# Multinational companies headquartered in Seoul

Tamtam tracks 150 multinational companies headquartered in Seoul. This list ranks the 30 largest by number of employees on LinkedIn, led by Hyundai Motor Company, LG Electronics and Doosan. Their median headcount is 3,906. Half of them were founded in 1969 or later.

These multinational companies in Seoul represent a diverse industrial landscape, with a notable concentration in manufacturing, particularly in the automotive and electronics sectors, as well as significant presence in construction and IT services. The companies listed are primarily large corporations with substantial employee numbers.

Key players include Hyundai Motor Company, a global automotive company focused on clean energy and mobility solutions; LG Electronics, which innovates in home appliances and electronics; Doosan, specializing in industrial facilities and construction equipment; and Samsung SDS, delivering cloud platforms and IT solutions. Many of these companies, like Hyundai Engineering & Construction Co.,Ltd. and LG Chem, were founded in the mid-20th century, indicating a period of significant industrial growth.

🇰🇷 Seoul · 30 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Hyundai Motor Company](https://www.tamtam.ai/c/hyundai-motor-company) (hyundai.com)<br>Global automotive company producing millions of vehicles annually, focusing on clean energy, connected technology, and human-centered mobility solutions. | Motor Vehicle Manufacturing | 🇰🇷 Seoul | 66,571 |  |
| 2 | [LG Electronics](https://www.tamtam.ai/c/lg-electronics) (lg.com)<br>This company provides products and services aimed at improving lives through innovation in home appliances, electronics, digital signage, and more | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 64,886 |  |
| 3 | [Doosan](https://www.tamtam.ai/c/doosan) (doosan.com)<br>A global company specializing in building power plants, industrial facilities, machine tools, engines, bridges, construction equipment, and consumer products | Industrial Machinery Manufacturing | 🇰🇷 Seoul | 42,000 | 1896 |
| 4 | [Samsung SDS](https://www.tamtam.ai/c/samsung-sds) (samsungsds.com)<br>Delivers specialized cloud platforms, digital logistics management, and SaaS solutions to optimize business environments and drive industrial innovation through global IT expertise. | IT Services and IT Consulting | 🇰🇷 Seoul | 15,040 |  |
| 5 | [Hyundai Engineering & Construction Co.,Ltd.](https://www.tamtam.ai/c/hyundai-engineering-and-construction-co-ltd) (en.hdec.kr)<br>A leading South Korean construction company specializing in civil engineering, architecture, power plants, and nuclear power stations, focusing on improving life quality through innovation | Construction | 🇰🇷 Seoul | 13,577 | 1947 |
| 6 | [Samsung C&T Corporation](https://www.tamtam.ai/c/samsung-c-and-t-corporation) (samsungcnt.com)<br>An international corporation offering services and products in over 50 countries, specializing in engineering & construction, trading & investment, fashion, and resort | Construction | 🇰🇷 Seoul | 9,942 | 1938 |
| 7 | [Hyundai MOBIS](https://www.tamtam.ai/c/hyundai-mobis) (mobis.com)<br>Specializing in automotive technology, we are a leading supplier of parts worldwide, with a focus on software and system solutions for future mobility | Motor Vehicle Manufacturing | 🇰🇷 Seoul | 8,509 | 1977 |
| 8 | [LG Energy Solution](https://www.tamtam.ai/c/lg-energy-solution) (lgensol.com)<br>A leading company in eco-friendly energy solutions, specializing in distinctive materials and next-generation batteries for EVs and energy storage systems | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 7,463 |  |
| 9 | [Hanwha Group](https://www.tamtam.ai/c/hanwha-group) (hanwha.com)<br>Global diversified business group specializing in energy, aerospace, finance, retail, and services with a strong focus on sustainability and innovation. | Chemical Manufacturing | 🇰🇷 Seoul | 7,341 |  |
| 10 | [GS E&C](https://www.tamtam.ai/c/gs-e-and-c) (gsenc.com)<br>A global contractor specializing in civil engineering, building, oil & gas, power plants, and renewable energy to provide premier design and construction services | Construction | 🇰🇷 Seoul | 7,117 | 1969 |
| 11 | [LG Display](https://www.tamtam.ai/c/lg-display) (lgdisplay.com)<br>Manufacturing display panels for TVs, computers, automobiles, tablets, and mobile devices in facilities across Korea, China, and Vietnam. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 6,139 | 1987 |
| 12 | [LG Chem](https://www.tamtam.ai/c/lg-chem) (lgchem.com)<br>A global chemical company specializing in petrochemicals, advanced materials, and life sciences, committed to carbon-neutral growth and net-zero emissions by 2050 | Chemical Manufacturing | 🇰🇷 Seoul | 5,545 | 1947 |
| 13 | [Daewoo Engineering & Construction Co.,Ltd.](https://www.tamtam.ai/c/daewoo-engineering-and-construction-co-ltd) (daewooenc.com)<br>A global construction innovator committed to changing the world with market-leading technologies, creating impactful projects worldwide for a brighter future | Construction | 🇰🇷 Seoul | 5,515 | 1973 |
