Company lists · Data refreshed September 2026

Top 25 Outsourcing service providers worldwide

Name: Outsourcing service providers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 19,305 companies tracked

RevenueBase identified 19,305 outsourcing service providers worldwide as of September 2026 and tracks 1,224,389 professional contacts across them, including 125,022 with verified work emails. India is the largest market and Lahore the largest hub.

This list covers outsourcing service providers worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026. Country and city lists for outsourcing service providers follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

19,305Companies

1,224,389Contacts tracked

125,022Verified emails

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The 25 largest outsourcing service providers worldwide

Ranked by team size

Top 25 of 19,305 outsourcing service providers worldwide, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to outsourcing service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Atento	Strong evidence	Madrid, MexicoHQ checked Sep 21, 2026	10001+	77,129 contacts →
	Strong evidence “We are one of the world's largest global providers of customer relationship management and business transformation outsourcing (CRM/BTO) services and industry leaders in Latin…” Source: RevenueBase Database · checked Sep 21, 2026
2	Infosys BPM	Indirect evidence	Bengaluru, IndiaHQ checked Sep 21, 2026	10001+	39,588 contacts →
	Indirect evidence “Infosys BPM Ltd, the business process management subsidiary of Infosys Ltd.(NYSE: INFY), was set up in April 2002.” Source: RevenueBase Database · checked Sep 21, 2026
3	Hexaware Technologies	Indirect evidence	Navi Mumbai, IndiaHQ checked Sep 21, 2026	10001+	33,202 contacts →
	Indirect evidence “At Hexaware, we're not just a global technology and business process services company; we're a community of 31,600+ Hexawarians dedicated to one singular purpose: creating smiles…” Source: RevenueBase Database · checked Sep 21, 2026
4	TTEC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 21, 2026	10001+	26,420 contacts →
	Indirect evidence “We’re TTEC (pronounced t.tec).” Source: RevenueBase Database · checked Sep 21, 2026
5	HGS	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 21, 2026	10001+	24,115 contacts →
	Indirect evidence “HGS is a global provider of technology, AI, and business services, helping organizations transform with confidence.” Source: RevenueBase Database · checked Sep 21, 2026
6	Konecta	Strong evidence	Madrid, SpainHQ checked Sep 21, 2026	10001+	23,763 contacts →
	Strong evidence “Konecta is a leading innovative global service provider in customer management business process outsourcing, with passionate employees working in 40 languages across 4 continents…” Source: RevenueBase Database · checked Sep 21, 2026
7	Capita	Indirect evidence	London, United KingdomHQ checked Sep 21, 2026	10001+	20,824 contacts →
	Indirect evidence “Capita is an outsourcer, helping clients across the public and private sectors run complex business processes more efficiently, creating better consumer experiences.” Source: RevenueBase Database · checked Sep 21, 2026
8	AEC	Indirect evidence	Belo Horizonte, BrazilHQ checked Sep 21, 2026	10001+	20,095 contacts →
	Indirect evidence “A AeC é apontada consistentemente como a líder brasileira na entrega de soluções de experiência do cliente e gestão de processos terceirizados.” Source: RevenueBase Database · checked Sep 21, 2026
9	Firstsource	Indirect evidence	Mumbai, IndiaHQ checked Sep 21, 2026	10001+	17,257 contacts →
	Indirect evidence “Firstsource Solutions Limited, an RP-Sanjiv Goenka Group company, is a global intelligence partner to enterprises across healthcare, banking and financial services…” Source: RevenueBase Database · checked Sep 21, 2026
10	IBEX	Strong evidence	Washington, DC, United StatesHQ checked Sep 21, 2026	10001+	15,457 contacts →
	Strong evidence “ibex delivers innovative business process outsourcing (BPO), smart digital marketing, online acquisition technology, and end-to-end customer engagement solutions to help companies…” Source: RevenueBase Database · checked Sep 21, 2026
11	Ienergizer	Strong evidence	Noida, IndiaHQ checked Sep 21, 2026	10001+	14,745 contacts →
	Strong evidence “iEnergizer is a leading Business Process Outsourcing provider (“BPO”) of customer management solutions dedicated to delivering performance while actively supporting and advocating…” Source: RevenueBase Database · checked Sep 21, 2026
12	VXI Global Solutions	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 21, 2026	10001+	14,238 contacts →
	Indirect evidence “About VXI Global Solutions VXI Global Solutions is a BPO leader in customer service, customer experience, and digital solutions.” Source: RevenueBase Database · checked Sep 21, 2026
13	Intelcia	Strong evidence	Casablanca, MoroccoHQ checked Sep 21, 2026	10001+	13,214 contacts →
	Strong evidence “Intelcia is a global player in outsourcing, which has supported its clients for 20 years combining talents, technologies, and processes to offer a tailor-made service and skills…” Source: RevenueBase Database · checked Sep 21, 2026
14	Comdata Group	Indirect evidence	Corsico, ItalyHQ checked Sep 21, 2026	10001+	9,614 contacts →
	Indirect evidence “We're KONECTA now!” Source: RevenueBase Database · checked Sep 21, 2026
15	HTC Global Services	Indirect evidence	Troy, MI, United StatesHQ checked Sep 21, 2026	10001+	8,866 contacts →
	Indirect evidence “HTC Global Services Inc, founded in 1990, headquartered in Troy, Michigan, is a global provider of Information Technology and Business Process Services and Solutions.” Source: RevenueBase Database · checked Sep 21, 2026
