List of IT consulting firms

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
NameHeadquartersTotal employeesAs of
Tata Consultancy ServicesMumbai, India592,195April 2022[1]
InfosysBengaluru, India267,953June 2021[2]
WiproBengaluru, India209,890June 2021[3]
HCL TechnologiesNoida, India197,777January 2022[4]
Tech MahindraPune, India126,263June 2021[5]
Hinduja Global SolutionsBangaluru, India46,300December 2021[6]
WNS Global ServicesMumbai, India46,918June 2021[7]
eClerxMumbai, India11,000December 2021[8]
ITC InfotechBengaluru, India12,000June 2021[9]
NTT DataTokyo, Japan139,500March 2021[10]
firstsourceMumbai, India28,000December 2021[11]
FujitsuTokyo, Japan126,371March 2021[12]
Larsen & Toubro InfotechMumbai, India35,991March 2021
MphasisBengaluru, India29,473June 2021
MindtreeBengaluru, India25,814June 2021
PacteraBeijing, China23,954
Neusoft GroupShenyang, China20,000December 2020[13]
L&T Technology ServicesVadodara, India20,000March 2021
Persistent SystemsPune, India15,000March 2020
Quess CorpBangaluru, India384,132March 2020
CyientHyderabad, India15,000March 2018
KPIT TechnologiesPune, India12,000March 2018
CoforgeNoida, India11,162September 2020[14]
Zensar TechnologiesPune, India11,000March 2018
DatamaticsMumbai, India10,000December 2019
NCS GroupSingapore10,000

Europe
NameHeadquartersTotal employeesAs of
AccentureDublin, Ireland699,000April 2022[15]
AltenBoulogne-Billancourt, France30,000November 2018[16]
AtosBezons, France120,000April 2022[17]
CapgeminiParis, France289,500June 2021[18]
DeloitteLondon, England345,000May 2021[19]
Ernst & YoungLondon, England298,965September 2020[20]
Grant Thornton InternationalLondon, England52,686January 2019[21]
IndraMadrid, Spain42,860February 2019[22]
KPMGAmstelveen, Netherlands227,000September 2020[23]
Orange Business ServicesParis, France27,000May 2020[24]
PricewaterhouseCoopersLondon, England284,258June 2020[25]
Sopra SteriaParis, France42,000October 2018[26]
TietoEVRYEspoo, Finland23,877September 2020[27]
T-SystemsFrankfurt, Germany37,500March 2019[28]

North America
NameHeadquartersTotal employeesAs of
AvanadeSeattle, Washington, United States30,000August 2018[29]
Booz Allen HamiltonMcLean, Virginia, United States25,803February 2019[30]
CGI Inc.Montreal, Canada78,000December 2020 [31]
Cognizant Technology SolutionsTeaneck, New Jersey, United States301,200June 2021 [32]
ConduentFlorham Park, New Jersey, United States90,000June 2018[33]
DXC TechnologyTysons, Virginia, United States130,000March 2021[34]
EPAM SystemsNewtown, Pennsylvania, United States58,800December 2021[35]
EXL ServiceNew York City, New York, United States31,631March 2021[36]
GenpactNew York City, New York, United States100,000March 2021[37]
IBM ConsultingArmonk, New York, United States90,000December 2020[38]
SofttekMonterrey, Mexico12,000November 2017[39]
Science Applications International CorporationReston, Virginia, United States23,000February 2019[40]
Telus InternationalVancouver, Canada58,000December 2020 [41]
UnisysBlue Bell, Pennsylvania, United States17,200December 2020[42]
UST GlobalAliso Viejo, California, United States26,000December 2020
VirtusaSouthborough, Massachusetts, United States30,000October 2020

South America
NameHeadquartersTotal company employeesAs of
Stefanini IT SolutionsJaguariúna, Brazil30,000April 2022[43]

Defunct but notable

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