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.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Hyundai Motor Companyhyundai.com
Global automotive company producing millions of vehicles annually, focusing on clean energy, connected technology, and human-centered mobility solutions. |
66,571 | |||
| 2 |
LG Electronicslg.com
This company provides products and services aimed at improving lives through innovation in home appliances, electronics, digital signage, and more |
64,886 | |||
| 3 |
Doosandoosan.com
A global company specializing in building power plants, industrial facilities, machine tools, engines, bridges, construction equipment, and consumer products |
42,000 | |||
| 4 |
Samsung SDSsamsungsds.com
Delivers specialized cloud platforms, digital logistics management, and SaaS solutions to optimize business environments and drive industrial innovation through global IT expertise. |
15,040 | |||
| 5 |
Hyundai Engineering & Construction Co.,Ltd.en.hdec.kr
A leading South Korean construction company specializing in civil engineering, architecture, power plants, and nuclear power stations, focusing on improving life quality through innovation |
13,577 | |||
| 6 |
Samsung C&T Corporationsamsungcnt.com
An international corporation offering services and products in over 50 countries, specializing in engineering & construction, trading & investment, fashion, and resort |
9,942 | |||
| 7 |
Hyundai MOBISmobis.com
Specializing in automotive technology, we are a leading supplier of parts worldwide, with a focus on software and system solutions for future mobility |
8,509 | |||
| 8 |
LG Energy Solutionlgensol.com
A leading company in eco-friendly energy solutions, specializing in distinctive materials and next-generation batteries for EVs and energy storage systems |
7,463 | |||
| 9 |
Hanwha Grouphanwha.com
Global diversified business group specializing in energy, aerospace, finance, retail, and services with a strong focus on sustainability and innovation. |
7,341 | |||
| 10 | 7,117 | ||||
| 11 |
LG Displaylgdisplay.com
Manufacturing display panels for TVs, computers, automobiles, tablets, and mobile devices in facilities across Korea, China, and Vietnam. |
6,139 | |||
| 12 |
LG Chemlgchem.com
A global chemical company specializing in petrochemicals, advanced materials, and life sciences, committed to carbon-neutral growth and net-zero emissions by 2050 |
5,545 | |||
| 13 |
Daewoo Engineering & Construction Co.,Ltd.daewooenc.com
A global construction innovator committed to changing the world with market-leading technologies, creating impactful projects worldwide for a brighter future |
5,515 | |||
| 14 |
Hanyang Universityhanyang.ac.kr
Private research university in South Korea with campuses in Seoul and Ansan Known for engineering, architecture, CEO alumni, and international student enrollment |
3,920 | |||
| 15 |
SK Innovationskinnovation.com
SK Innovation is a leading energy company focused on sustainable technologies, oil refining, petrochemicals, electric vehicle batteries, and global material solutions |
3,906 | |||
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. | |||||
| 16 |
AMOREPACIFICapgroup.com
Established in 1945, this leading Korean beauty conglomerate operates numerous brands in beauty, personal care, and health care industries |
3,746 | |||
| 17 |
Korean Airkoreanair.com
Operating a modern fleet, serving 120 cities globally, providing passenger and cargo air transport with high safety and service standards. |
3,648 | |||
| 18 | 3,553 | ||||
| 19 |
LG Innoteklginnotek.com
A global materials and components company innovating for various industries with products like camera modules, display substrates, semiconductor packages, and Industry 40 technologies |
3,387 | |||
| 20 |
SKskcareers.com
A diverse collection of multinational manufacturing and service companies united under a holding structure, sharing a common brand and culture for growth and prosperity |
3,317 | |||
| 21 |
SK Engineering & Construction Co. Ltdskecoplant.com
A company established in 1977, focused on sustainable growth, stability, and achieving happiness for humanity through consistent efforts |
3,256 | |||
| 22 | 3,240 | ||||
| 23 | 3,216 | ||||
| 24 |
LX Pantoslxpantos.com
Global logistics company offering forwarding, contract logistics, e-commerce logistics, express delivery, and supply chain management consulting services. |
3,190 | |||
| 25 |
Shinhan Bankshinhan.com
A leading South Korean bank offering retail, corporate, and investment banking services to millions of customers domestically and across multiple countries |
3,147 | |||
| 26 |
Cheil Worldwidecheil.com
A global agency specializing in performance-driven marketing, connecting creativity, data, tech, and retail to enhance business performance and consumer brand experience |
3,067 | |||
| 27 |
DL E&C Co., Ltddlenc.co.kr
A global construction company with over 80 years of experience, specializing in infrastructure projects, development, and ecofriendly initiatives such as CCUS and clean energy |
2,882 | |||
| 28 |
Kia Worldwideworldwide.kia.com
The company believes movement inspires ideas and creates sustainable mobility solutions, products, stores, and services to free up time for activities |
2,778 | |||
| 29 |
Sungkyunkwan Universityskku.edu
A top-ranking private university in Korea focusing on nurturing students' soft skills, supported by Samsung for academic and research advancements |
2,605 | |||
| 30 |
KOTRAkotra.or.kr
A dedicated agency in Korea focused on expanding export markets, supporting Korean companies overseas, and promoting globalization of SMEs |
2,595 | |||
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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.
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