Company lists · Data verified August 2026

Top 25 Customer service outsourcing companies based in Brazil

Name: Customer service outsourcing companies based in Brazil
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 525 companies tracked

There are 525 customer service outsourcing companies headquartered in Brazil (RevenueBase, August 2026). RevenueBase tracks 166,807 professional contacts across them, including 9,747 with verified work emails and 770 with mobile numbers. Sao Paulo is the largest hub.

This list covers customer service outsourcing companies headquartered in Brazil, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

525Companies

166,807Contacts tracked

9,747Verified emails

770Mobile numbers

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The 25 largest customer service outsourcing companies based in Brazil

Ranked by team size

Top 25 of 525 customer service outsourcing companies based in Brazil, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Atento	Sao Paulo	10001+	77,086	4,111
2	AEC	Sao Paulo	10001+	20,081	2,568
3	Liderança Serviços	Sao Paulo	10001+	4,499	8
4	Callink	Uberlandia	5,001-10,000	4,137	331
5	Flex Relacionamentos Inteligentes	Sao Paulo	n/a	3,960	1
6	Vikstar Contact Center	Sao Paulo	10001+	3,912	68
7	Sercom	Taboao Da Serra	5,001-10,000	3,788	158
8	Plansul	Florianopolis	10001+	3,092	33
9	VGX Contact Center	Belo Horizonte	1,001-5,000	2,938	115
10	Grupo Contax	Sao Paulo	10001+	2,857	21
11	TAHTO	Campo Grande	10001+	2,568	371
12	Webhelp Onelink	Curitiba	10001+	2,250	421
13	Nova RIO	Macae	1,001-5,000	1,895	58
14	Grupo MAP	Salvador	10001+	1,437	1
15	DBM Contact Center	Curitiba	1,001-5,000	1,313	36
16	Parla Contact Center	Barueri	1,001-5,000	1,234	20
17	Alert Brasil	Porto Alegre	1,001-5,000	1,173	3
18	Logos Serviços	Sao Luis	1,001-5,000	1,161	33
19	Grupo Provac	Sao Carlos	5,001-10,000	962	7
20	Youtility Center DO Brasil	Barra Mansa	1,001-5,000	924	2
21	EMDIA	Sao Paulo	1,001-5,000	909	7
22	Vector	Fortaleza	1,001-5,000	700	3
23	5 Estrelas Special Service Limpeza E Serviços Auxiliares Ltda	Aparecida De Goiania	1,001-5,000	590	1
24	Transegur Vigilância E Segurança	Rio De Janeiro	1,001-5,000	533	6
25	ATN Contact Center	Rio De Janeiro	501-1,000	530	2

Showing 25 of 525 customer service outsourcing companies based in Brazil

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Customer service outsourcing companies based in Brazil at a glance

As of Aug 28, 2026

11-50Median size (employees)

Sao PauloLargest hub · 137 HQs

770Contacts with mobile numbers

18Emails re-verified in last 30 days

Companies by employee count

1-10

144

11-50

147

51-200

106

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Customer service outsourcing companies by metro

Metro	Companies
Customer service outsourcing companies in Sao Paulo	137
Customer service outsourcing companies in Rio De Janeiro	28
Customer service outsourcing companies in Belo Horizonte	18
Customer service outsourcing companies in Barueri	17
Customer service outsourcing companies in Porto Alegre	15
Customer service outsourcing companies in Curitiba	15
Customer service outsourcing companies in Fortaleza	11
Customer service outsourcing companies in Goiania	10

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “customer service outsourcing companies”, with match quality audited by blind human judging, and headquartered in Brazil.
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: Contact records re-verify on a rolling cadence; 18 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many customer service outsourcing companies are there based in Brazil?

There are 525 customer service outsourcing companies headquartered in Brazil as of August 2026 (RevenueBase).

What is the largest company on this list?

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

Which city has the most customer service outsourcing companies?

Sao Paulo leads with 137 headquartered companies, followed by Rio De Janeiro (28) and Belo Horizonte (18).

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 9,747 verified decision-maker contacts tracked across these 525 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.