# List of AI companies in Seoul

Tamtam tracks 26 AI companies headquartered in Seoul. This list ranks all of them by number of employees on LinkedIn, led by Samsung SDS, LG CNS and Engoo. Their median headcount is 468. Half of them were founded in 2005 or later.

These Seoul-based companies are predominantly IT services and consulting firms, alongside e-learning providers and a few other sectors. Most of them are mid-sized to large organizations, with several established players in the IT sector. This list includes Samsung SDS, which specializes in cloud platforms and digital logistics, and LG CNS, a DX-specialized company offering digital transformation services. Other notable firms are Engoo, a global e-learning provider, and Yanolja, an innovative travel platform.

A clear pattern among these companies is their strong focus on digital transformation and advanced technology solutions. Many, like CyberLogitec, which provides technology for maritime shipping, and CJ OliveNetworks, which leads digital transformation with AI and big data, leverage AI and data expertise to drive innovation across various industries.

🇰🇷 Seoul · 26 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Samsung SDS](https://www.tamtam.ai/c/samsung-sds) (samsungsds.com)<br>Delivers specialized cloud platforms, digital logistics management, and SaaS solutions to optimize business environments and drive industrial innovation through global IT expertise. | IT Services and IT Consulting | 🇰🇷 Seoul | 15,040 |  |
| 2 | [LG CNS](https://www.tamtam.ai/c/lg-cns) (lgcns.com)<br>DX-specialized company providing digital transformation services through AI, Data, Cloud, and IT expertise, driving customer innovation, talent development, and industry-specific solutions | IT Services and IT Consulting | 🇰🇷 Seoul | 6,299 |  |
| 3 | [Engoo](https://www.tamtam.ai/c/engoo) (engoo.com)<br>Global provider of engaging 1-on-1 language lessons via a platform integrated with original materials, connecting people worldwide through language learning | E-Learning Providers | 🇰🇷 Seoul | 3,216 | 2013 |
| 4 | [Yanolja](https://www.tamtam.ai/c/yanolja) (yanoljagroup.com)<br>Innovative travel platform offering services in accommodation, leisure, transportation, and restaurants, with a subsidiary providing cloud-based solutions to global hospitality industry | IT Services and IT Consulting | 🇰🇷 Seoul | 2,407 | 2005 |
| 5 | [PUBG Corporation](https://www.tamtam.ai/c/pubg-corporation) (krafton.com)<br>KRAFTON, Inc is a collective of game development studios creating innovative entertainment experiences worldwide, including popular titles like PUBG and TERA | Computer Games | 🇰🇷 Seoul | 2,256 |  |
| 6 | [CyberLogitec](https://www.tamtam.ai/c/cyberlogitec) (cyberlogitec.com)<br>Advanced technology solutions for maritime shipping, terminal operations, and logistics, enhancing efficiency, visibility, and collaboration across supply chains. | IT Services and IT Consulting | 🇰🇷 Seoul | 961 | 2000 |
| 7 | [Ringle](https://www.tamtam.ai/c/ringle) (ringleplus.com)<br>A platform founded by Stanford MBAs to provide conversational English practice for students worldwide, focusing on cultural barriers and education | E-Learning Providers | 🇰🇷 Seoul | 887 | 2015 |
| 8 | [CJ OliveNetworks](https://www.tamtam.ai/c/cj-olivenetworks) (cjolivenetworks.co.kr)<br>**Summary:** CJ OliveNetworks provides comprehensive IT services, leading CJ Group's digital transformation with expertise in IT systems, AI, big data, and blockchain technologies | IT Services and IT Consulting | 🇰🇷 Seoul | 800 | 1995 |
| 9 | [KT DS](https://www.tamtam.ai/c/kt-ds) (ktds.com)<br>A South Korean IT company offering system management, outsourcing, and IT consulting services as a subsidiary of KT Corporation Headquarters in Seoul | IT Services and IT Consulting | 🇰🇷 Seoul | 767 | 2008 |
