Top 100 Consulting Firms in The World: The Complete List

When it comes to the world's top consulting firms, there are definitely some strong contenders.

Here we have listed the top 100 management, strategy and technology consulting firms, in alphabetical order within their general and specialised fields.

Management Consultants

1. Accelerating Experience

An award-winning business performance and leadership consultancy.

2. AccountAbility

An independent, global, not-for-profit organisation promoting sustainable business practices and corporate responsibility.

3. A.T. Kearney

A US-based global management consulting firm that focuses on strategic and operational CEO-agenda issues, operating from offices in more than 40 countries.

4. Bain & Company

One of the ‘Big Three’ management consultancies, based in Boston, US. Seen as one of the most prestigious employers in the industry, it offers advice to public, private and not-for-profit organisations.

5. The Berkeley Partnership

An independent management consultancy based in London and New York. It works with many household names globally to develop strategies and transform their businesses.

6. CIL Management Consultants

Provides evidence-based advice to assist clients to grow their businesses, manage risk and make better investment decisions. CIL covers multiple business sectors.

7. CMG (Change Management Group)

Specialised change management consultancy focusing on retail and consumer goods. Offers IT implementation support, consulting experience and established methodologies.

8. Egremont Group

A management consultancy specialising in fast, flexible and lasting business transformation.

9. Enterprise Learning

A specialist consultancy providing risk management and organisational change solutions to financial companies, helping them implement new initiatives and improve performance.

10. ERM (Environmental Resources Management)

Provides environmental, health, safety, risk and social consulting services as well as sustainability-related services.

11. Gallup

US-based analytics and advisory company based in Washington. Known for its public opinion polls, and also specialises in providing analytics and management consulting to organisations globally.

12. Gardiner & Theobald

Offers project-management consultancy services to companies in financial services, retail, transportation, etc.

13. Hitachi Consulting

A global management and technology consulting firm with headquarters in Dallas, Texas.

14. IDEO

An international design and consulting firm based in California. Designs products, services, environments and digital experiences.

15. JMAN Consulting

A technology-focused management consultancy. Recognised by Financial Times as one of the UK’s leading management consultancies in 2018.

16. LeighFisher

A global management consulting firm with over 70 years of expertise in infrastructure advisory and consulting services, specialising in transport.

17. McKinsey & Company

A management consulting firm based in the US, it conducts analysis to evaluate management decisions across the public and private sectors, and has worked with 80% of the world's largest corporations. McKinsey is the largest of the 'Big Three' consultancies.

18. PA Consulting Group

PA Consulting Group specialises in management consulting, technology and innovation. It has clients in both the private and public sector.

19. Quantum Group

An international management consulting firm advising clients on business strategy to help them build competitive advantage and lasting results.

20. Triangle Management Services

A UK company that offers research consultancy and management services. Also provides recruitment, market research, conferences, and mergers and acquisitions advisory services.

21. Virtrium

Founded in 2006; provides consulting services based on development and live product experience.

22. Watts Group

Provides property and construction consulting services to various commercial and public sector clients in Europe.

Strategic Consultants

23. Accenture

A global management consulting and professional services firm that provides strategy, consulting, digital, technology and operations services, with reported net revenues of $40 billion approx.

24. Baxendale

A consultancy dedicated to helping companies find and implement core business strategies.

25. BCG (Boston Consulting Group)

With more than 90 offices in 50 countries, BCG advises clients in management decisions across the private and public sectors and is one of the ‘Big Three’ strategy consulting firms known as MBB.

26. Consulting People

A niche consultancy with vast experience of transforming businesses through developing people with coaching, facilitation and consultation.

27. Curzon & Company

An award-winning digital, strategy and transformation consultancy, specialising in helping organisations to achieve sustainable performance in all business areas.

28. Decision Technology

A trusted advisor to some of the world’s largest organisations, delivering financial analysis and business advice alongside field research and customer insights.

29. Forrester Consulting

Offers a variety of services including syndicated research on technology as it relates to business; quantitative market research on consumer technology adoption; and enterprise IT spending.

30. The GAP Partnership

A global negotiation consultancy specialising in the planning, strategy and execution of commercial negotiation, and the development and training of negotiation skills.

31. GGI (Good Governance Institute)

One of the top consultancies operating in the private and public sectors; leads national studies and undertakes other commissioned work internationally.

