO, Havas or Grey, but would it surprise you if I told you that those agencies aren't even in the top 10? The landscape of global agencies has become increasingly complex and confusing over the past decade. While huge networks of agencies and portfolio companies are at the forefront, there has been a convergence of consulting firms and technology giants that have set out to compete with internal agencies. All of this continues to blur the lines between what is considered an agency and who is best suited to support your digital, advertising and marketing initiatives worldwide. Engine is a marketing company based on 14 agencies that work across the spectrum of marketing disciplines. They have 30 offices around the world, from New York to Shanghai, Los Angeles, Sydney and more.

This new generation of marketing agencies has worked with clients such as Unilever, Nestle, American Express, Disney, Xbox and more.

Universal McCann

Universal McCann is a creative media agency that has a client list that includes Johnson & Johnson, Coca-Cola, Fiat Chrysler Automobiles, The Hershey Company, CVS Health, ExxonMobil, BMW and Sony. The agency is part of the Interpublic network and is a member of the IPG Mediabrands group with Initiative, Magna, Mediabrands Audience Platform and three other agencies. UM operates in more than 100 countries and employs more than 4,800 people.

Mc Group

Mc Group is the largest independent public relations and advertising agency in Germany and Europe. They have worked with big brands such as Visa, Vodafone, Gazprom, CNN and Real Madrid, to name a few.

With more than 80 offices around the world, the German communication agency is the only agency that is present in all 28 EU member states and in economic centers around the world.

Saatchi & Saatchi

Saatchi & Saatchi, which began as an emerging advertising agency in the 1970s in London, has grown to become a global communication agency with 114 offices in 67 countries. While still the smallest of the three major advertising agencies in the Publicis Groupe network, the agency continues to work with six of the world's top 10 advertisers.


Edelman is the world's largest independent public relations agency that helped define modern public relations. The agency continues to push the boundaries of what public relations can do and partners with 2000 of the world's leading companies, helping them to evolve, promote and protect their brand and reputation. Edelman has 65 offices and 5000 employees.

Cheil Worldwide

South Korea's largest advertising agency, Cheil Worldwide, is more than three times larger in revenue than its closest domestic rival.

The agency has 53 offices in 43 countries and 6,200 employees worldwide. Owned by the Samsung Group, Cheil's list of major clients includes Adidas, GE, Coca-Cola, Lego, Microsoft, Shell and more.


Zenith, part of Publicis Media, is the ROI agency with 5000 specialists in 95 markets. The agency specializes in communications planning, media optimizing value, technology and data analysis. Zenith has worked with companies such as Aviva, 21st Century Fox, Mercedes, BMW and more.


Xaxis is The Outcome Media Company that combines advanced artificial intelligence with data and proven experience to optimize investments in programmatic media.

With 1,800 programming experts, Xaxis has more than 3,000 customers in 47 markets in North America, Europe, Asia-Pacific, Latin America and the Middle East. Xaxis is a member of WPP's GroupM.


Founded in 1923, Y&R is a world leader in marketing communications within the WPP network. The agency operates as a global boutique agency connecting in-depth information about local businesses' needs with consumers united by a global team. Y&R's client list includes RockEd Dell Xerox Burger King and Movistar.


Carat is a comprehensive media buying and planning agency that seeks to redefine media for today's most innovative clients.

The agency consistently ranks first in RECMA's global qualitative assessment ranking and serves clients in 150 countries with more than 10 000 talented employees. Carat is also the largest agency in the Dentsu Aegis network in terms of annual revenues.

Walter Thompson

Walter Thompson is the world's best-known marketing agency and has been creating creative solutions for creating lasting brands for more than 150 years. JWT a true global agency has more than 200 offices in more than 90 countries and nearly 10 000 employees. The WPP agency is the official agency of Church's Chicken US Marine Corps Subway and KPMG to name a few.


Mediacom is one of the world's leading media companies with 7 000 employees in 125 offices in 100 countries around the world.

Originally they were Grey's media division but they broke up to focus on full-time media work with companies such as Mars P&G AB InBev GSK and Sony. Mediacom is part of GroupM and is a member of WPP.


Created in 1997 Mindshare is one of the best media planning and buying agencies in the world. The agency is part of WPP's GroupM and has 116 offices in 86 countries in North America Latin America Europe Middle East Asia Mindshare acts as a registered media agency for Pandora Jewelry TJX Tyson Foods.


In 1949 Bill Bernbach Ned Doyle and Maxwell Dane founded advertising giant DDB DDB is one of most prestigious advertising agencies regularly receiving awards While keeping lower profile than other major agencies DDB continues to work with major brands from Heineken Ubisoft Volkswagen while acting as record agency for McDonald's Jeep more.


Dentsu Japan's largest advertising agency offers wide range services eight business domains including marketing digital creative spheres promotions media content public relations global business Dentsu was founded 1901 works global brands such Facebook.

PwC Digital Services

PwC Digital Services Hallandale Beach FL provides digital transformation services help organizations create customer experiences drive growth increase efficiency reduce costs PwC Digital Services works clients such Microsoft IBM Oracle HPE many others.

Patricia Watson
Patricia Watson

Friendly social media specialist. Professional beer fanatic. Passionate explorer. Social media scholar. Typical internet nerd. Travel nerd.

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