What are the four largest advertising companies in the world?

1, Omnikon-the world's largest advertising communication group, the global leader in advertising, marketing and corporate communication. It is recognized as the most creative company in the world. In 2005, Omnikon's global revenue increased by 7.5% compared with 2004, reaching 10485438+0 billion USD. The company has more than 60,000 professional technicians all over the world.

Interpublic-the second largest advertising and communication group in the United States. Interpublic is a global leader in commercial communication, the second largest advertising and communication group in the United States and the fourth largest in the world. Business scope includes advertising, direct marketing, market research, public relations, health care consultation, conferences and activities, media professional services, sports marketing, promotion, corporate image strategy, etc.

3.WPP- the largest advertising and communication group in Britain. WPP Group is the largest communication group in the world. Headquartered in London, England, it mainly serves local, multinational and global customers, providing advertising, media investment management, information consultation, public affairs and public relations, brand and corporate image building, medical and pharmaceutical professional communication and other services.

4. Publicis Group-the largest advertising and communication group in France. Publicis has three global agents and two major media companies (Power Media and Star Media). Publicis Group has become the fourth largest transnational communication service group in the world.