| 14 | [Hanyang University](https://www.tamtam.ai/c/hanyang-university) (hanyang.ac.kr)<br>Private research university in South Korea with campuses in Seoul and Ansan Known for engineering, architecture, CEO alumni, and international student enrollment | Higher Education | 🇰🇷 Seoul | 3,920 |  |
| 15 | [SK Innovation](https://www.tamtam.ai/c/sk-innovation) (skinnovation.com)<br>SK Innovation is a leading energy company focused on sustainable technologies, oil refining, petrochemicals, electric vehicle batteries, and global material solutions | Oil and Gas | 🇰🇷 Seoul | 3,906 | 1962 |
| 16 | [AMOREPACIFIC](https://www.tamtam.ai/c/amorepacific) (apgroup.com)<br>Established in 1945, this leading Korean beauty conglomerate operates numerous brands in beauty, personal care, and health care industries | Personal Care Product Manufacturing | 🇰🇷 Seoul | 3,746 | 1945 |
| 17 | [Korean Air](https://www.tamtam.ai/c/korean-air) (koreanair.com)<br>Operating a modern fleet, serving 120 cities globally, providing passenger and cargo air transport with high safety and service standards. | Airlines and Aviation | 🇰🇷 Seoul | 3,648 | 1969 |
| 18 | [HMM](https://www.tamtam.ai/c/hmm) (hmm21.com)<br>Global logistics company providing integrated services through a large fleet, worldwide networks, and expert professionals to lead in shipping industry | Maritime Transportation | 🇰🇷 Seoul | 3,553 | 1976 |
| 19 | [LG Innotek](https://www.tamtam.ai/c/lg-innotek) (lginnotek.com)<br>A global materials and components company innovating for various industries with products like camera modules, display substrates, semiconductor packages, and Industry 40 technologies | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 3,387 | 1970 |
| 20 | [SK](https://www.tamtam.ai/c/sk-341140) (skcareers.com)<br>A diverse collection of multinational manufacturing and service companies united under a holding structure, sharing a common brand and culture for growth and prosperity | Telecommunications | 🇰🇷 Seoul | 3,317 | 1953 |
| 21 | [SK Engineering & Construction Co. Ltd](https://www.tamtam.ai/c/sk-engineering-and-construction-co-ltd) (skecoplant.com)<br>A company established in 1977, focused on sustainable growth, stability, and achieving happiness for humanity through consistent efforts | Oil and Gas | 🇰🇷 Seoul | 3,256 | 1977 |
| 22 | [Toss](https://www.tamtam.ai/c/toss) (toss.im)<br>A fintech company in South Korea aiming to revolutionize the financial industry by providing innovative and user-friendly financial services to make banking simple and convenient | Financial Services | 🇰🇷 Seoul | 3,240 |  |
| 23 | [Engoo](https://www.tamtam.ai/c/engoo) (engoo.com)<br>Global provider of engaging 1-on-1 language lessons via a platform integrated with original materials, connecting people worldwide through language learning | E-Learning Providers | 🇰🇷 Seoul | 3,216 | 2013 |
| 24 | [LX Pantos](https://www.tamtam.ai/c/lx-pantos) (lxpantos.com)<br>Global logistics company offering forwarding, contract logistics, e-commerce logistics, express delivery, and supply chain management consulting services. | Transportation, Logistics, Supply Chain and Storage | 🇰🇷 Seoul | 3,190 | 1977 |
| 25 | [Shinhan Bank](https://www.tamtam.ai/c/shinhan-bank) (shinhan.com)<br>A leading South Korean bank offering retail, corporate, and investment banking services to millions of customers domestically and across multiple countries | Financial Services | 🇰🇷 Seoul | 3,147 | 1982 |
| 26 | [Cheil Worldwide](https://www.tamtam.ai/c/cheil-worldwide) (cheil.com)<br>A global agency specializing in performance-driven marketing, connecting creativity, data, tech, and retail to enhance business performance and consumer brand experience | Advertising Services | 🇰🇷 Seoul | 3,067 | 1973 |
| 27 | [DL E&C Co., Ltd](https://www.tamtam.ai/c/dl-e-and-c-co-ltd) (dlenc.co.kr)<br>A global construction company with over 80 years of experience, specializing in infrastructure projects, development, and ecofriendly initiatives such as CCUS and clean energy | Construction | 🇰🇷 Seoul | 2,882 | 1939 |
| 28 | [Kia Worldwide](https://www.tamtam.ai/c/kia-worldwide) (worldwide.kia.com)<br>The company believes movement inspires ideas and creates sustainable mobility solutions, products, stores, and services to free up time for activities | Motor Vehicle Manufacturing | 🇰🇷 Seoul | 2,778 |  |
| 29 | [Sungkyunkwan University](https://www.tamtam.ai/c/sungkyunkwan-university) (skku.edu)<br>A top-ranking private university in Korea focusing on nurturing students' soft skills, supported by Samsung for academic and research advancements | Higher Education | 🇰🇷 Seoul | 2,605 | 1398 |
| 30 | [KOTRA](https://www.tamtam.ai/c/kotra) (kotra.or.kr)<br>A dedicated agency in Korea focused on expanding export markets, supporting Korean companies overseas, and promoting globalization of SMEs | International Trade and Development | 🇰🇷 Seoul | 2,595 |  |

