Company lists · Data refreshed September 2026

Top 25 Business process outsourcing consultants worldwide

Name: Business process outsourcing consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 42,363 companies tracked

RevenueBase identified 42,363 business process outsourcing consultants worldwide as of September 2026 and tracks 960,695 professional contacts across them, including 198,554 with verified work emails and 77,669 with mobile numbers. The United States is the largest market and Sao Paulo the largest hub.

This list covers business process outsourcing consultants 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 28, 2026. Country and city lists for business process outsourcing consultants 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 28, 2026 86% judged on-target in blind review

42,363Companies

960,695Contacts tracked

198,554Verified emails

77,669Mobile numbers

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The 25 largest business process outsourcing consultants worldwide

Ranked by team size

Top 25 of 42,363 business process outsourcing consultants worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to business process outsourcing consultants: 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	Partial evidence	Madrid, MexicoHQ checked Sep 28, 2026	10001+	77,129 contacts →
	Partial 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 28, 2026
2	WNS	Indirect evidence	New York, United StatesHQ checked Sep 28, 2026	10001+	46,488 contacts →
	Indirect evidence “WNS, part of Capgemini, is a global Agentic AI-powered intelligent operations and transformation company.” Source: RevenueBase Database · checked Sep 28, 2026
3	EXL	Indirect evidence	New York, NY, United StatesHQ checked Sep 28, 2026	10001+	40,100 contacts →
	Indirect evidence “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Source: RevenueBase Database · checked Sep 28, 2026
4	TTEC	Indirect evidence	Austin, TX, United StatesHQ checked Sep 28, 2026	10001+	26,420 contacts →
	Indirect evidence “We’re TTEC (pronounced t.tec).” Source: RevenueBase Database · checked Sep 28, 2026
5	Konecta	Strong evidence	Madrid, SpainHQ checked Sep 28, 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 28, 2026
6	Capita	Partial evidence	London, United KingdomHQ checked Sep 28, 2026	10001+	20,824 contacts →
	Partial 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 28, 2026
7	AEC	Partial evidence	Belo Horizonte, BrazilHQ checked Sep 28, 2026	10001+	20,095 contacts →
	Partial 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 28, 2026
8	ZS	Indirect evidence	Evanston, IL, United StatesHQ checked Sep 28, 2026	10001+	16,896 contacts →
	Indirect evidence “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Source: RevenueBase Database · checked Sep 28, 2026
9	Insight Global	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 28, 2026	n/a	15,553 contacts →
	Indirect evidence “Insight Global is an international talent and consulting company that delivers business outcomes in an ever-changing world.” Source: RevenueBase Database · checked Sep 28, 2026
10	VXI Global Solutions	Indirect evidence	Los Angeles, CA, United StatesHQ checked Sep 28, 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 28, 2026
11	NTT Data Business Solutions	Indirect evidence	Bielefeld, GermanyHQ checked Sep 28, 2026	10001+	10,733 contacts →
	Indirect evidence “We understand the business of our clients and know what it takes to transform it into the future.” Source: RevenueBase Database · checked Sep 28, 2026
12	Slalom	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 28, 2026	10001+	10,032 contacts →
	Indirect evidence “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Source: RevenueBase Database · checked Sep 28, 2026
13	Comdata Group	Indirect evidence	Corsico, ItalyHQ checked Sep 28, 2026	10001+	9,614 contacts →
	Indirect evidence “We're KONECTA now!” Source: RevenueBase Database · checked Sep 28, 2026
14	Protiviti	Indirect evidence	Menlo Park, CA, United StatesHQ checked Sep 28, 2026	5,001-10,000	8,779 contacts →
	Indirect evidence “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Source: RevenueBase Database · checked Sep 28, 2026
15	Yash Technologies	Indirect evidence	East Moline, IL, United StatesHQ checked Sep 28, 2026	5,001-10,000	7,769 contacts →
	Indirect evidence “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Source: RevenueBase Database · checked Sep 28, 2026
16	Logica	Strong evidence	Montreal, QC, CanadaHQ checked Sep 28, 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 28, 2026
17	CCI Global	Strong evidence	Durban, South AfricaHQ checked Sep 28, 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 28, 2026
18	Wavestone	Indirect evidence	100-101 Terrasse Boieldieu, FranceHQ checked Sep 28, 2026	1,001-5,000	6,190 contacts →
	Indirect evidence “Wavestone is a leading consulting firm operating at the intersection of business and technology.” Source: RevenueBase Database · checked Sep 28, 2026
19	Liderança Serviços	Indirect evidence	São José, BrazilHQ checked Sep 28, 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 28, 2026
20	Management Solutions	Indirect evidence	Madrid, SpainHQ checked Sep 28, 2026	1,001-5,000	4,468 contacts →
	Indirect evidence “Management Solutions is a leading provider of business consulting services for regulated industries.” Source: RevenueBase Database · checked Sep 28, 2026
21	Apex America	Indirect evidence	Córdoba, ArgentinaHQ checked Sep 28, 2026	10001+	4,377 contacts →
	Indirect evidence “At Apex America, we are a Next Generation BPO and a global strategic partner specialized in elevating customer service standards.” Source: RevenueBase Database · checked Sep 28, 2026
22	Callink	Indirect evidence	Uberlândia, BrazilHQ checked Sep 28, 2026	5,001-10,000	4,126 contacts →
	Indirect evidence “Mais que call center: soluções que transformam o seu negócio e a jornada dos clientes!” Source: RevenueBase Database · checked Sep 28, 2026
23	SX Negócios	Indirect evidence	Novo Hamburgo, BrazilHQ checked Sep 28, 2026	5,001-10,000	4,020 contacts →
	Indirect evidence “Somos a Pulse Client Experts, uma empresa em constante evolução, impulsionados pela vontade de fazer acontecer.” Source: RevenueBase Database · checked Sep 28, 2026
24	Merchants	Strong evidence	Johannesburg, South AfricaHQ checked Sep 28, 2026	5,001-10,000	3,654 contacts →
	Strong evidence “Merchants is a leading customer management partner specialising in business process outsourcing (BPO) that delivers customer experience and customer interactions.” Source: RevenueBase Database · checked Sep 28, 2026
25	Accenture Dach	Partial evidence	Kronberg Im Taunus, GermanyHQ checked Sep 28, 2026	10001+	3,644 contacts →
	Partial evidence “Über Accenture: Wir sind die weltweit führenden Berater für Strategie, Management, Digitalisierung, Technologie, Outsourcing und Business Transformation.” Source: RevenueBase Database · checked Sep 28, 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: business process outsourcing consultants. 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 business process outsourcing consultants.
Partial evidence: Its own public description names part of business process outsourcing consultants, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name business process outsourcing consultants. 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 42,363 business process outsourcing consultants worldwide

