Company lists · Data refreshed September 2026
Top 25 Outsource companies based in Vietnam
RevenueBase identified 209 outsource companies headquartered in Vietnam as of September 2026 and tracks 5,988 professional contacts across them, including 327 with verified work emails. Hanoi is the largest hub.
This list covers outsource companies headquartered in Vietnam, 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.
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.
The 25 largest outsource companies based in Vietnam
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 421 contacts → | ||||
Strong evidence “transcosmos Vietnam Co, Ltd, 100% Japanese-invested company, focuses on a variety of services on Call Center, BPO (Business Process Outsourcing), Business Intelligence, Digital…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 365 contacts → | ||||
Indirect evidence “Global IT player born in Vietnam (2006)#270Members #PeopleMagic Get brochure: https://demo.officience.com/brochure Officience is a French-Vietnamese which has pioneered in the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 259 contacts → | ||||
Indirect evidence “Established in 2005, ExperTrans Global is a leading company in term of globalization solution service.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 220 contacts → | ||||
Strong evidence “S3 Corporation is a leading software outsourcing service provider based in Vietnam.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 218 contacts → | ||||
Indirect evidence “Headhunting & Executive Search Service in IT and Non-IT sectors.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 184 contacts → | ||||
Strong evidence “LTS Group is a dedicated IT outsourcing services provider headquartered in Vietnam with subsidiaries in Japan & the United States.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 178 contacts → | ||||
Indirect evidence “Titan Technology Corporation (Titan) is an incorporated company founded in 2013.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 161 contacts → | ||||
Indirect evidence “EVOLABLE ASIA is a leading Japanese software development company in South-East Asia, and worldwide in the near future.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 153 contacts → | ||||
Indirect evidence “Dear Clients, Found in 2002, NIC Human Resources Consulting JSC was regarded as the first tier of HR Solutions in Vietnam and has been recognizing as the leading service provider…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 130 contacts → | ||||
Strong evidence “PUNGKOOK SAIGON II is an Outsourcing/Offshoring company located in 2A Road 8, Song Than Industrial Park, Binh Duong, Binh Dinh Province, Viet Nam.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 125 contacts → | ||||
Indirect evidence “Restaff – House of Norway, is a distinguished leader in custom software development services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 109 contacts → | ||||
Indirect evidence “Eastgate Software is a Vietnamese software development company with local consulting departments in Germany, Japan, and Vietnam.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 76 contacts → | ||||
Indirect evidence “Enlab is a dedicated offshore software development company, providing enterprise applications with top-notch quality in every Agile delivery.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 70 contacts → | ||||
Strong evidence “Founded in 2005, QSoft aims to provide clients with a seamless and worry-free outsourcing journey.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 68 contacts → | ||||
Indirect evidence “3S wants to contribute its unique value to the Software Out-sourcing/Off-shoring Service Industry in Vietnam and creating more choices for customers to quickly find a reliable…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 48 contacts → | ||||
Indirect evidence “Gleads được hình thành với sứ mệnh hỗ trợ các công ty, doanh nghiệp nâng tầm thương hiệu quốc tế và tiếp cận đến người tiêu dùng trên khắp thế giới.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 45 contacts → | ||||
Strong evidence “Since 2012, Remote Resources delivers offshore staffing and outsourcing solutions to boost your growth, flexibility and profitability.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 33 contacts → | ||||
Strong evidence “Ascension 6 is a leading outsourcing company specializing in providing staffing solutions with expertise in Engineering Design, and BPO.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 30 contacts → | ||||
Strong evidence “About Us • Politetech is one of the top software outsourcing companies in Vietnam • With the latest IT technologies.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 21 contacts → | ||||
Strong evidence “YouthDev is high tech solution and outsourcing company which focus mostly on taking new technologies or ideas into effect.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 17 contacts → | ||||
Strong evidence “TVT GROUP is providing the software outsourcing and staffing services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 16 contacts → | ||||
Indirect evidence “Simplify Dalat operates on the mission of bringing opportunities for all - CUSTOMERS, EMPLOYEES and COMMUNITY.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 16 contacts → | ||||
Strong evidence “Beework.ai is an AI Data Outsourcing company in Vietnam.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 15 contacts → | ||||
Strong evidence “Pure Moderation - a brand of Gear Pure Moderation is a global business process outsourcing vendor specializing in a range of services based in Vietnam, Laos, Indonesia, Thailand…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 14 contacts → | ||||
Strong evidence “Niem Tin Viet Telecom Company (NTV) earns a high reputation in providing outsourcing services including solutions and customer care service in Vietnam market.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
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: outsource companies. 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 outsource companies.
- Partial evidence
- Its own public description names part of outsource companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name outsource companies. 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 209 outsource companies based in Vietnam
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Outsource companies based in Vietnam at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Vietnam, so it is reported there. Company counts and contact totals on this page are exact for Vietnam, over 209 companies.
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 outsource companies, 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.
- What qualifies
- Companies headquartered in Vietnam whose own description of what they do matches “outsource companies”. 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 outsource companies), 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 outsource companies, and records with no verified work email. Companies headquartered outside Vietnam are excluded even when they keep an office there.
- 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, 327 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.
Outsource companies by metro
- Outsource companies in Hanoi48
- Outsource companies in Ho Chi Minh39
- Outsource companies in Ho Chi Minh City35
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 outsource companies, 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 outsource companies are there based in Vietnam?
RevenueBase identified 209 outsource companies headquartered in Vietnam 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?
Transcosmos Vietnam Co., LTD, headquartered in Noi Ho Chi Minh, tops this list with the largest team on record.
Which city has the most outsource companies?
Hanoi leads with 48 headquartered companies, followed by Ho Chi Minh (39) and Ho Chi Minh City (35).
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 327 verified decision-maker contacts tracked across these 209 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.
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