## How this list is built

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 Seoul

- [The largest companies in Seoul](https://www.tamtam.ai/l/largest-companies-seoul) (418)
- [Companies with in-house R&D in Seoul](https://www.tamtam.ai/l/r-and-d-companies-seoul) (88)
- [Manufacturers in Seoul](https://www.tamtam.ai/l/manufacturers-seoul) (70)
- [Companies with a mobile app in Seoul](https://www.tamtam.ai/l/companies-with-mobile-app-seoul) (62)
- [Publicly traded companies in Seoul](https://www.tamtam.ai/l/publicly-traded-companies-seoul) (61)
- [Corporate groups and holding companies in Seoul](https://www.tamtam.ai/l/holding-companies-seoul) (59)
- [IT Services and IT Consulting companies in Seoul](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-seoul) (57)
- [Financial services firms in Seoul](https://www.tamtam.ai/l/financial-services-firms-seoul) (49)
- [Hardware manufacturers in Seoul](https://www.tamtam.ai/l/hardware-companies-seoul) (42)
- [Retail chains in Seoul](https://www.tamtam.ai/l/retail-chains-seoul) (39)
- [Critical infrastructure operators in Seoul](https://www.tamtam.ai/l/critical-infrastructure-operators-seoul) (36)
- [Education providers in Seoul](https://www.tamtam.ai/l/education-companies-seoul) (30)
- [Financial Services companies in Seoul](https://www.tamtam.ai/l/financial-services-companies-seoul) (28)
- [AI companies in Seoul](https://www.tamtam.ai/l/ai-companies-seoul) (26)

## The same list elsewhere in South Korea

- [Multinational companies in South Korea](https://www.tamtam.ai/l/multinational-companies-south-korea) (299)
- [Multinational companies in Gyeonggi](https://www.tamtam.ai/l/multinational-companies-gyeonggi) (55)

## The same list elsewhere

- [Multinational companies in the world](https://www.tamtam.ai/l/multinational-companies-in-the-world) (74,925)
- [Multinational companies in Asia](https://www.tamtam.ai/l/multinational-companies-in-asia) (7,275)

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Source: https://www.tamtam.ai/l/multinational-companies-seoul