19 Largest Marketing Companies in the World

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When it comes to the marketing strategy for promoting a brand, product or service, many questions arise. New product promotions are often accompanied by the fear of making mistakes and losing customer loyalty. To avoid confirming your fears, it is best to use the services of a trusted marketing company. Of course, working with a top company will require a large marketing budget. However, the largest marketing companies in the world do not just promote products but also study the specifics of the market. Marketing research allows you to develop effective strategies and achieve your desired results. To develop promotion strategies, it is necessary to analyze consumers’ requirements and competitors’ capabilities.

Many factors dictate the spread of information about a brand on the Internet. And this is beneficial for marketing firms since the more mentions of a brand from different sources, the higher the likelihood of gaining the necessary audience trust.

To promote a brand, the largest marketing companies in the world may use the following strategies:

  • Building communication with the target audience.
  • Branding, brand formation.
  • E-mail marketing – activation and collection of leads.
  • UI/UX analysis and development of a user-friendly interface.
  • SEO – Increase targeted organic traffic.
  • PPC – Launch of Facebook, Google, Instagram, Linkedin, and TikTok ads. Company and brand goals and objectives determine the choice of social networks.
  • Video marketing – creating stories, promotional and educational videos.
  • Data analytics – Analysis of traffic needs and, accordingly, usability improvement or advertising campaigns.

Every option is beneficial – no opportunity should be neglected. The chances of getting a response from the target audience increase if you treat marketing research with due attention.

The 19 Best Marketing Companies

Up-to-date information on the largest marketing companies in the world can be found on various specialized sites. It is worth trusting the web platforms confirmed as impartial in our assessment. It will not be difficult to identify the industry leaders – we have done part of the planned work for you to offer the 19 best global marketing companies to save the time you could spend on googling “marketing firm examples” and analyzing all returned results. So, here they are, today’s marketing giants:

Accenture Interactive

The company is known far beyond the United States for its commitment to improving technology to improve service. Buyers are accompanied at all purchase stages, and marketing is performed through network offers (design, marketing, commerce). In this world’s best marketing company, the work takes place under the strict guidance of CEO Julie Sweet. Agency offices are located in major U.S. cities.

Thanks to its modern approach to tasks, the company cooperates with:

  • Generali.
  • Renown Health.
  • Avianca.
  • Microsoft.
  • Cancer Research UK.

“Iterative testing has improved the quality of customer service. In addition, the user experience improvements have been achieved through a culture of testing and optimization.” – Adidas feedback.

Deloitte Digital

Next on the list of biggest marketing companies goes Deloitte, which works with new technologies, proving that less-familiar tools are not always difficult to use. But, again, simplicity and lightness are important points that affect the agency’s popularity. Sam Roddick leads the company and is the generator of its ideas. Among the brands that have collaborated with the agency, it is worth highlighting: 

  • Pizza Hut.
  • Alaska Airlines.
  • Activision.
  • Intel.
  • Pepsi.

“Creating a new connection with customers allowed us to get the desired result: the pressure from the buyers was reduced, and the quality of work increased” – Halo Top review.


Ogilvy is another greatest marketing company. A wide range of services allowed the agency to obtain the status of the largest company in the marketing communications niche five times. Advertising and branding go hand in hand here, so achieving your goals is straightforward. Yves Baudechon is the head of the company. Collaboration with:

  • Philips.
  • Motorola.
  • KFC.
  • IBM.
  • Qualcomm.

Robert J. Bee named the agency the best network company to promote in a review.

Bluefocus Communication Group

The agency has a wide range of marketing services for top marketing businesses in its arsenal. The company has more than 6 thousand employees who work in 100 offices around the world – thanks to this, it is possible to maintain working contacts with well-known brands-clients:

  • Samsung.
  • Audi.
  • P&G.
  • Bentley.
  • Mercedes-Benz.