16	Conneqt Business Solutions	Indirect evidence	Bangalore, IndiaHQ checked Sep 21, 2026	10001+	7,980 contacts →
	Indirect evidence “Conneqt Business Solutions, now Digitide Solutions Ltd, was established in 2004.” Source: RevenueBase Database · checked Sep 21, 2026
17	Logica	Strong evidence	Montreal, QC, CanadaHQ checked Sep 21, 2026	10001+	7,416 contacts →
	Strong evidence “Logica is now part of CGI, a global IT and business process services provider delivering business consulting, systems integration and outsourcing services.” Source: RevenueBase Database · checked Sep 21, 2026
18	CCI Global	Strong evidence	Durban, South AfricaHQ checked Sep 21, 2026	10001+	6,349 contacts →
	Strong evidence “CCI Global is a distinguished leader in the Business Process Outsourcing (BPO) industry in Africa- Headquartered in the UAE, CCI is renowned for exceptional services across a…” Source: RevenueBase Database · checked Sep 21, 2026
19	XCEED	Strong evidence	Cairo, EgyptHQ checked Sep 21, 2026	10001+	6,302 contacts →
	Strong evidence “Xceed is the leading multilingual Business Process Outsourcing Service provider in EMEA region with a capacity of more than web enabled multi channels stations.” Source: RevenueBase Database · checked Sep 21, 2026
20	Turkcell Global Bilgi	Indirect evidence	Beyoglu, TürkiyeHQ checked Sep 21, 2026	10001+	6,167 contacts →
	Indirect evidence “Bir Turkcell grup şirketi olarak yılında kurulduğumuzda amacımız hep eşsiz bir müşteri deneyimi yaşatmaktı.” Source: RevenueBase Database · checked Sep 21, 2026
21	Everise	Indirect evidence	Plantation, FL, United StatesHQ checked Sep 21, 2026	10001+	5,863 contacts →
	Indirect evidence “Everise delivers happiness to millions of customers around the world.” Source: RevenueBase Database · checked Sep 21, 2026
22	Aspire Systems	Indirect evidence	Chennai, IndiaHQ checked Sep 21, 2026	1,001-5,000	4,953 contacts →
	Indirect evidence “Aspire Systems is a global technology services firm serving as a trusted technology partner for our customers.” Source: RevenueBase Database · checked Sep 21, 2026
23	CGS Computer Generated Solutions	Indirect evidence	New York, NY, United StatesHQ checked Sep 21, 2026	5,001-10,000	4,608 contacts →
	Indirect evidence “For over 40 years, CGS has enabled global enterprises, regional companies, and government agencies to drive breakthrough performance through business applications, enterprise…” Source: RevenueBase Database · checked Sep 21, 2026
24	Liderança Serviços	Indirect evidence	São José, BrazilHQ checked Sep 21, 2026	10001+	4,504 contacts →
	Indirect evidence “Atuamos nos principais setores de terceirização, e somos pioneiros na implantação de contratos à distância.” Source: RevenueBase Database · checked Sep 21, 2026
25	Startek India	Strong evidence	Mumbai, IndiaHQ checked Sep 21, 2026	10001+	4,389 contacts →
	Strong evidence “Startek is a leading global provider of technology-enabled business process outsourcing solutions.” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: outsourcing service providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names outsourcing service providers.
Partial evidence: Its own public description names part of outsourcing service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name outsourcing service providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 19,305 outsourcing service providers worldwide

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Outsourcing service providers worldwide at a glance

As of Sep 21, 2026

10.2%Verified-email coverage

63.4Average contacts per company

11-50Median size (employees)

2.0%Largest-city concentration · Lahore

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

4,606

11-50

6,840

51-200

4,345

201-500

1,684

501-1,000

748

1,001-5,000

713

5,001-10,000

158

10001+

174

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among outsourcing service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for outsourcing service providers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “outsourcing service providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names outsourcing service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among outsourcing service providers, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 125,022 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 21, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Outsourcing service providers by location

97 lists · largest first

Every Outsourcing service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names outsourcing service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many outsourcing service providers are there worldwide?

RevenueBase identified 19,305 outsourcing service providers worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Atento, headquartered in Madrid, tops this list with the largest team on record.

Which country has the most outsourcing service providers?

India leads with 3,800 companies, followed by the United States (2,391) and the Philippines (1,118). Every outsourcing service providers list by country and city is linked on this page.

Which city has the most outsourcing service providers?

Lahore leads with 378 headquartered companies, followed by London (241) and Sao Paulo (238).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 125,022 verified decision-maker contacts tracked across these 19,305 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 21, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.