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
614,795
March 2023[ 1]
Infosys
Bengaluru , India
343,234
March 2023[ 2]
Wipro
Bengaluru , India
256,921
March 2023[ 3]
HCL Technologies
Noida , India
225,944
March 2023[ 4]
birlasoft
Pune , India
12,193
March 2023[ 5]
Tech Mahindra
Pune , India
152,400
March 2023[ 6]
Hinduja Global Solutions
Bengaluru , India
21,685
December 2022[ 7]
WNS Global Services
Mumbai , India
59,755
March 2023[ 8]
eClerx
Mumbai , India
16,804
December 2022[ 9]
ITC Infotech
Bengaluru , India
12,000
June 2021[ 10]
NTT Data
Tokyo , Japan
195,100
March 2023[ 11]
firstsource
Mumbai , India
23,018
March 2023[ 12]
Fujitsu
Tokyo , Japan
124,216
March 2022[ 13]
LTIMindtree
Mumbai , India
84,546
March 2023[ 14]
Mphasis
Bengaluru , India
34,042
March 2023[ 15]
Pactera
Dalian , China
23,954
Neusoft Group
Shenyang , China
20,000
December 2020[ 16]
L&T Technology Services
Vadodara , India
22,233
March 2023[ 17]
Persistent Systems
Pune , India
22,598
March 2023[ 18]
Cyient
Hyderabad , India
15,864
March 2023[ 19]
KPIT Technologies
Pune , India
11,013
March 2023[ 20]
Coforge
Noida , India
23,224
March 2023[ 21]
Zensar Technologies
Pune , India
10,563
March 2023[ 22]
Datamatics
Mumbai , India
10,744
March 2022[ 23]
NCS Group
Singapore
10,000
Europe
Name
Headquarters
Total employees
As of
Accenture
Dublin , Ireland
738,143
February 2023[ 24]
Akkodis
Bruxelles , Belgique
50,000
August 2024
Alten
Boulogne-Billancourt , France
54,100
December 2022[ 25]
Asseco
Rzeszow , Poland
32,400
January 2023[ 26]
Atos
Bezons , France
110,270
March 2023[ 27]
Capgemini
Paris , France
342,700
September 2023[ 28]
Deloitte
London , England
415,000
May 2022[ 29]
Ernst & Young
London , England
365,399
June 2022[ 30]
Globant
Luxembourg City , Luxembourg
27,500
September 2023[ 31]
Grant Thornton International
London , England
62,000
December 2022[ 32]
Indra
Madrid , Spain
56,573
March 2023[ 33]
KPMG
Amstelveen , Netherlands
273,424
September 2023[ 34]
Luxoft
Zug , Switzerland
17,000
March 2023
Orange Business Services
Paris , France
29,100
December 2022[ 35]
PricewaterhouseCoopers
London , England
364,232
June 2023[ 36]
Sopra Steria
Paris , France
53,724
March 2023[ 37]
TietoEVRY
Espoo , Finland
24,071
March 2023[ 38]
T-Systems
Frankfurt , Germany
28,000
December 2022[ 39]
North America
Name
Headquarters
Total employees
As of
Avanade
Seattle, Washington , United States
50,000
December 2021[ 40]
Booz Allen Hamilton
McLean, Virginia , United States
25,803
February 2019[ 41]
CGI Inc.
Montreal , Canada
91,000
March 2023[ 42]
Cognizant Technology Solutions
Teaneck, New Jersey , United States
351,500
March 2023[ 43]
Concentrix
Newark, California , United States
440,000
December 2023[ 44]
Conduent
Florham Park, New Jersey , United States
58,600
March 2023[ 45]
DXC Technology
Tysons, Virginia , United States
134,035
December 2022[ 46]
EPAM Systems
Newtown, Pennsylvania , United States
57,450
March 2023[ 47]
EXL Service
New York City, New York , United States
45,400
December 2022[ 48]
Genpact
New York City, New York , United States
119,000
March 2023[ 49]
Hewlett Packard Enterprise
Spring, Texas , United States
60,200
March 2023[ 50]
Leidos
San Diego, California , United States
45,000
December 2022[ 51]
Kyndryl
New York, New York , United States
87,708
January 2023[ 52]
Softtek
Monterrey , Mexico
12,000
November 2017[ 53]
Science Applications International Corporation
Reston, Virginia , United States
23,000
February 2019[ 54]
Telus International
Vancouver , Canada
58,000
December 2020[ 55]
Unisys
Blue Bell, Pennsylvania , United States
17,200
December 2020[ 56]
UST
Aliso Viejo, California , United States
30,000
October 2023
Virtusa
Southborough, Massachusetts , United States
30,000
October 2020
Gartner
Stamford, Connecticut , United States
19,830
March 2023[ 57]
Slalom Consulting
Seattle, Washington , United States
13,000
April 2023[ 58]
South America
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