“The possibilities of new technologies for promotion are used to the maximum. The work on the project takes the central place, so cooperation with the agency brings results”- a response from Lenovo.


Among well known marketing firms, this renowned company combines the past and the future. The main motive for action is the phrase thrown by the first client back in 1989: “I just want to sell more cows.” Simplicity and a lot of work – these are the steps leading to success and the opportunity to partner with famous brands:

  • General Electric.
  • Mountain Dew.
  • Nestle.
  • Guinness.
  • Alka-Seltzer.

“The decision to use the specifics of the current situation in advertising has borne fruit. The results of the new campaign launch proved to be a great option at such a difficult time. We do not regret that we agreed to work together”- from AT & T’s response.


Considering key marketing corporations, we could not pass by Hakuhodo. Integrated marketing solutions are the first thing an agency uses to promote clients. The desire to improve the customer experience has increased branches in different countries. Branches in major cities work with leaders from different industries:

  • Yahoo!
  • Lotte.
  • Nissan.
  • Tiffany & Co.
  • Sony.

“The safety sensor, as a parental concern, was demonstrated in the commercial. Thanks to this, it was possible to increase the coverage and interest car owners worldwide”- a few phrases from a comment on cooperation with Toyota.


The expansion and expansion of the agency’s marketing capabilities began over 90 years ago. McCann is one of the first companies to work on modern digital technology projects. Cooperation with global brands has shown the desired result – and today, the agency’s clients include:

  • GM.
  • Aldi.
  • Cigna.
  • Nestlé.
  • Merck.

“They did everything on time, and their work was flawless. Now the content and audience engagement are excellent.” The multiple reviews about working with the agency’s team speak for themselves and prove that the agency is on the list of the best marketing organizations for good reason.

Publicis Worldwide

“Rapid market changes can be used to your advantage” – this thought allows the agency to find a source of inspiration for work on projects. To date, branches have been opened around the world, whose specialists work with popular brands:

  • Diesel.
  • Tiger Beer.
  • Renault.
  • AXA.

“Our desire to offer customers the goods they need every day and to save money” was understood from the first phrase. Great job!” – from the review of the Walmart company.


The culture of original thinking of agency specialists and a creative approach to problems helps clients develop their business. The company has 116 offices in the United States, Latin America, Asia, Europe, the Middle East, and the Pacific. Speed ​​and teamwork bring results – this is evidenced by the collaboration with renowned international brands, including:

  • American Express.
  • Diageo.
  • FOX.
  • Ford.
  • BP.

“Mindshare is a pleasure to work with – it creates a competitive marketing advantage” – from Microgrid Systems Laboratory review.


A vast network of offices around the world (7000 employees!) Cultivates a unique corporate mindset and diligently performs the assigned functions. All kinds of media sources are used for work that allows you to carry out your plans. The opportunity to see their marketing strategy in a new way was appreciated by:

  • Bose Corporation.
  • Snickers.
  • Gillette.
  • AB InBev.
  • Procter & Gamble.

“A radical change in our services, oddly enough, brought us results. Improving our reputation is the first joint achievement that deserves to be commended.”- from Uber customer testimonial.

Leo Burnett

The largest and one of the oldest (81 years of glorious history!) The network of agencies has united about 8 thousand employees under its wing. The opportunity to use communications as a central lever for managing marketing strategies develops projects. For example, a creative approach to problem-solving has been demonstrated in advertising campaigns for:

  • Coca-Cola.
  • Fiat.
  • Kellogg’s.
  • KraftHeinz.
  • McDonald’s.

“We got help using cutting-edge technology! We emphasize the importance of innovations: they allowed to increase sales”- from the response from Samsung.


Advanced developments using artificial intelligence combined with a dedicated database bring better results. Realizing the importance of customer achievements, work to improve their position in the market continues. Today, Nicolas Bidon leads projects as CEO, and the efforts of his team have been appreciated:

  • Volvo.
  • Skechers.
  • Domino’s.

