The following is a list of the largest notable information technology consulting firms in the world, along with their corporate headquarters location and the total number of consultants they have. Many of these serve primarily as third-party consultants and outsourcing partners. Many enterprise software companies employ their own consultants for services related to their own products. Among the corporations listed below, the number of consultants listed is less than their total number of employees.
Note: Not all employees of these firms are consultants and firms with less than 10,000 employees are not included.
By continent
Asia Name Headquarters Total employees As ofTata Consultancy Services Mumbai, India 614,795 March 2023Infosys Bengaluru, India 343,234 March 2023Wipro Bengaluru, India 256,921 March 2023HCL Technologies Noida, India 225,944 March 2023birlasoft Pune, India 12,193 March 2023Tech Mahindra Pune, India 152,400 March 2023Hinduja Global Solutions Bengaluru, India 21,685 December 2022WNS Global Services Mumbai, India 59,755 March 2023ITC Infotech Bengaluru, India 12,000 June 2021NTT Data Tokyo, Japan 195,100 March 2023firstsource Mumbai, India 23,018 March 2023Fujitsu Tokyo, Japan 124,216 March 2022LTIMindtree Mumbai, India 84,546 March 2023Mphasis Bengaluru, India 34,042 March 2023Pactera Dalian, China 23,954Neusoft Group Shenyang, China 20,000December 2020L&T Technology Services Vadodara, India 22,233 March 2023Persistent Systems Pune, India 22,598 March 2023Cyient Hyderabad, India 15,864 March 2023KPIT Technologies Pune, India 11,013 March 2023Coforge Noida, India 23,224 March 2023Zensar Technologies Pune, India 10,563 March 2023NCS Group Singapore 10,000iSoftStone Beijing, China 85,470 December 2023
Europe Name Headquarters Total employees As ofAccenture Dublin, Ireland 738,143 February 2023Akkodis Brussels, Belgium 50,000 August 2024Alten Boulogne-Billancourt, France 54,100 December 2022Asseco Rzeszów, Poland 32,400 January 2023Atos Bezons, France 110,270 March 2023Capgemini Paris, France 423,400 December 2025Deloitte London, United Kingdom 415,000 May 2022 Ernst & Young London, United Kingdom 365,399 June 2022Globant Luxembourg, Luxembourg 27,500 September 2023Grant Thornton International London, United Kingdom 62,000 December 2022Indra Madrid, Spain 56,573 March 2023KPMG Amstelveen, Netherlands 273,424 September 2023 Luxoft Zug, Switzerland 17,000 March 2023 Orange Business Services Paris, France 29,100 December 2022PricewaterhouseCoopers London, United Kingdom 364,232 June 2023Sopra Steria Paris, France 53,724 March 2023TietoEVRY Espoo, Finland 24,071 March 2023T-Systems Frankfurt, Germany 28,000 December 2022
North America Name Headquarters Total employees As ofAvanade Seattle, Washington, United States 50,000 December 2021Booz Allen Hamilton McLean, Virginia, United States 25,803 February 2019CGI Inc. Montreal, Canada 91,000 March 2023Cognizant Technology Solutions Teaneck, New Jersey, United States 351,500 March 2023Concentrix Newark, California, United States 440,000 December 2023Conduent Florham Park, New Jersey, United States 58,600 March 2023DXC Technology Tysons, Virginia, United States 134,035 December 2022EXL Service New York City, New York, United States 45,400 December 2022Genpact New York City, New York, United States 119,000 March 2023Hewlett Packard Enterprise Spring, Texas, United States 60,200 March 2023IBM Consulting New York City, United States 160,000 November 2025.Leidos San Diego, California, United States 45,000 December 2022Kyndryl New York, New York, United States 87,708 January 2023Softtek Monterrey, Mexico 12,000 November 2017Science Applications International Corporation Reston, Virginia, United States 23,000 February 2019Telus International Vancouver, Canada 58,000 December 2020Unisys Blue Bell, Pennsylvania, United States 17,200 December 2020UST Aliso Viejo, California, United States 30,000 October 2023Virtusa Southborough, Massachusetts, United States 30,000 October 2020Gartner Stamford, Connecticut, United States 19,830 March 2023Slalom Consulting Seattle, Washington, United States 13,000 April 2023
South America Name Headquarters Total company employees As ofAlgar TechUberlândia, Brazil 21,000 November 2022TotvsSão Paulo, Brazil 12,000 November 2022Stefanini IT SolutionsJaguariúna, Brazil 30,000 April 2022
References