Top U.S. Consulting Firms

?What If!, also known as What If - The Innovation Company"

Accenture plc is a global management consulting, technology services and outsourcing company headquartered in Dublin, Republic of Ireland. It is the largest consulting firm in the world and is a Fortune Global 500 company. As of August 2015, the company had more than 373,000 employees across 130 countries. Accenture's current clients include 96 of the Fortune Global 100 and more than three-quarters of the Fortune Global 500. Previously incorporated in the USA, then in Bermuda, since September 1, 2009 the company has been incorporated in Ireland.

Altarum Institute is a nonprofit health systems research and consulting organization serving government and private-sector clients. Altarum provides objective research and tailored consulting services to help clients understand and solve the complex systems problems that impact health and health care. By conducting both consulting and independent research, Altarum claims their model combines the benefits of an analytical research institution with the business acumen of a traditional consultancy to deliver comprehensive, systems-based solutions.

Analysis Group, Inc. founded in 1981, is the largest privately held economic consulting firm in the United States. The firm provides economic, financial and strategic analysis and expert testimony to law firms, corporations, and government agencies.

ArchPoint Consulting creates growth and productivity solutions for its clients. ArchPoint maintains focus on five key practice areas including Strategy & OGSM, People & Change, Brand & Marketing, Sourcing & Supply and Sales & Customers' each designed to work independently or as a unit to drive growth.

Atos S.A. is an international information technology corporation which operates in 42 countries worldwide, with over 78,500 employees. The company, Europe's largest IT services firm, is listed on Euronext Paris and is a member of the CAC Mid 60 stock market index.

Bain & Company is a global management consulting firm headquartered in Boston, Massachusetts. It provides advisory services to businesses, nonprofit organizations, and governments, and is one of the Big Three management consulting firms. The CEO is Bob Bechek and the CFO is Len Banos. Bain has 53 offices in 34 countries and 5,700 employees.

Booz Allen Hamilton Inc. NYSE: BAH, or more commonly Booz Allen, is an American public consulting firm headquartered in McLean, Fairfax County, Virginia, with 80 other offices throughout the United States. Ralph Shrader is its Chairman and Chief Executive Officer. The firm was founded by Edwin Booz in Chicago circa 1914. It is listed as number 438 in the 2011 Fortune 500.

Buck Consultants is a global HR benefits and human resource consulting firm.

Caiman Consulting Corporation is an business consulting firm headquartered in Redmond, Washington. The company provides services related to business analysis, sales and marketing, project management and product management.

Campbell Alliance is a specialized management consulting firm that serves the pharmaceutical and biotechnology industry. The firm is privately owned and was founded in 1997 by a former executive of GlaxoWellcome.

CGI Group Inc. is an information technology management and business process services company. Founded in 1976 and headquartered in Montreal, Canada, CGI employs approximately 31,000 professionals in over 125 offices in 16 countries. As of September 2010, CGI had an annual revenue of CA $3.7 billion.

Computer Sciences Corporation is an American information technology and business services company headquartered in Falls Church, Virginia, USA. CSC predominantly provides IT services in the following areas: systems integration and professional services; enterprise application development and management; application software for the financial services industry; business process outsourcing; managed hosting services; and application and IT infrastructure outsourcing. CSC's consulting and professional services include advising clients on the acquisition and utilization of IT and on business strategy, security, modeling, simulation, engineering, operations, change management and business process reengineering. CSC serves Fortune Global 1000 companies in fifteen industries and national and local governments. CSC employs about 93,000 people in 90 countries and ranks among the largest outsourcing companies in the world.