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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
eClerx
Mumbai , India
11,000
December 2021[1]
Tata Consultancy Services
Mumbai , India
509,058
June 2021[2]
Infosys
Bengaluru , India
267,953
June 2021[3]
ITC Infotech
Bengaluru , India
12,000
June 2021[4]
Wipro
Bengaluru , India
209,890
June 2021[5]
HCL Technologies
Noida , India
176,499
June 2021[6]
Hinduja Global Solutions
Bangalore , India
46,300
December 2021[7]
NTT Data
Tokyo , Japan
139,500
March 2021[8]
firstsource
Mumbai , India
28,000
December 2021[9]
Fujitsu
Tokyo , Japan
126,371
March 2021[10]
Tech Mahindra
Pune , India
126,263
June 2021[11]
WNS Global Services
Mumbai , India
46,918
June 2021[12]
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[13]
L&T Technology Services
Vadodara , India
20,000
March 2021
Persistent Systems
Pune , India
15,000
March 2020
Quess Corp
Bangalore , India
401,000
March 2018
Cyient
Hyderabad , India
15,000
March 2018
KPIT Technologies
Pune , India
12,000
March 2018
Coforge
Noida , India
11,162
September 2020[14]
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[15]
Alten
Boulogne-Billancourt , France
30,000
November 2018[16]
Atos
Bezons , France
104,808
June 2021[17]
Capgemini
Paris , France
289,500
June 2021[18]
Deloitte
London , England
345,000
May 2021[19]
Ernst & Young
London , England
298,965
September 2020[20]
Grant Thornton International
London , England
52,686
January 2019[21]
Indra
Madrid , Spain
42,860
February 2019[22]
KPMG
Amstelveen , Netherlands
227,000
September 2020[23]
Orange Business Services
Paris , France
27,000
May 2020[24]
PricewaterhouseCoopers
London , England
284,258
June 2020[25]
Sopra Steria
Paris , France
42,000
October 2018[26]
TietoEVRY
Espoo , Finland
23,877
September 2020[27]
T-Systems
Frankfurt , Germany
37,500
March 2019[28]
North America [ ]
Name
Headquarters
Total employees
As of
Avanade
Seattle, Washington , United States
30,000
August 2018[29]
Booz Allen Hamilton
McLean, Virginia , United States
25,803
February 2019[30]
CGI Inc.
Montreal , Canada
78,000
December 2020 [31]
Cognizant Technology Solutions
Teaneck, New Jersey , United States
301,200
June 2021 [32]
Conduent
Florham Park, New Jersey , United States
90,000
June 2018[33]
DXC Technology
Tysons, Virginia , United States
130,000
March 2021[34]
EPAM Systems
Newtown, Pennsylvania , United States
30,100
December 2018[35]
EXL Service
New York City, New York , United States
31,631
March 2021[36]
Genpact
New York City, New York , United States
100,000
March 2021[37]
IBM Consulting
Armonk, New York , United States
90,000
December 2020[38]
Softtek
Monterrey , Mexico
12,000
November 2017[39]
Science Applications International Corporation
Reston, Virginia , United States
23,000
February 2019[40]
Telus International
Vancouver , Canada
58,000
December 2020 [41]
Unisys
Blue Bell, Pennsylvania , United States
17,200
December 2020[42]
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 expertise Others Lists
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