This selection of large corporate groups and holding companies in South Korea includes major players in diverse sectors. Doosan specializes in industrial machinery and construction, while Samsung C&T Corporation offers engineering, construction, trading, and fashion services. SK Telecom is a telecommunications giant, and Hanwha Group is a diversified business in energy, aerospace, and finance.
The companies listed, such as LG Chem in petrochemicals and advanced materials, and NAVER Corp in ICT, show a strong concentration in Seoul for their headquarters. The presence of firms founded across several decades, from Doosan (1896) to NAVER Corp (1999), indicates a mix of long-established conglomerates and younger tech companies.
| # | 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 |
SK Telecomsktelecom.com
Leading telecommunications company focusing on AI, media, cloud, and connected intelligence to enhance customer experience and enterprise value. |
7,368 | |||
| 4 |
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 | |||
| 5 | 6,299 | ||||
| 6 |
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 | |||
| 7 |
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 | |||
| 8 |
POSCO HOLDINGSnewsroom.posco.com
A global steel producer known for innovative solutions, recognized for competitiveness, and committed to corporate citizenship and sustainable growth |
3,967 | |||
| 9 |
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 | |||
| 10 |
AMOREPACIFICapgroup.com
Established in 1945, this leading Korean beauty conglomerate operates numerous brands in beauty, personal care, and health care industries |
3,746 | |||
| 11 |
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 | |||
| 12 |
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 | |||
| 13 |
Youngone Corporationyoungone.co.kr
Manufacturing performance and outdoor apparel, footwear, bags, and accessories with global production facilities and a focus on quality and community development. |
3,155 | |||
| 14 |
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 | |||
| 15 |
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 | |||
| 16 |
Celltrion Inccelltrion.com
Global marketer of biological medicines, including the world's first biosimilar monoclonal antibody, to expand patient access to advanced therapies worldwide |
2,628 | |||
| 17 |
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 | |||
| 18 |
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 | |||
| 19 |
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 | |||
| 20 |
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 | |||
| 21 |
SK Groupeng.sk.com
Investment and development in manufacturing, EV batteries, hydrogen energy, pharmaceuticals, semiconductors, focusing on growth, governance, and social impact. |
2,368 | |||
| 22 |
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 | |||
| 23 |
HYBEhybecorp.com
A global entertainment company innovating the music industry through various services like music production, management, concerts, video content, and more |
2,077 | |||
| 24 |
CJ Logisticscjlogistics.com
Leading global logistics company providing innovative supply chain management, technology, engineering, and consulting services across 40 countries worldwide. |
1,956 | |||
| 25 |
LOTTE chemicallottechem.com
A global petrochemical company focused on developing cutting-edge technologies for producing high-quality chemical products and expanding globally |
1,939 | |||
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. | |||||
| 26 |
Doosan Enerbilitydoosanenerbility.com
A global provider of integrated solutions in power generation, energy, and desalination plants, offering sustainable energy solutions worldwide since 1962 |
1,726 | |||
| 27 |
KRAFTON Inc.krafton.com
Group of creative studios developing innovative technology and entertainment experiences designed for long-term fan engagement and interaction. |
1,682 | |||
| 28 |
LS Cable & Systemlscns.co.kr
A global cable solutions provider offering state-of-the-art products, engineering services, and global production capacity to power authorities and carriers worldwide |
1,630 | |||
| 29 |
Hyundai Motor Grouphyundaimotorgroup.com
Global corporation in automobile, steel, construction industries with focus on creating a better future through innovative thinking and collaborative efforts |
1,585 | |||
| 30 |
SM Entertainmentsmtown.com
A leading South Korean entertainment agency managing over 400 artists, popularizing K-pop stars worldwide through music production, content creation, and global distribution |
1,570 | |||
| 31 |
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 | |||
| 32 | 1,468 | ||||
| 33 |
Smilegatesmilegate.com
In constant pursuit of happier lives and a more hopeful society through the development and provision of quality games and content |
1,303 | |||
| 34 |
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 | |||
| 35 |
(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 | |||
| 36 |
LIG Defense&Aerospaceligdefenseaerospace.com
The company develops and produces advanced precision electronic systems, including missile, radar, avionics, communication systems, and more for military and commercial applications globally |
1,144 | |||
| 37 |
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 | |||
| 38 |
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 | |||
| 39 |
Celltrion Inc.celltrion.com
Innovative Korean pharmaceutical company pioneering antibody biosimilars and small molecule pharmaceuticals, focusing on global growth and novel healthcare platforms |
1,011 | |||
| 40 |
(주)GS리테일(GS Retail Inc.)gsretail.com
A retail company leading in various sectors such as convenience stores, supermarkets, and online commerce, focusing on customer satisfaction and data-driven business growth |
983 | |||
| 41 |
TKG TAEKWANGtaekwang.com
A leading OEM athletic footwear producer creating innovative and iconic products for the global market |
977 | |||
| 42 |
NH Investment & Securitiesnhsec.com
A leading force in Korea's capital market offering innovative financial solutions, with over 50 years of growth and a strong client base |
966 | |||
| 43 |
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 | |||
| 44 |
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 | |||
| 45 |
HYUNDAI ELEVATORhyundaielevator.co.kr
The company specializes in providing advanced mobility solutions like elevators, escalators, and parking systems, leveraging technology for a safer and smarter move |
855 | |||
| 46 |
Shinsegaeshinsegaegroupnewsroom.com
Leading Korean retail company creating a happy world through value creation, transparency, fair management, and innovative approaches in the distribution industry |
803 | |||
| 47 |
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 | |||
| 48 |
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 | |||
| 49 |
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 | |||
| 50 |
Dongwon groupdongwon.com
Focused on contributing to society for mutual growth, this company believes in the importance of social responsibility as a foundation |
734 | |||
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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.
More company lists in South Korea
- The largest companies in South Korea 880
- Multinational companies in South Korea 299
- Companies with in-house R&D in South Korea 229
- Manufacturers in South Korea 172
- Publicly traded companies in South Korea 122
- Companies with a mobile app in South Korea 116
- IT Services and IT Consulting companies in South Korea 112
- Hardware manufacturers in South Korea 98
- Education providers in South Korea 88
- Financial services firms in South Korea 73
- Higher Education companies in South Korea 65
- Critical infrastructure operators in South Korea 60
- Retail chains in South Korea 59
- AI companies in South Korea 55
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- Public sector organisations in South Korea 48
- Energy companies in South Korea 47
- Financial Services companies in South Korea 46
- Research institutes in South Korea 43
- Automotive manufacturers and suppliers in South Korea 42
- E-commerce companies in South Korea 42
- Electronics and semiconductor companies in South Korea 38
- Chemical companies in South Korea 29
- SaaS companies in South Korea 28