32. Human Innovation

Specialises in designing new business models, services, products and experiences.

33. IBM Global Business Services

Made up of business, technology and industry experts who apply advanced technology to help clients design, build and run businesses.

34. ICF International

A US-based global consulting and technology services company with more than 65 offices around the globe. They provide strategic planning, research and program management.

35. Interbrand

Interbrand, a division of Omnicom, is a brand consultancy specialising in areas such as brand strategy, brand analytics, brand valuation and corporate design.

36. io oil & gas consulting

An upstream oil and gas consultancy that delivers projects by focusing on greater certainty and higher decision quality.

37. Javelin Group

Javelin Group, part of Accenture Strategy, is an award-winning firm that provides strategy consulting and digital transformation services to the world’s leading retailers and consumer brands.

38. L.E.K. Consulting

A management consulting firm founded by three partners from Bain & Company. It specialises in corporate strategy, operations, and M&A.

39. LiveStrategy

LiveStrategy a new consultancy offering accessible and affordable strategy to mid-size organisations.

40. Managementors

A UK-based independent business operations consultancy. Implements change and performance solutions that create real business advantage.

41. Market Gravity

A proposition design consultancy. Helps the world's leading companies create and launch innovative products and services.

42. Medius

An independent regulatory consultancy operating in the financial services market.

43. Monitor Deloitte

Specialises in providing strategy consultation services to major organisations and governments.

44. Moorhouse Consulting

Offers consulting services to help organisations with business transformation.

45. OC&C Strategy Consultants

A management consulting firm that provides strategic advice to senior management in large corporations and organisations. With over 80 partners, they are one of the top European-founded strategy firms.

46. OEE Consulting

A specialist in delivering business transformation, organisational change strategies and operations training.

47. Ogilvy Consulting

A strategic consulting group for brands that want to transform, innovate and grow their businesses.

48. RedQuadrant

An efficiency and transformation consultancy for the public sector. Helps clients by producing robust strategies and delivering effective transformations.

49. Strativity

Provides customer experience design, cultural transformation and strategic planning solutions, as well as research and measurement services.

IT & Social Media

50. Actica

A technical and management consultancy dedicated to ensuring that customers make the best use of emerging ICT in achieving their business objectives.

51. Alchemmy

A London-based management consultant specialising in the delivery of change management, programme management and IT company-wide transformations.

52. Alpha FMC

Offers services in mergers and acquisitions consulting, operations and outsourcing, front office IT, enterprise IT and reporting.

53. Altran Consulting

A French technology and innovation consultancy, with strategy and management consulting making up the rest of the business.

54. Analysys Mason

Provides advisory services for the telecoms, media and technology sectors including cable companies, financial institutions, content providers, government, etc.

55. ASE Consulting

An advisory firm offering support in IT strategy & innovation, enterprise architecture, procurement, commercial contracts and IT, data security and compliance.

56. BAE Systems Applied Intelligence

BAE helps nations, governments and businesses around the world defend themselves against cyber crime, comply with regulations and transform their operations.

57. BMC Consulting Services

Assists clients with everything from planning and building a first product implementation through to more complex, multi-product IT transformations.

58. Capgemini Invent (formerly Capgemini Consulting)

Capgemini Invent is the management consulting business line of the Capgemini Group, focusing on digital innovation and transformation.

59. Capita

The largest business process outsourcing and professional services company in the UK, with clients in central government, local government and the private sector.

60. CGI Group

A Canadian global information technology consultancy firm, specialising in systems integration, outsourcing and solutions.

61. Citihub Consulting

A global, independent IT advisory firm with expertise in digital enterprise, Fintech, Regtech and InfoSec.

62. Cyrene Strategy Consulting

Cyrene provides consulting in various areas, from IT strategy to global business development.

63. Deloitte Digital

Deloitte Digital offers strategic solutions for mobile, digital content and design, digital ERP and communication.

64. Fujitsu Business Consulting Services

A Japanese multinational IT equipment and services company and the world's fourth-largest IT services provider by revenue.

65. NCC Group

An information assurance firm based in Manchester, UK. Service areas cover software escrow and verification, cybersecurity consulting and managed services.

66. Netcel

Provides website design services and solutions including e-commerce sites, extranets, intranets, web applications, digital marketing, hosting and support services.

