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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 of
Tata Consultancy Services Mumbai , India 509,058
June 2021[ 1]
Infosys Bengaluru , India 267,953
June 2021[ 2]
Wipro Bengaluru , India 209,890
June 2021[ 3]
HCL Technologies Noida , India 176,499
June 2021[ 4]
NTT Data Tokyo , Japan 139,500
March 2021[ 5]
Fujitsu Tokyo , Japan 126,371
March 2021[ 6]
Tech Mahindra Pune , India 126,263
June 2021[ 7]
WNS Global Services Mumbai , India 46,918
June 2021[ 8]
Larsen & Toubro Infotech Mumbai , India 35,991
March 2021
Mphasis Bengaluru , India 29,473
June 2021
Mindtree Bengaluru , India 25,814
June 2021
Pactera Beijing , China 23,954
Neusoft Group Shenyang , China 20,000
December 2020[ 9]
L&T Technology Services Vadodara , India 20,000
March 2021
Persistent Systems Pune , India 15,000
March 2020
Cyient Hyderabad , India 15,000
March 2018
KPIT Technologies Pune , India 12,000
March 2018
Coforge Noida , India 11,162
September 2020[ 10]
Zensar Technologies Pune , India 11,000
March 2018
Datamatics Mumbai , India 10,000
December 2019
NCS Group Singapore 10,000
Europe
Name
Headquarters
Total employees
As of
Accenture Dublin , Ireland 568,727
Feb 2021[ 11]
Alten Boulogne-Billancourt , France 30,000
November 2018[ 12]
Atos Bezons , France 104,808
June 2021[ 13]
Capgemini Paris , France 289,500
June 2021[ 14]
Deloitte London , England 345,000
May 2021[ 15]
Ernst & Young London , England 298,965
September 2020[ 16]
Grant Thornton International London , England 52,686
January 2019[ 17]
Indra Madrid , Spain 42,860
February 2019[ 18]
KPMG Amstelveen , Netherlands 227,000
September 2020[ 19]
Orange Business Services Paris , France 27,000
May 2020[ 20]
PricewaterhouseCoopers London , England 284,258
June 2020[ 21]
Sopra Steria Paris , France 42,000
October 2018[ 22]
TietoEVRY Espoo , Finland 23,877
September 2020[ 23]
T-Systems Frankfurt , Germany 37,500
March 2019[ 24]
North America
Name
Headquarters
Total employees
As of
Avanade Seattle, Washington , United States 30,000
August 2018[ 25]
Booz Allen Hamilton McLean, Virginia , United States 25,803
February 2019[ 26]
CGI Inc. Montreal , Canada 78,000
December 2020 [ 27]
Cognizant Technology Solutions Teaneck, New Jersey , United States 301,200
June 2021 [ 28]
Conduent Florham Park, New Jersey , United States 90,000
June 2018[ 29]
DXC Technology Tysons, Virginia , United States 130,000
March 2021[ 30]
EPAM Systems Newtown, Pennsylvania , United States 30,100
December 2018[ 31]
EXL Service New York City, New York , United States 31,631
March 2021[ 32]
Genpact New York City, New York , United States 100,000
March 2021[ 33]
IBM Consulting Armonk, New York , United States 90,000
December 2020[ 34]
Softtek Monterrey , Mexico 12,000
November 2017[ 35]
Science Applications International Corporation Reston, Virginia , United States 23,000
February 2019[ 36]
Telus International Vancouver , Canada 58,000
December 2020 [ 37]
Unisys Blue Bell, Pennsylvania , United States 17,200
December 2020[ 38]
UST Global Aliso Viejo, California , United States 26,000
December 2020
Virtusa Southborough, Massachusetts , United States 30,000
October 2020
South America
Defunct but notable
References
Areas of Others Lists
