Company lists · Data verified August 2026
Top 16 Contact centers based in Portugal
There are 40 contact centers headquartered in Portugal (RevenueBase, August 2026). RevenueBase tracks 36,927 professional contacts across them, including 1,905 with verified work emails and 2,714 with mobile numbers. Lisboa is the largest hub.
This list covers contact centers headquartered in Portugal, 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.
The 16 largest contact centers based in Portugal
Ranked by team size| # | Company | Verified emails |
|---|---|---|
| 1 |  Sitel Group | 1,753 |
| 2 |  Leverage Contact Center | 1 |
| 3 |  Connecta Group | 25 |
| 4 |  Ventask | 16 |
| 5 | Teleperformance Portugal | 27 |
| 6 |  Pluricall | 14 |
| 7 |  Collab | 24 |
| 8 |  Transcom | 3 |
| 9 |  Salt Services SA | 16 |
| 10 |  GO Connection | 10 |
| 11 |  Ganira | 4 |
| 12 |  Grupês Telecomunicações, LDA | 5 |
| 13 |  Call Center 24h | 1 |
| 14 |  Calleebree | 4 |
| 15 |  Ubinaweb | 1 |
| 16 |  Grupo Multi Contact | 1 |
Showing 16 of 40 contact centers based in Portugal
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Contact centers based in Portugal at a glance
As of Aug 28, 2026Companies by employee count
Contact centers by metro
| Metro | Companies |
|---|---|
| Contact centers in Lisboa | 13 |
| Contact centers in Lisbon | 8 |
| Contact centers in Porto | 6 |
| Contact centers in Alcabideche | 2 |
| Contact centers in Braga | 2 |
| Contact centers in Alges | 1 |
| Contact centers in Parede Parede | 1 |
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 “contact centers”, with match quality audited by blind human judging, and headquartered in Portugal.
- 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; 2 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 contact centers are there based in Portugal?
There are 40 contact centers headquartered in Portugal as of August 2026 (RevenueBase).
What is the largest company on this list?
Sitel Group, headquartered in Porto, tops this list with the largest team on record.
Which city has the most contact centers?
Lisboa leads with 13 headquartered companies, followed by Lisbon (8) and Porto (6).
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 1,905 verified decision-maker contacts tracked across these 40 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.