“By combining multiple data sources, they were able to uncover a whole new set of audiences to raise awareness and draw attention to our cars,” according to Dave Cottrell.


One hundred fourteen offices and 90 countries are united by the desire to grow and develop in the chosen direction – the marketing company is increasing its potential. Attracting new talent has allowed MEC to become the largest agency, and under the leadership of Toby Jenner, they have been able to collaborate with:

  • Campbell & apos.
  • Colgate.
  • IKEA.
  • L’Oréal.
  • Marriott International.

“I was very impressed with how quickly they got everything set up and responded to our support requests,” from the agency’s regular client.


Marketing is based on people’s desires, and the ability to get the necessary information about the target audience’s expectations comes from working with a talented team. The agency’s priorities are better customer service and increased brand investment. Chad Engelgau is a director of a company that has become a partner of well-known names in the market:

  • Facebook.
  • Display and Video 360.
  • Crossix.
  • MediaMath.
  • LiveRamp.

“We’ve improved our understanding of consumer characterization and created marketing characters in the US and global markets. From the client’s review, we have correctly drawn up a portrait of the buyer allowed to achieve the desired results”.

Cheil Worldwide

The owner was prompted to create a new agency by the desire to unite specialists from different fields of marketing under one roof. The results of the plan’s implementation were not long in coming – the company gained fame outside its native region. The agency with CEO Jongkeun Yu boasts partnerships with:

  • Timberland.
  • KT.
  • Gmarket.
  • Vodafone.
  • Emart.

“The interest in the product will fade away if the audience is not stimulated promptly. We succeeded thanks to the company’s services”- from the client’s response.


The best proof of practical work is collaborating with many brands from the FORTUNE 500 list. The agency is on the list of the most prestigious marketing firms because it boasts branches in hundreds of countries, allowing us to appreciate the leaders’ efforts. For example, Michael Houston is the CEO of a company that works with:

  • Soundcloud.
  • Vida Mujer.
  • Finnair.
  • Volvo.
  • NFL.
  • Lidl

“We always knew what was going on in the project. Efforts to establish a connection were received with understanding. We were confident in the result – the employees communicated with us”- evaluating the work from the head of 3D Nest.


People’s understanding of brands is achieved through the correct use of media sources. Success stories and rigorous research data merged to improve customer promotion – an agency led by Erin Quill Keough was entrusted with developing marketing strategies:

  • American Express.
  • Buick.
  • Maytag.
  • AstraZeneca.
  • Taco Bell.

“In the process of cooperation, we have reduced costs. In addition, we managed to improve the quality of service and attract customers’ attention to the proposals”- from the client’s feedback.


Is it difficult to establish a connection between a brand and a customer? The marketing agency manages to create effective solutions for any task, and this is confirmed by cooperation with:

  • SAP.
  • Pfizer.
  • Remington.
  • Toyota.
  • Ruffles.

“I sent a few business acquaintances to Rapp – that’s how respectful I am to working with them” – from the client’s feedback.


One good marketing firm proves that digital digital marketing is a great way to combine innovation and drive it to promote brands. The main goal is to improve the customer experience and the strategies used. Jean Lin is the CEO who managed the company while working with:

  • Heineken.
  • Guinness.
  • Comedy Central.
  • Cancer Treatment Centers of America.
  • Huawei.

“The creation of a dashboard for dealerships to organize events, personal invitations and track the best has brought the Porsche brand together on one platform,” from the customer response.

Thereby, we’ve considered the top online advertising companies in the world whose performance impresses.


The world’s largest marketing companies offer affordable brand development opportunities. First, the chosen goal is achieved by analyzing the data obtained and determining the correct approach for the client. Then, using all the clients’ competitive advantages, marketing agencies get the desired result and break into the top of successful marketing firms.

Article by:
CEO Andrew Chornyy

CEO Plerdy — expert in SEO&CRO with over 11 years of experience.

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