The publicly traded companies in Gyeonggi are primarily large corporations with a strong focus on technology, manufacturing, and IT services. Samsung Electronics, a global technology leader, innovates in various electronics. NAVER Corp offers a wide range of ICT services, from search portals to AI. Samsung SDI develops and produces innovative technology products, while HL Mando specializes in automotive parts. NC is a global game developer, and Hankook Tire manufactures high-quality tires.
A notable pattern among these companies is their significant presence in Seongnam-Si, which hosts several major players including NAVER Corp, HL Mando, NHN, and Hankook Tire. This indicates a concentration of large-scale technology and manufacturing operations within this specific city.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Samsung Electronicssamsung.com
A global technology leader, constantly innovating in TVs, smartphones, wearables, appliances, medical devices, and more Embracing diversity and creativity for growth |
287,000 | |||
| 2 |
NAVER Corpnavercorp.com
A global ICT company offering search portal, messenger, camera app, webtoon, metaverse platform, AI, robotics, and mobility innovations for shared growth |
5,121 | |||
| 3 |
Samsung SDIsamsungsdi.com
Development and production of innovative technology products with cutting-edge features, focusing on creativity and continuous improvement since 1970. |
4,080 | |||
| 4 |
HL Mandohlmando.com
A leading automotive parts company focused on developing cutting-edge technology and quality parts for safe vehicles on a global scale |
3,561 | |||
| 5 |
Hankook Tirehankooktire.com
Manufacture and supply high-quality tires globally, focusing on innovation, premium brands, and sustainable ESG management practices. |
2,083 | |||
| 6 | 1,468 | ||||
| 7 |
Hyundai Rotemhyundai-rotem.co.kr
A diversified company within Hyundai Motor Group providing innovative and sustainable mobility solutions in the railway, defense, and plant & machinery systems sectors globally |
1,442 | |||
| 8 |
삼성중공업samsungshi.com
A global leader in shipbuilding and offshore EPC projects, specializing in high-tech vessels like drillships, LNG carriers, FPSOs, and Arctic tankers |
1,423 | |||
| 9 |
카카오뱅크 Kakaobankkakaobank.com
A bank that started for individuals, now for everyone Changing the way people send, receive, collect, and spend money Offering various job opportunities |
1,148 | |||
| 10 |
카카오페이 (kakaopay)kakaopay.com
Revolutionizing financial services by providing convenient, safe, and diverse offerings, transforming traditional finance into a seamless and effortless experience for all |
1,004 | |||
| 11 |
POSCO DXposcodx.com
A leading provider of total smart industry IT solutions, POSCO ICT offers engineering, automation, system integration, and IT outsourcing services with a focus on green growth and innovation |
844 | |||
| 12 |
AhnLab, Inc.ahnlab.com
A global cybersecurity company founded in 1995, offering comprehensive protection for endpoints, networks, transactions, and essential services with best-of-breed threat prevention |
704 | |||
| 13 |
GC Biopharma (GC녹십자)gcbiopharma.com
Biopharmaceutical company based in South Korea specializing in protein therapeutics and vaccines, with a focus on quality healthcare solutions for over 50 years |
660 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 14 |
WEMADEwemade.com
A leading game company in South Korea, creating innovative games and leading the way in blockchain technology, NFT, Defi, and metaverse investments |
396 | |||
| 15 |
Rayraymedical.com
A global leader in dental imaging solutions, Ray Co, Ltd specializes in CBCT technology and digital dentistry products for global markets |
378 | |||
| 16 |
HD Korea Shipbuilding & Offshore Engineering Co., Ltd. (HD KSOE)hdksoe.co.kr
A shipbuilding business cluster focused on becoming a technology-oriented company with world-class R&D and engineering capabilities in the marine mobility industry |
367 | |||
| 17 |
Intellian Technologiesintelliantech.com
A global leader in satellite antenna systems, providing connectivity solutions for various industries, focusing on simplicity, innovation, and customer satisfaction |
348 | |||
| 18 |
HD Hyundai Electric Co., Ltd.hd-hyundaielectric.com
A global provider in heavy electrical machinery, transitioning to digital solutions for the evolving power market with focus on ICT convergence and smart factory initiatives |
342 | |||
| 19 |
Pearl Abysspearlabyss.com
Global game developer creating extraordinary gameplay experiences with Black Desert MMORPG franchise, serving 40 million users worldwide on PC, mobile, and console |
314 | |||
| 20 |
Huons Globalhuonsglobal.com
A leading healthcare group with a focus on pharmaceuticals, medical devices, health functional foods, and ESG sustainability practices for a better future |
308 | |||
| 21 | 283 | ||||
| 22 |
Kakao Gamesrecruit.kakaogames.com
A global game publisher with a diverse portfolio catering to all ages, known for titles like Black Desert Online, Path of Exile, and PUBG |
219 | |||
| 23 |
HK inno-ninno-n.com
A leading pharmaceutical firm established in 1984, specializing in prescription drugs, active pharmaceutical ingredients, health supplements, and beauty products Committed to innovation and global growth |
213 | |||
| 24 |
Woongjin Thinkbig Co., Ltdcompany.wjthinkbig.com
A company in Korea focuses on educational innovation and creating new values to meet the educational needs of children |
135 | |||
| 25 |
Kakao Games Corpkakaogames.com
A South Korean multi-platform game publisher and developer known for Black Desert Online and PlayerUnknown's Battlegrounds, striving to create exceptional gaming experiences |
101 | |||
| 26 |
Global ZEUS (ZEUS Co., Ltd.)globalzeus.com
The company provides high-quality solutions for the Semiconductor, Automation, LCD, LED, renewable energy, and IT industries through innovative products and exceptional customer support |
44 | |||
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Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
More company lists in Gyeonggi
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- Companies with in-house R&D in Gyeonggi 56
- Multinational companies in Gyeonggi 55
- Manufacturers in Gyeonggi 43
- Hardware manufacturers in Gyeonggi 31
- IT Services and IT Consulting companies in Gyeonggi 31
- Companies with a mobile app in Gyeonggi 30