These Seoul-based companies are primarily large hardware manufacturers, with a strong focus on electronics, automotive components, and industrial machinery. Key players include LG Electronics, which innovates in home appliances and digital signage; Doosan, specializing in power plants and construction equipment; Hyundai MOBIS, a supplier of automotive parts and future mobility solutions; and LG Energy Solution, a leader in EV batteries. Many of these firms are established conglomerates with diverse portfolios.
A notable pattern among these companies is their specialization in advanced manufacturing. Several entities, such as LG Display and LG Innotek, are dedicated to display technologies and electronic components. The presence of multiple automotive-related manufacturers like Kia Worldwide and Genesis highlights Seoul's role in the global vehicle industry, particularly in electric and luxury segments.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 | |||
| 2 |
Doosandoosan.com
A global company specializing in building power plants, industrial facilities, machine tools, engines, bridges, construction equipment, and consumer products |
42,000 | |||
| 3 |
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 | |||
| 4 |
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 | |||
| 5 |
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 | |||
| 6 |
LG Displaylgdisplay.com
Manufacturing display panels for TVs, computers, automobiles, tablets, and mobile devices in facilities across Korea, China, and Vietnam. |
6,139 | |||
| 7 |
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 | |||
| 8 |
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 | |||
| 9 |
Hyosung Corporationhyosung.com
An innovative conglomerate focused on developing materials, parts, and equipment for safer vehicles, sustainable electricity, functional clothing, and customer well-being |
2,571 | |||
| 10 |
Hanwha Systemshanwhasystems.com
Global company based in South Korea providing defense electronics, ICT solutions, and cutting-edge technology such as air taxis and satellite communication antennas |
1,375 | |||
| 11 |
Genesisgenesis.com
Genesis is a global luxury automotive brand focusing on high-performance, design, safety, and innovation while leading the way towards a sustainable future with electrification |
1,363 | |||
| 12 |
SK Oneng.sk-on.com
A global leader in electric vehicle battery development and solutions, offering safe, high-performing products and comprehensive services for sustainable battery lifecycle |
1,224 | |||
| 13 |
Osstemosstem.com
A leading dental implant company in Korea, pioneering the market, offering comprehensive dental solutions globally to become the top dental industry leader |
1,043 | |||
| 14 |
CERAGEMceragem-siegburg.de
A global home healthcare company providing innovative products and services for health and well-being |
868 | |||
| 15 |
LG Vehicle Solution Globallg.com
A company specializing in commercializing environmentally responsible automotive components and core solutions based on proprietary technologies for global car manufacturers |
801 | |||
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 |
Hanwha Aerospace
Specializing in land defense systems, the company's division focuses on developing and providing innovative solutions for military applications |
657 | |||
| 17 | 561 | ||||
| 18 |
LG HVAC Solutions Globallg.com
The company specializes in providing optimized HVAC solutions for various business environments, focusing on comfort, efficiency, and sustainability through innovative technology |
559 | |||
| 19 |
InBodyinbody.com
InBody creates medical-grade body composition analyzers to help professionals and consumers track body composition accurately for health and wellness goals |
506 | |||
| 20 |
Seegene Inc.seegene.com
A global leader in molecular diagnostics, developing innovative tests and equipment to improve early diagnosis of ailments and quality of life worldwide |
504 | |||
| 21 | 495 | ||||
| 22 |
한화에어로스페이스hanwhaaerospace.com
This is the official LinkedIn account of a company specializing in aerospace and defense technologies |
489 | |||
| 23 |
ILJIN Electric Co., Ltd.iljinelectric.com
A Korea-based company that specializes in manufacturing high voltage XLPE cables, transformers, GIS, and ESS systems for utility customers worldwide |
455 | |||
| 24 |
Bluebird, Inc.bluebirdcorp.com
Global top 3 high-end mobile computer manufacturer offering industrial handheld computers, rugged tablets, and mobile POS devices worldwide with innovative features |
375 | |||
| 25 | 375 | ||||
| 26 |
경동나비엔kdnavien.co.kr
Creating a pleasant living environment by offering clean ventilation systems, condensing boilers, hot water mats, and smart home systems |
345 | |||
| 27 |
Hanwha Solutions Corporationhanwhasolutions.com
A company specializing in smart energy solutions, customer-focused materials, and green hydrogen, aiming to lead in sustainable global growth for a better future |
321 | |||
| 28 |
Telechips, Inc.telechips.com
A leader in semiconductor technology, specializing in Automotive Infotainment and STB, offering high-security, power-efficient solutions with global presence and innovative products |
318 | |||
| 29 |
Rebellionsrebellions.ai
Specializing in enabling accelerated generative AI at scale through innovative technology solutions |
315 | |||
| 30 | 240 | ||||
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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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