Company lists · Data refreshed September 2026
Top 17 Out sourcing companies based in Sri Lanka
RevenueBase identified 138 out sourcing companies headquartered in Sri Lanka as of September 2026 and tracks 2,494 professional contacts across them, including 218 with verified work emails. Colombo is the largest hub.
This list covers out sourcing companies headquartered in Sri Lanka, 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 17 largest out sourcing companies based in Sri Lanka
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 279 contacts → | ||||
Indirect evidence “WNS (Holdings) Limited (NYSE:WNS),is a leading global Business Process Management (BPM) company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 137 contacts → | ||||
Indirect evidence “SAKS specializes in Business Process Management and Knowledge Process Management Services in key areas of Finance & Accounting, Process Automation, Data Science & AI, Mobility and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 106 contacts → | ||||
Indirect evidence “A leader in transforming business operations for the better through people, process, and technical brilliance.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 72 contacts → | ||||
Indirect evidence “Tellida (Pvt) Ltd is a global outsourcing company providing Legal Process Outsourcing (LPO), Finance & Accounting Outsourcing (FAO), Contact Centre services, and Remote Business…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 39 contacts → | ||||
Indirect evidence “Aventage Labs, a distinguished member of the renowned St.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 32 contacts → | ||||
Indirect evidence “Contact Center Solutions Provider” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 28 contacts → | ||||
Indirect evidence “Activ8 Asia is a leading Sri Lankan Business Process Outsourcing (BPO) and Customer Experience (CX) company delivering high-quality call center, contact center, customer support…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 26 contacts → | ||||
Indirect evidence “Techcess Business Solutions is a software development and BPO company focused on providing software solutions engineering and outsourcing services, enabling enterprises to focus…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 23 contacts → | ||||
Indirect evidence “At Make Stuff Happen, is a strategic offshore service partner dedicated to help our customers solve their challenging problems.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Indirect evidence “At Victoria Partners, we specialize in providing reliable and efficient back-office support services tailored to help businesses streamline their operations and drive growth.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Indirect evidence “Envic Global is a BPO located in Sri Lanka, providing comprehensive solutions for inbound and outbound sales, customer care, and back-office operations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 12 contacts → | ||||
Indirect evidence “Finplex Solution is an outsourcing services company in Sri Lanka.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 10 contacts → | ||||
Indirect evidence “Investlab Business Solutions is a innovative and modernized company based in Sri Lanka provide various professional services include Legal, Accounting and Finance, Expert Services…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 contacts → | ||||
Indirect evidence “Know Tech Solutions is a premier Business Process Outsourcing (BPO) company specializing in telemarketing and customer service support.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 contacts → | ||||
Indirect evidence “We are a multinational entity specializing in Business Process Management and Knowledge Process Management services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 contacts → | ||||
Indirect evidence “The Siren - Pug in to get noticed The Siren is a groundbreaking Business Process Outsourcing (BPO) company that was formed in 2020 to assist the marketing heads in companies to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1 contacts → | ||||
Indirect evidence “IT consulting and outsourced services” 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: out sourcing 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 out sourcing companies.
- Partial evidence
- Its own public description names part of out sourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name out sourcing 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 17 of 138 out sourcing companies based in Sri Lanka
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Out sourcing companies based in Sri Lanka at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Sri Lanka, so it is reported there. Company counts and contact totals on this page are exact for Sri Lanka, over 138 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 out sourcing 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 Sri Lanka whose own description of what they do matches “out sourcing 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 out sourcing 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 out sourcing companies, and records with no verified work email. Companies headquartered outside Sri Lanka 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, 218 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.
Out sourcing companies by metro
- Out sourcing companies in Colombo62
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 out sourcing 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 out sourcing companies are there based in Sri Lanka?
RevenueBase identified 138 out sourcing companies headquartered in Sri Lanka 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?
WNS Global Services SRI Lanka, headquartered in Sri Lanka, tops this list with the largest team on record.
Which city has the most out sourcing companies?
Colombo leads with 62 headquartered companies, followed by Nugegoda (4) and Gampaha (3).
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 218 verified decision-maker contacts tracked across these 138 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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