Global ad agencies market to hit $348.4 billion; WPP, Omnicom Group, others lead growth

By Zion Rufus

The global advertising agencies market is projected to hit $348.4 billion before the end of 2021 at a compound annual growth rate (CAGR) of 9.7%, up from the $317.63 billion mark in 2020.

The ad agencies market recorded a global rebound in the second half of 2020 as a result of the Covid pandemic which acclerated the leveraging and transformation of digital offerings across economies as well as an increase in ad spend across industries. The trend is also expected to continually drive the demand for ad agencies.

The advertising agencies market consists of the sales of advertising services and related goods by entities (organizations, sole traders and partnerships) that plan, develop, create and manage advertisement and promotional activities in newspapers, radio, television, websites and social media sites. The advertising agencies market is segmented into TV, digital, print, OOH (Out-of-Home Advertising), radio and other advertising services.

Championing this growth by revenue  are WPP, Omnicom, and Publicis Groupe  as they maintain their positions as the world’s leading advertising companies in 2021 according to reports shared by market research company, Insider Intelligence. Renowned as the ‘Big five’, WPP Plc, Omnicom Group Inc.,  Publicis Groupe, IPG, and Dentsu have been the major players in the advertising agencies market.


WPP – London, $16.9 billion

Creative transformation Comapny, WPP sits at no.1 on the list of 2021 top 5 ad agencies. WPP is a British multinational communications, advertising, public relations, technology, and commerce holding company headquartered in London, England. WPP plc owns many companies, which includes advertising, public relations, media, and market research networks such as AKQA, BCW, Essence Global, Finsbury, Grey, Hill+Knowlton Strategies, Mindshare, Ogilvy, Wavemaker, Wunderman Thompson, and VMLY&R.

Omnicom Group – New York, $15 billion

Omnicom Group Inc. is an American global media, marketing and corporate communications holding company, headquartered in New York City. Omnicom’s branded networks and specialty firms provide services in four disciplines: advertising, customer relationship management, public relations and specialty services. BBDO Worldwide, DDB Worldwide, DAS Group of Companies, Omnicom Media Group, TBWA Worldwide

Publicis Groupe – Paris, $12.3 billion

Publicis Groupe is a French multinational advertising and public relations company. One of the oldest and largest marketing and communications companies in the world by revenue, it is headquartered in Paris. Publicis Groupe is a parent company to many other big names such as Leo Burnett Worldwide, Saatchi & Saatchi, Publicis Media, Starcom, Zenith, Frubis, Publicis Sapient, Spark Foundry, and many more.

Interpublic Group of Cos. – New York, $10.2 billion

The Interpublic Group of Companies, Inc. is an American publicly traded advertising company. The company consists of major networks such as FCB, IPG Mediabrands, McCann Worldgroup, and MullenLowe Group.

Dentsu Inc. – Minato City, Tokyo, $9.6 billion

Dentsu Inc. is a Japanese international advertising and public relations joint stock company headquartered in Tokyo. Dentsu is currently the largest advertising agency and the fifth largest advertising agency network in the world in terms of worldwide revenues. Some of their network subsidiaries include Fetch, 360i, Mcgarrybowen, DentsuX, Grip Limited, Gravity, and more.



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