Consulting firms with the best track record

Which consulting firms have the best track record of delivering projects? Meet the world's top consulting firms that stand out for their client work.

Across all corners of the world, consulting firms deliver projects to their clients, across every conceivable area of expertise and within any industry. Projects can span all types of consultancy services, from research and strategic work to project delivery, digital transformation and supporting the implementation of change initiatives. 

Consultancy.org's database monitors consulting projects delivered in 100+ countries, across all major sectors including automotive, aviation, construction, energy, financial services, government and the public sector, healthcare, professional services, retail, technology and telecom. Based on our unique insights, here are the top consulting firms in the world based on their best track record.

The leading consulting firms for client track record:

1.
Deloitte
“Deloitte” is the brand under which tens of thousands of dedicated professionals in independent firms throughout the world collaborate to provide audit, consulting, financial advisory, risk managemen...
2.
McKinsey & Company
McKinsey & Company is a global management consulting firm. We are the trusted advisor to the world's leading businesses, governments, and institutions. We strive for world-shaping client impact We wo...
3.
Boston Consulting Group
The Boston Consulting Group is a global management consulting firm and the world's leading advisor on business strategy. We partner with clients from the private, public, and not-for-profit sectors i...
4.
KPMG
KPMG international operates as a network of member firms offering audit, tax and advisory services. We work closely with our clients, helping them to mitigate risks and grasp opportunities. Member fi...
5.
EY
At EY, we are committed to building a better working world — with increased trust and confidence in business, sustainable growth, development of talent in all its forms, and greater collaboration. We...
6.
Bain & Company
Bain & Company is one of the world's leading management consulting firms. We work with top executives to help them make better decisions, convert those decisions to actions, and deliver the sustainab...
7.
Alvarez & Marsal
Companies, investors and government entities around the world turn to Alvarez & Marsal (A&M) for leadership, action and results. Privately held since its founding in 1983, A&M is a leading global pro...
8.
PA Consulting
PA Consulting is an internationally leading management consultancy with a large variety of services in areas such as Strategy, Digital Business Design, Agile, Business Intelligence & Analytics and IT...
9.
BearingPoint
BearingPoint is an independent management and technology consultancy with European roots and a global reach. The company operates in three business units: Consulting, Products, and Capital. Consultin...
10.
OC&C Strategy Consultants
OC&C Strategy Consultants is a global strategy boutique. We have more than 30 years of experience at unpicking the most complex business challenges with simple, uncommon sense. We are strategy specia...
11.
Mazars
Mazars specializes in accountancy, tax advice and consultancy. Based on knowledge in these fields, we work for (international) companies, organizations in the public sector, SME entrepreneurs and wea...
12.
Coeus Consulting
Coeus Consulting, a Wavestone company, is an independent award-winning IT advisory that empowers technology, business and procurement leaders to deliver strategic change. We help leadership teams del...
13.
GEP
GEP® delivers transformative supply chain solutions that help global enterprises become more agile and resilient, operate more efficiently and effectively, gain competitive advantage, boost profitabi...
14.
Analysys Mason
Global leaders in TMT management consulting Analysys Mason is the world's leading management consultancy focused on telecoms, media and technology (TMT). We give clarity and confidence in answering o...
15.
CIL Management Consultants
CIL is an international management consultancy with offices in the US and Europe. We help businesses grow, build value and invest wisely. We are rigorous in our approach, confident in our conclusions...
16.
Nextcontinent
Our “citizens” are independent key players in their respective markets, sharing a unique entrepreneurial vision. Trust is the key word they share with their clients through this worldwide citizenship...
17.
Nous Group
Nous Group is an international management consultancy with over 600 people working across Australia, New Zealand, the United Kingdom, Ireland and Canada. With our broad consulting capability, we can ...
18.
Cordence Worldwide
Cordence Worldwide is a major global management consulting partnership made up of independent Member Firms, each of which is a leader in the regions it serves. By maintaining their independence, each...
19.
dss+
With over 900 professionals in 40 countries, we are a world-class operations management consulting firm with a purpose of saving lives and creating a sustainable future. From our solid legacy as DuPo...
20.
R/GA
Founded in 1977, the agency has been a pioneer at the intersection of technology, design, and marketing with work spanning web, mobile, social, retail, product innovation, brand development and busin...
21.
L.E.K. Consulting
We’re L.E.K. Consulting, a global strategy consultancy working with business leaders to seize competitive advantage and amplify growth. Our insights are catalysts that reshape the trajectory of our c...
22.
Marktlink
We are Marktlink – an involved M&A specialist with an independent, discreet, and no-nonsense working method. Since 1996, we support entrepreneurs in company acquisitions and mergers, using our in-dep...
23.
Avalon Consulting
Avalon Consulting is one of India’s leading consulting firms with 28 years of excellence in strategy and management Consulting. Avalon serves clients across India, the Middle East, China and South Ea...
24.
BJSS
Your strategic technology partner BJSS is the leading technology and engineering consultancy for business. Trusted by our clients, we collaborate to deliver complex, innovative technology, engineerin...
25.
Capco
