Top 12 Management Consulting Companies In The World

A consulting firm is a business that provides services by assembling a group of experts or consultants to provide professional advice to an individual or organization. Management consulting companies may be found in every part of the globe, serving almost any industrial specialty. Various consulting firms provide excellent customer service and professional experience.

The following is a list of the top management consulting companies evaluated for their success in several categories.

McKinsey & Co.

McKinsey & Company is the most prestigious management consulting company in the world. It was started in 1926 by James O McKinsey and Marvin Bower.

The company has 127 offices worldwide and is headquartered in New York City. It has a network of over 27,000 employees, making it a billion-dollar company with more than $10 billion in revenue. It has a strict work and ethics culture, with a highly driven and competitive workforce. The company values traits such as loyalty, integrity, and dynamism.

Boston Consulting Group

Boston Consulting Group is the second-largest consulting firm in terms of revenue and consistently ranks among the most respected global management consulting companies. The firm’s diverse, worldwide teams deliver significant industry and functional experience to businesses, assisting them in expanding, establishing long-term competitive advantage, and making a good social impact.

It was initially started by Bruce Henderson. The company has more than 90 offices worldwide and employs more than 25,000 people. It has over $11 billion in annual revenue.

Bain & Company

Bain and Company is among the top 3 management consulting firms in the world, after McKinsey and BCG. It was established in 1973, and its headquarters are in Boston, Massachusetts. The company was founded by William W. Bain and Patrick F. as an incorporated partnership. The corporation saw tremendous expansion in the early 1980s and generated a revenue of nearly $6 billion in 2021.

The company has a global network of 59 locations and 8,000 employees.

Accenture Strategy

Accenture, founded in the 1950s by Arthur Andersen, was one of the first companies to introduce computers to General Electric. With $35 billion in yearly revenue and 459,500 workers, it is highly selective among its clients and continues to place a strong emphasis on technology.

Accenture Strategy is the Company’s C-suite consulting arm. Accenture’s services are around 95 percent of the Fortune Global 100. It has a significant presence in the United States, India, and the Philippines.


Deloitte is a multinational provider of audit, tax, financial, and consulting services. William Welch Deloitte established the Company in London in 1845, and it expanded its operations to New York in 1880. The Company is one of the Big Four accounting firms.

 Corporate strategy, marketing, sales strategy, mergers and acquisitions, and innovation are examples of its services. Manufacturing operations, including supply chain, sector-specific service operations, infrastructure operations, outsourcing advisory and shared services, and financial management, are also examples.

Ernst & Young

Ernst & Young was founded in 1989 and is headquartered in London, United Kingdom. It is now one of the Big Four accounting companies. It employs 260,000 people and has a total yearly revenue of $34.8 billion.  

They are well recognized for their auditing, tax, business risk, technology and security risk, and human capital services. They assist organizations in transforming through four service lines: assurance, consultation, strategy, and transactions.

Oliver Wyman

Oliver Wyman is an international management consulting firm specializing in banking and finance. It was founded in 1984 and is headquartered in New York City, U.S.A. The current form of the business took effect in May 2007, when Oliver Wyman joined Mercer Management Consulting and Mercer Delta to establish Oliver Wyman.

With 4,500 people in 27 countries, the Company has more than 60 offices in Europe, the Americas, and the Asia Pacific. Oliver Wyman was included in Fortune Magazine’s list of the “100 Best Workplaces for Millennials” in 2016. It was named one of the 100 Best Companies for Working Mothers list.


KPMG is a worldwide network of professional services firms. It belongs to one of the Big Four accounting companies. KPMG is structured as a network of firms that provide services to clients in the areas of strategy and operation, technology enablement, and transformation.

It has been well-known in China and Hong Kong for years of rapid expansion. It is also known for the depth of its knowledge in outsourcing advice. This consulting company has been named one of the best risk management leaders.

Booz Allen Hamilton

Booz Allen Hamilton is an American management and information technology consulting company. It is headquartered in Virginia, in Greater Washington. Booz Allen Hamilton is typically regarded as a reliable employer in the top third of consulting businesses. It was founded in 1914 and boasted some of the most advanced technological capabilities.

It has over $5.48 billion yearly revenue and more than 80 offices across the globe. Its engineering services portfolio is the strongest among any consulting company, and it is well known for its nonprofit and public sector business lines.

Roland Berger

Roland Berger, founded in 1957, has 50 offices in 36 countries and 2,400 consultants. Its private equity expertise has elevated it to the forefront of emerging European and Asian markets, notably China. Roland Berger has been characterized as a “tier 2” company at the top level.

The Big Four’s acquisition efforts were prompted by the consultancy firm’s thriving Company. It is well-known for its strategy, corporate development, and corporate finance consulting services in the automotive, capital goods, and energy industries.


Gartner Inc., an international public firm, was launched by Gideon Gartner in 1979. Gartner is one of the world’s most trusted and famous research and consultancy companies. It is extending its services to provide professional advice and tools to global leaders in I.T., Finance, H.R., Customer Service, Support, Legal and Compliance, Marketing, Sales, and Supply Chain activities.

Its headquarter is in Connecticut, United States. Gartner, which thrives on the cutting edge of innovation, is a place for the tech-literate and the business-oriented.

L.E.K. Consulting

L.E.K. Consulting is a global management consulting company specializing in corporate strategy, mergers & acquisitions, and operations. Its headquarters are in London, UK, with another in Boston, Massachusetts, overseeing the U.S. equivalent. L.E.K. was created in 1983 by three Bain & Company partners: James Lawrence, Iain Evans, and Richard Koch.

It employs 1,200 people across 19 offices in 19 countries. L.E.K. Consulting was recognized as the ‘Strategic Consultants of the Year’ at the 2015 Health Investor Awards.


Management consulting services are valued at more than $130 billion globally, representing slightly more than half of the overall global consulting market.

The majority of market participants are either specialized management consulting companies or companies with a business unit that provides management consulting services.

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