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Business process outsourcing consultants worldwide at a glance

As of Sep 28, 2026

20.7%Verified-email coverage

8.1%Mobile-number coverage

22.7Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

29,015

11-50

8,655

51-200

2,855

201-500

875

501-1,000

392

1,001-5,000

304

5,001-10,000

10001+

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 business process outsourcing consultants, 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: 41 countries, largest first: the United States, Brazil, the United Kingdom, France, Germany, Canada, Spain, Australia, Italy, Mexico and 31 more. Country and city lists for business process outsourcing consultants are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “business process outsourcing consultants”. 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 business process outsourcing consultants), 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 business process outsourcing consultants, 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, 198,554 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 28, 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.

Business process outsourcing consultants by location

189 lists · largest first

Every Business process outsourcing consultants 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 business process outsourcing consultants, 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 business process outsourcing consultants are there worldwide?

RevenueBase identified 42,363 business process outsourcing consultants 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 business process outsourcing consultants?

The United States leads with 12,611 companies, followed by Brazil (5,767) and the United Kingdom (3,161). Every business process outsourcing consultants list by country and city is linked on this page.

Which city has the most business process outsourcing consultants?

Sao Paulo leads with 1450 headquartered companies, followed by London (1061) and Paris (664).

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 198,554 verified decision-maker contacts tracked across these 42,363 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 28, 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.