Capco is a global management consultancy with a focus in financial services including banking and payments, capital markets, and wealth and asset management, plus a dedicated energy division. We comb...
26.
Cedar Management Consulting
Cedar is a global strategy consulting, research, and analytics firm with a 35-year track record and clients across multiple industry sectors. Since 1985, our teams have assisted clients in areas of s...
27.
Sia Partners
Sia Partners is an international management consulting firm focused on corporate and operational strategy, with expertise in all aspects of the value chain and its supporting functions. Sia Partners ...
28.
Curzon Consulting
We are an award-winning management consultancy who deliver tangible and enduring results for our clients. The Financial Times and Statista named Curzon Consulting as one of the UK’s Leading Managemen...
29.
Zanders
We are an independent firm with a track record of innovation and success across the total spectrum of treasury, risk and finance. Our Business Values are the ingrained principles of the company and o...
30.
Berenschot
We assist organizations in the public sector and business around the world in solving administrative and social issues, realizing new strategies, improving performance and building and developing hum...
31.
convedo
Founded in 2009, convedo is an IT consultancy firm with headquarters in Canary Wharf, London. convedo designs, developers, delivers, and supports business and technology solutions using best-of-breed...
32.
Dogma Alares
Management Consulting is dying! Long live next-generation consultants. Fortunes are gained and lost faster than ever. Consumers are adapting new products, services and technologies fast. The best sol...
33.
Emerton
Emerton is one of the few global, high-standard strategy consulting firms. Our team is mobilized to bring speed to a few clients in each of the sectors we cover, both in their strategic decision-maki...
34.
Eurogroup Consulting France
Eurogroup Consulting is a Management and Strategy firm. It was created in 1982 and is of European essence. The firm is known and recognised for its interventions across all sectors, in the public and...
35.
Magnus Red
Magnus Red is een organisatieadviesbureau dat complexe en omvangrijke adviesprojecten en veranderingstrajecten uitvoert. Projecten die van strategisch belang zijn voor onze opdrachtgevers. Dat doen w...
36.
NMS Consulting
NMS Consulting is a global management consulting firm providing strategic counsel to private and public organizations and the individuals who lead them. The combination of our diverse skills, global ...
37.
Projective
In 2006, Projective's founders, Stefan Dierckx and Filip Bosschaert, felt there was a gap in the financial services project management landscape. There have always been a host of traditional consulta...
38.
Q5
Q5 is an international award-winning consulting firm that specialises in "organisational change". At our heart, 'Q5ers' help business leaders develop organisational strategy then implement it -- thro...
39.
SparkOptimus
SparkOptimus is the leading digital strategy consultant of Europe with a 100% focus on helping organisations to realise new technology driven growth. At SparkOptimus we have a passion for the possibi...
40.
Synergy Group
Founded in 1999, Synergy has grown to become one of Canberra’s leading professional services firms. We are government specialists delivering a truly collaborative approach to navigate important chall...
41.
Anderson MacGyver
Anderson MacGyver achieves business value through smarter use of IT and information. No longer 'IT and the business', but together one vision and strategy towards the end customer. This translates in...
42.
Bonfiglioli Consulting
Since 1973, Bonfiglioli Consulting, an Italian management consulting company, has been working side by side with organizations to support their growth and success in global markets. We support our cl...
43.
Delta Capita
Delta Capita is a leading global financial services provider of managed services, technology solutions and consulting. Delta Capita has a unique combination of experience in Financial Services and te...
44.
Elixirr
The Challenger Consultancy Elixirr is a global award-winning challenger consultancy. With roots in strategy consulting, their capabilities are constantly evolving as they grow, ranging from business ...
45.
First Consulting
First Consulting is a rapidly growing, no-nonsense consultancy organisation with a passion for operational processes. We were founded in the Netherlands in 2006, and expanded to the UK in 2017. Our g...
46.
INNOPAY
We are a consultancy firm specialised in digital transactions. We help companies anywhere in the world to harness the full potential of the digital transactions era. We do this by delivering strategy...
47.
Maine Pointe
Maine Pointe is a global supply chain and operations consulting firm trusted by many chief executives and private equity firms to drive compelling economic returns for their companies. This is achiev...
48.
North Highland
North Highland is a global management consulting firm known for helping clients solve their most complex challenges related to customer experience, performance improvement, technology and digital, an...
49.
Pollen Consulting Group
Creating great things from small humble beginnings defines the ethos of Pollen Consulting Group. We are fast becoming the go to people for value chain transformations, bottom-line performance and fos...
50.
Twynstra Gudde
Twynstra Gudde is a Dutch management consultancy that is located in the middle of the world. We understand the customer's questions and challenge ourselves daily to come up with the customer to innov...
51.
umlaut
umlaut is a global, full-service, cross-industry, end-to-end company that offers advisory and fulfillment services to clients all over the world. We utilise our interdisciplinary capabilities to add ...
52.
UMS Group
UMS is a boutique consultancy firm specialized in technical and commercial asset management. Since 1989, we are helping our customers in power generation, industry, gas & electricity transmission and...
53.
Valcon
Valcon is the premium operations consulting firm in Europe, and that means that we are the champions of connecting strategy and operations and making it work. We call this The HOW. Valcon’s HOW is ou...
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