67. Starcount

A data science company based in the UK, Starcount specialises in technology and social media insight analysis.

Finance Consulting

68. Aon Hewitt

A US management consulting organisation with 500 offices in 120 countries. It provides consulting, outsourcing and reinsurance brokerage services.

69. BCS Consulting

A management consultancy focused solely on the financial services sector.

70. Capco

First known as The Capital Markets Company N.V., Capco is a global technology and business consultancy dedicated to the financial services industry.

71. Catalyst

Specialises exclusively in consulting to financial services companies.

72. Deloitte Consulting

Deloitte is one of the ‘Big Four’ accounting organisations and the largest professional services network in the world. It offers financial advice and consulting in the areas of audit, tax and enterprise risk.

73. DMW Group

A strategic IT partner working internationally for public and private sector organisations.

74. EY

EY (formerly Ernst & Young) is one of the largest accounting firms in the world and one of the ‘Big Four’. Based in the UK, EY provides advisory services and consultancy in assurance, tax and transactions advisory services.

75. FTI Consulting

Dedicated to helping organisations manage change, mitigate risk and resolve disputes.

76. KPMG Advisory

One of the ‘Big Four’ auditors, along with Deloitte, EY and PwC. Operating globally from the Netherlands to provide financial audit, tax and advisory services.

77. Oliver Wyman

Oliver Wyman is an international management consulting firm with a large focus on banking and financial services.

78. PwC Consulting

One of the ‘Big Four’ auditors, PwC is a multinational professional services network and the second-largest professional services firm in the world after Deloitte.

79. RSM UK

A global provider of audit, tax and consulting services to middle-market leaders. It is the sixth-largest business advisory firm globally.

Consulting in Health

80. Apex Healthcare Consulting

An EU-based consultancy that provides strategic business evaluations and analysis for the healthcare sector in Europe and the US.

81. Ashfield Healthcare Communications

A network of multi-award-winning agencies supporting medical affairs and brand commercialisation.

82. Attain

The largest independent healthcare delivery organisation in the UK, with expertise in planning, design and delivery of health and social care.

83. Candesic

Provides management consultancy and commercial due diligence services to private and public sector organisations like the NHS.

84. Cogentia Healthcare Consulting

A healthcare consulting company based in Cambridge in the UK. Provides market access skills, knowledge and expertise to the pharmaceutical and biotech industries.

85. GE Healthcare Partners

A consultancy firm covering all aspects of healthcare management consultancy, analytics, technology, commercial, leadership and governance.

86. Philips Healthcare Consulting

Offers healthcare consulting in the areas of performance improvement, patient experience, strategic design and emergency services.

Consulting in Food & Environment

87. 3Keel

An Oxford-based firm of sustainability advisors specialised in working with food systems, supply chains and landscapes.

88. Freshwater

The Freshwater Consulting Group is a specialist river and wetland consultancy.

89. SustainAbility

An award-winning international strategic consultancy and think-tank. SustainAbility inspires and enables businesses to lead the way to a sustainable economy.

90. Talik & Co.

An international organisation development consultancy helping to develop organisations that enable people, nature and society to flourish.

91. Wood Mackenzie

A global energy, chemicals and renewables research and consultancy group supplying comprehensive data, written analysis and consultancy advice.

Media & Entertainment

92. Oliver & Ohlbaum Associates

O&O advises on the opportunities and challenges facing the global media, entertainment, information and sports sectors.

93. QuantumBlack

Facilitates decision consulting and mapping, data and option analytics, and information sourcing services. Caters to the finance, media, life sciences and sports sectors.

94. Wavestone

Offers management consulting services in the areas of finance, telecom, media and entertainment, consumer goods and retail, manufacturing and many other sectors.

Procurement Consulting

95. 4C Associates

4C Associates Ltd. provides procurement consultancy and managed services.

96. A&C (Akeso & Company)

Specialising in the field of healthcare and life sciences, A&C offers consulting services in procurement, supply chain and healthcare operations.

97. Genpact

Combines deep procurement domain expertise with business process management services.

98. GEP

Provides clients with a flexible set of procurement outsourcing options customized to meet their specific needs.

99. Pcura

A leading provider of procurement outsourcing services on- or off-shore.

100. Wipro

Specialising in domains sourcing, procurement, master data management and platform enablement.