The companies listed here are primarily large to mid-sized firms based in Seoul, with a strong presence in the financial services sector, manufacturing, and technology. Notable examples include Hyundai Motor Company, a global automotive manufacturer, and LG Electronics, known for home appliances and electronics. Also present are financial institutions such as Toss, a fintech company, and Hana Bank, a leading South Korean bank. CJ OLIVE YOUNG represents the retail sector, while Netmarble Company specializes in computer games.
A significant pattern observed is the dominance of financial services companies, including traditional banks like Woori Bank and KB Kookmin Bank, and newer fintech players. This suggests a robust and evolving financial landscape within Seoul. Beyond finance, there's a mix of established industrial giants and technology-driven companies, all headquartered in the South Korean capital.
| # | 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 | 3,240 | ||||
| 4 |
Hana Bankkebhana.com
A leading bank in South Korea with a focus on ESG management, low-carbon finance, and digital innovation to become a global financial group |
1,788 | |||
| 5 |
CJ OLIVE YOUNGcorp.oliveyoung.com
A pioneer in Korean health & beauty retail, offering unique products and trends globally through 1,200 stores and global delivery |
1,631 | |||
| 6 |
Woori Bankwooribank.com
This company offers a comprehensive range of commercial banking services including deposits, loans, securities, trust accounts, corporate finance, and more |
1,441 | |||
| 7 |
KB Kookmin Bank 국민은행kbstar.com
A global financial institution based in Seoul, South Korea, offering a range of personal and corporate banking products and services worldwide |
1,209 | |||
| 8 |
Industrial Bank of Koreaibk.co.kr
A state-owned financial institution in South Korea focused on providing services to SMEs and industrial sectors, supporting economic growth |
875 | |||
| 9 |
Samsung Life Insurancesamsunglife.com
A leading life insurance company in South Korea, committed to protecting lives and assets, promoting family values, and global growth through innovation and community support |
817 | |||
| 10 |
우리은행wooribank.com
Constantly leading innovation and change in the finance industry in South Korea, presenting a new vision for the future |
815 | |||
| 11 |
Korea Investment & Securities Co., Ltdsecurities.koreainvestment.com
A leading financial company under Korea Investment Holdings, offering diversified services in brokerage, asset management, investment banking, and sales & trading |
709 | |||
| 12 |
Gmarketcorp.gmarket.com
Global Marketplace connecting values worldwide, offering innovative shopping experiences with a focus on creating opportunities and a sustainable e-commerce system |
707 | |||
| 13 |
Netmarble Companynetmarble.com
A global game company that develops high-quality games and engages in PC/mobile game publishing business |
664 | |||
| 14 |
케이뱅크(Kbank)kbanknow.com
A financial services company that aims to transform our financial lives with practical solutions, fostering growth opportunities in a creative environment |
654 | |||
| 15 |
Karrotabout.daangn.com
Community super app igniting local connections through services like buying/selling goods, job listings, and payment solutions with over 30 million users worldwide |
579 | |||
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 |
Jeju Airjejuair.net
A fast-growing Low Cost Carrier in Korea operating Boeing 737-800s with domestic and international destinations, established in 2005 |
579 | |||
| 17 |
Toss Bank(토스뱅크)toss.im
The team aims to establish a new internet bank in South Korea for financial innovation, offering customer-centric services to underserved communities |
575 | |||
| 18 |
CHUNGDAHM Learningcreverse.com
Leading provider of innovative ESL programs in Korea and internationally, focused on critical & creative thinking to enhance language development |
568 | |||
| 19 |
Bucketplace (Ohouse)bucketplace.com
A lifestyle super-app offering interior solutions like e-commerce, home remodeling, furniture delivery, home tasks, and moving services with innovative customer experiences |
567 | |||
| 20 | 561 | ||||
| 21 |
Com2us Corporationcom2us.com
A leading developer and publisher of mobile games since 1998, known for highly recognized titles and exceptional technology across multiple platforms |
559 | |||
| 22 |
Toss Securitiestoss.im
A service offering a variety of features and products for all types of investors to make planned and stable investments regardless of market conditions |
485 | |||
| 23 |
Nonghyup Bankbanking.nonghyup.com
A banking company headquartered in Seoul, South Korea, providing financial services and solutions to individuals and businesses |
480 | |||
| 24 |
위대한상상(요기요)wesang.com
A platform that connects people with a variety of food options, making it convenient and enjoyable to prepare, share, and savor meals together |
460 | |||
| 25 |
여기어때컴퍼니gccompany.co.kr
A leading comprehensive travel platform expanding into various sectors such as accommodations, flights, activities, dining, and overseas travel, focusing on customer experience and growth |
460 | |||
| 26 |
롯데e커머스 (롯데ON)story.lotteon.com
The company is a leading online shopping platform, part of a large retail conglomerate, focusing on creating a convenient and reliable shopping experience for customers |
451 | |||
| 27 |
ESTsoft Corp.estsoft.ai
A leading AI-powered service company utilizing artificial intelligence for innovative R&D outcomes in various sectors, providing practical technology for daily life improvements |
404 | |||
| 28 |
KineMaster - Video Editorkinemaster.com
Mobile video editing suite with templates and assets for businesses, journalists, influencers, entrepreneurs, and creatives to create professional videos easily on-the-go |
394 | |||
| 29 | 375 | ||||
| 30 |
NEXON GAMESnexongames.co.kr
A team dedicated to creating and showcasing better games, striving to exceed expectations and lead the way in game development |
357 | |||
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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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- Retail chains in Seoul 39
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