This selection of corporate groups and holding companies in Seoul includes large, diversified firms in industries such as industrial machinery, chemicals, and construction. Notable examples include Doosan, which builds power plants and industrial facilities, and Samsung C&T Corporation, active in engineering, construction, trading, and fashion. Hanwha Group operates in energy, aerospace, and finance, while LG Chem specializes in petrochemicals and advanced materials. SK Innovation focuses on sustainable energy technologies, and AMOREPACIFIC is a beauty conglomerate.
The companies listed here generally have a long history, with many founded in the mid-20th century. Doosan was established in 1896, Samsung C&T Corporation in 1938, and LG Chem in 1947. This suggests a prevalence of established enterprises rather than newly formed ventures.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Doosandoosan.com
A global company specializing in building power plants, industrial facilities, machine tools, engines, bridges, construction equipment, and consumer products |
42,000 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 | 6,299 | ||||
| 5 |
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 | |||
| 6 |
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 | |||
| 7 |
AMOREPACIFICapgroup.com
Established in 1945, this leading Korean beauty conglomerate operates numerous brands in beauty, personal care, and health care industries |
3,746 | |||
| 8 |
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 | |||
| 9 |
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 | |||
| 10 |
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 | |||
| 11 |
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 | |||
| 12 |
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 | |||
| 13 |
KBS (Korean Broadcasting System)english.kbs.co.kr
KBS is Korea's top public broadcaster, providing diverse TV, radio, and DMB programs, broadcasting in HD, and offering international content |
2,479 | |||
| 14 |
Yanoljayanoljagroup.com
Innovative travel platform offering services in accommodation, leisure, transportation, and restaurants, with a subsidiary providing cloud-based solutions to global hospitality industry |
2,407 | |||
| 15 |
CJ ENM ENTERTAINMENT DIV.cjenm.com
A pioneer in creating original entertainment content across various platforms, fostering talent and embracing diversity in the global entertainment industry |
2,405 | |||
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 |
SK Groupeng.sk.com
Investment and development in manufacturing, EV batteries, hydrogen energy, pharmaceuticals, semiconductors, focusing on growth, governance, and social impact. |
2,368 | |||
| 17 |
PUBG Corporationkrafton.com
KRAFTON, Inc is a collective of game development studios creating innovative entertainment experiences worldwide, including popular titles like PUBG and TERA |
2,256 | |||
| 18 |
HYBEhybecorp.com
A global entertainment company innovating the music industry through various services like music production, management, concerts, video content, and more |
2,077 | |||
| 19 |
CJ Logisticscjlogistics.com
Leading global logistics company providing innovative supply chain management, technology, engineering, and consulting services across 40 countries worldwide. |
1,956 | |||
| 20 |
JYP Entertainmentjype.com
A leading entertainment company producing global artists, expanding K-pop's influence internationally, and investing in talent discovery and development Emphasizes transparency and social responsibility |
1,548 | |||
| 21 |
Hansae Fashion Worldwidehansae.com
A global apparel exporter with 14 locations in 7 countries, specializing in fashion design and aiming to inspire dreams and contribute to society |
1,270 | |||
| 22 |
(주)이마트 (EMART Inc.)career.emart.com
A leading eCommerce platform driving global expansion through digital transformation and strategic acquisitions, shaping a new On/Offline Eco system in retail industry |
1,197 | |||
| 23 |
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 | |||
| 24 |
Sae-A Trading Co.,Ltdsae-a.com
A global apparel manufacturer with 40+ facilities in 10 countries, supplying top retailers with high-quality products while prioritizing community engagement and corporate social responsibility |
1,030 | |||
| 25 |
Mirae Asset Global Investmentsam.miraeasset.com
Global investment management firm operating across 16 markets, offering diversified investment solutions and managing over $306 billion assets. |
928 | |||
| 26 |
HANWHA LIFE CO., LTD.company.hanwhalife.com
A leading life insurance company in South Korea, specializing in innovative products and services, digital capabilities, and global expansion in fintech and big data |
896 | |||
| 27 |
Shinsegaeshinsegaegroupnewsroom.com
Leading Korean retail company creating a happy world through value creation, transparency, fair management, and innovative approaches in the distribution industry |
803 | |||
| 28 |
Hansoll Textile Ltd.hansoll.com
A global textile manufacturer exporting knit apparel to the US, Europe, and Japan, with operations in Asia and Central America since 1992 Values employee development and business integrity |
773 | |||
| 29 |
Hyundai Capital Services
Global financial arm of Hyundai Motor Group offering auto, corporate, and industrial financing worldwide, focusing on digital transformation and partnerships for business effectiveness and growth |
759 | |||
| 30 |
SPC Group (SPC그룹)spc.co.kr
A global bakery and confectionery company with a focus on happiness, health, and community, offering a variety of brands and products |
746 | |||
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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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