List of IT consulting firms explained

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
	Mumbai, India	614,795	March 2023^[1]
	Bengaluru, India	343,234	March 2023^[2]
	Bengaluru, India	256,921	March 2023^[3]
HCL Technologies	Noida, India	225,944	March 2023^[4]
birlasoft	Pune, India	12,193	March 2023^[5]
	Pune, India	152,400	March 2023^[6]
	Bengaluru, India	21,685	December 2022^[7]
	Mumbai, India	59,755	March 2023^[8]
	Mumbai, India	16,804	December 2022^[9]
	Bengaluru, India	12,000	June 2021^[10]
	Tokyo, Japan	195,100	March 2023^[11]
firstsource	Mumbai, India	23,018	March 2023^[12]
Fujitsu	Tokyo, Japan	124,216	March 2022^[13]
	Mumbai, India	84,546	March 2023^[14]
	Bengaluru, India	34,042	March 2023^[15]
	Dalian, China	23,954
	Shenyang, China	20,000	December 2020^[16]
	Vadodara, India	22,233	March 2023^[17]
	Pune, India	22,598	March 2023^[18]
	Hyderabad, India	15,864	March 2023^[19]
	Pune, India	11,013	March 2023^[20]
	Noida, India	23,224	March 2023^[21]
	Pune, India	10,563	March 2023^[22]
	Mumbai, India	10,744	March 2022^[23]
		10,000

Europe

Name		Headquarters !	Total employees	As of
	Dublin, Ireland	738,143	February 2023^[24]
	Boulogne-Billancourt, France	54,100	December 2022^[25]
	Rzeszow, Poland	32,400	January 2023^[26]
	Bezons, France	110,270	March 2023^[27]
	Paris, France	342,700	September 2023^[28]
	London, England	415,000	May 2022^[29]
	London, England	365,399	June 2022^[30]
	Luxembourg City, Luxembourg	27,500	September 2023^[31]
	London, England	62,000	December 2022^[32]
	Madrid, Spain	56,573	March 2023^[33]
	Amstelveen, Netherlands	273,424	September 2023^[34]
	Zug, Switzerland	17,000	March 2023
	Paris, France	29,100	December 2022^[35]
	London, England	364,232	June 2023^[36]
	Paris, France	53,724	March 2023^[37]
	Espoo, Finland	24,071	March 2023^[38]
	Frankfurt, Germany	28,000	December 2022^[39]

North America

Name		Headquarters !	Total employees	As of
	Seattle, Washington, United States	50,000	December 2021^[40]
	McLean, Virginia, United States	25,803	February 2019^[41]
	Montreal, Canada	91,000	March 2023^[42]
	Teaneck, New Jersey, United States	351,500	March 2023^[43]
	Newark, California, United States	440,000	December 2023^[44]
	Florham Park, New Jersey, United States	58,600	March 2023^[45]
	Tysons, Virginia, United States	134,035	December 2022^[46]
	Newtown, Pennsylvania, United States	57,450	March 2023^[47]
	New York City, New York, United States	45,400	December 2022^[48]
	New York City, New York, United States	119,000	March 2023^[49]
	Spring, Texas, United States	60,200	March 2023^[50]
	San Diego, California, United States	45,000	December 2022^[51]
	New York, New York, United States	87,708	January 2023^[52]
	Monterrey, Mexico	12,000	November 2017^[53]
	Reston, Virginia, United States	23,000	February 2019^[54]
	Vancouver, Canada	58,000	December 2020^[55]
	Blue Bell, Pennsylvania, United States	17,200	December 2020^[56]
	Aliso Viejo, California, United States	30,000	October 2023
	Southborough, Massachusetts, United States	30,000	October 2020
	Stamford, Connecticut, United States	19,830	March 2023^[57]
	Seattle, Washington, United States	13,000	April 2023^[58]

South America

Name		Headquarters !	Total company employees	As of
Algar Tech	Uberlândia, Brazil	21,000	November 2022^[59]
Totvs	São Paulo, Brazil	12,000	November 2022^[60]
Stefanini IT Solutions	Jaguariúna, Brazil	30,000	April 2022^[61]

Defunct entities

• marchFIRST, Inc.

Notes and References

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58. Web site: Who we are. September 2023.
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61. Web site: 2022-04-16. Stefanini: Sobre. 2022-04-16. Stefanini. pt-BR.