Company lists · Data refreshed September 2026
Top 25 Fab foundries worldwide
RevenueBase identified 1,390 fab foundries worldwide as of September 2026 and tracks 158,489 professional contacts across them, including 37,148 with verified work emails. China is the largest market and Singapore the largest hub.
This list covers fab foundries 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 19, 2026. Country and city lists for fab foundries 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.
The 25 largest fab foundries worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 19,251 contacts → | ||||
Indirect evidence “Established in 1987, TSMC is the world's first dedicated semiconductor foundry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14,686 contacts → | ||||
Indirect evidence “Lam Research Corp.(NASDAQ:LRCX) At Lam Research, we create equipment that drives technological advancements in the semiconductor industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 12,672 contacts → | ||||
Indirect evidence “KLA develops industry-leading equipment and services that enable innovation throughout the electronics industry.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,435 contacts → | ||||
Indirect evidence “Amkor Technology, Inc.(Nasdaq: AMKR) is the world’s largest U.S-headquartered OSAT and is a global leader in outsourced semiconductor packaging and test services.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5,687 contacts → | ||||
Indirect evidence “At ASM, we’re shaping the future at the atomic level.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,554 contacts → | ||||
Indirect evidence “United Microelectronics Corporation (NYSE: UMC, TWSE: 2303) is a leading global semiconductor foundry with over four decades of innovation powering everyday technologies that…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,506 contacts → | ||||
Indirect evidence “Have you made a call with your mobile phone today?” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,293 contacts → | ||||
Indirect evidence “ASE (Advanced Semiconductor Engineering, Inc), a member of ASE Technology Holdings (NYSE:ASX) is one of the world's largest providers of outsourced semiconductor manufacturing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,888 contacts → | ||||
Indirect evidence “Tessolve offers a unique combination of pre-silicon and post-silicon expertise to provide an efficient turnkey solution for silicon bring-up, and spec to the product.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,812 contacts → | ||||
Indirect evidence “Since its founding in 1963, TEL has grown to encompass many offices around the world that engineer, manufacture, sell, and service wafer-processing or semiconductor production…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,310 contacts → | ||||
Indirect evidence “Through strength, persistence, and adaptability, Realtek follows in the spirit of the crab.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 2,287 contacts → | ||||
Indirect evidence “UltraClean Holdings, Inc.(UCT) is a global leader in semiconductor fabrication support.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,092 contacts → | ||||
Indirect evidence “STATS ChipPAC is the world’s leading semiconductor back-end manufacturing and technology services provider, offering a full range of turnkey services that include semiconductor…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 2,011 contacts → | ||||
Indirect evidence “Please consider following the page of Infineon - as we are now Infineon -).” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,710 contacts → | ||||
Indirect evidence “Kulicke & Soffa is a global leader in semiconductor assembly technology, advancing device performance across automotive, compute, industrial, memory and communications markets.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 1,613 contacts → | ||||
Indirect evidence “UTAC Holdings Ltd (“UTAC”) is a leading independent provider of assembly and test services for a broad range of integrated circuits with diversified end uses, including…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 1,322 contacts → | ||||
Partial evidence “X-FAB is a global foundry group providing a comprehensive set of specialty technologies and design IP to enable its customers to develop world-leading semiconductor products that…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,318 contacts → | ||||
Indirect evidence “Tower Semiconductor the leading foundry of high-value analog semiconductor solutions, specializes in manufacturing analog ICs for more than 300 customers worldwide in growing…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,253 contacts → | ||||
Indirect evidence “ASMPT is the leading global supplier of hardware and software solutions for semiconductor and electronics manufacturing.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,221 contacts → | ||||
Indirect evidence “Siltronic AG is one of the world’s leading providers of high-tech wafer solutions made from hyperpure silicon and a recognized technology leader in the design and manufacturing of…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,200 contacts → | ||||
Indirect evidence “Established in May 1984, Siliconware Precision Industries Co, Ltd.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,186 contacts → | ||||
Indirect evidence “Onto Innovation is a leader in process control, combining global scale with an expanded portfolio of leading-edge technologies that include: Un-patterned wafer quality; 3D…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,109 contacts → | ||||
Indirect evidence “Unisem is a global provider of semiconductor assembly and test (OSAT) services for many of the world's most successful electronics companies.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,049 contacts → | ||||
Indirect evidence “Vanguard International Semiconductor Corporation (VIS) is a leading specialty IC foundry service provider.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 820 contacts → | ||||
Indirect evidence “EV Group (EVG) is a leading supplier of equipment and process solutions for the manufacture of semiconductors, microelectromechanical systems (MEMS), compound semiconductors…” Source: RevenueBase Database · checked Sep 19, 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: fab foundries. 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 fab foundries.
- Partial evidence
- Its own public description names part of fab foundries, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name fab foundries. 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 1,390 fab foundries worldwide
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Fab foundries worldwide at a glance
As of Sep 19, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 fab foundries, 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
- Every country. Country and city lists for fab foundries are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “fab foundries”. 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 fab foundries), 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 fab foundries, 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, 37,148 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 19, 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.
Fab foundries by location
9 lists · largest firstEvery Fab foundries list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Fab foundries based in China298
- Fab foundries based in the United States247
- Fab foundries based in India93
- Fab foundries based in Germany52
- Fab foundries based in Taiwan50
- Fab foundries based in Brazil42
- Fab foundries based in Singapore41
- Fab foundries based in the United Kingdom33
- Fab foundries based in Malaysia29
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 fab foundries, 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 fab foundries are there worldwide?
RevenueBase identified 1,390 fab foundries 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?
TSMC, headquartered in Hsinchu, tops this list with the largest team on record.
Which country has the most fab foundries?
China leads with 298 companies, followed by the United States (247) and India (93). Every fab foundries list by country and city is linked on this page.
Which city has the most fab foundries?
Singapore leads with 36 headquartered companies, followed by Bangalore (22) and San Jose (15).
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 37,148 verified decision-maker contacts tracked across these 1,390 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 19, 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.