| 10 | [CJ대한통운](https://www.tamtam.ai/c/cj-seoul) (cjlogistics.com)<br>A company specializing in expert logistics solutions, providing efficient and reliable services for transporting goods and managing supply chains effectively | Transportation, Logistics, Supply Chain and Storage | 🇰🇷 Seoul | 536 |  |
| 11 | [Seegene Inc.](https://www.tamtam.ai/c/seegene-inc) (seegene.com)<br>A global leader in molecular diagnostics, developing innovative tests and equipment to improve early diagnosis of ailments and quality of life worldwide | Biotechnology Research | 🇰🇷 Seoul | 504 | 2000 |
| 12 | [Toss Securities](https://www.tamtam.ai/c/toss-securities) (toss.im)<br>A service offering a variety of features and products for all types of investors to make planned and stable investments regardless of market conditions | Financial Services | 🇰🇷 Seoul | 485 | 2021 |
| 13 | [신세계아이앤씨](https://www.tamtam.ai/c/company-95731789) (shinsegae-inc.com)<br>A global retail tech specialist leveraging digital technology for innovation Leading the retail industry in the 4th industrial revolution, enhancing future competitiveness, and transforming daily life | Information Services | 🇰🇷 Seoul | 468 | 1997 |
| 14 | [웍스피어(유)](https://www.tamtam.ai/c/company-2409207) (jobkorea.co.kr)<br>A leading employment site in South Korea with over 10 million members, offering the most job postings and global recruiting opportunities | IT Services and IT Consulting | 🇰🇷 Seoul | 454 | 1996 |
| 15 | [롯데e커머스 (롯데ON)](https://www.tamtam.ai/c/e-on) (story.lotteon.com)<br>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 | Technology, Information and Internet | 🇰🇷 Seoul | 451 | 2018 |
| 16 | [ESTsoft Corp.](https://www.tamtam.ai/c/estsoft-corp) (estsoft.ai)<br>A leading AI-powered service company utilizing artificial intelligence for innovative R&D outcomes in various sectors, providing practical technology for daily life improvements | Software Development | 🇰🇷 Seoul | 404 | 1993 |
| 17 | [KineMaster - Video Editor](https://www.tamtam.ai/c/kinemaster-video-editor) (kinemaster.com)<br>Mobile video editing suite with templates and assets for businesses, journalists, influencers, entrepreneurs, and creatives to create professional videos easily on-the-go | Software Development | 🇰🇷 Seoul | 394 | 2002 |
| 18 | [MEDIT](https://www.tamtam.ai/c/medit) (medit.com)<br>Global provider of innovative 3D intraoral scanners and digital dentistry platform compatible with both Windows and Apple Mac, driving change in the dental technology industry | Medical Equipment Manufacturing | 🇰🇷 Seoul | 375 | 2000 |
| 19 | [Dong-A Pharmaceutical Co.,Ltd](https://www.tamtam.ai/c/dong-a-pharmaceutical-co-ltd) (donga.co.kr)<br>Leading South Korean pharmaceutical company specializing in developing, manufacturing, and distributing innovative healthcare products, including medicines, energy drinks, medical equipment, and bio-technology solutions | Pharmaceutical Manufacturing | 🇰🇷 Seoul | 354 | 1932 |
| 20 | [LG AI Research](https://www.tamtam.ai/c/lg-ai-research) (lgresearch.ai)<br>Specializing in AI research, our team explores its impact on industries, economies, and environmental sustainability to unlock its full potential | Research Services | 🇰🇷 Seoul | 341 | 2020 |
| 21 | [DOUZONE BIZON](https://www.tamtam.ai/c/douzone-bizon) (douzone.com)<br>A leader in industrial information systems, providing innovative digitalization solutions such as ERP, IFRS, groupware, and electronic tax invoices to enhance competitiveness | Technology, Information and Internet | 🇰🇷 Seoul | 316 | 2003 |
| 22 | [Rebellions](https://www.tamtam.ai/c/rebellions) (rebellions.ai)<br>Specializing in enabling accelerated generative AI at scale through innovative technology solutions | Semiconductor Manufacturing | 🇰🇷 Seoul | 315 | 2020 |
| 23 | [Cinamon](https://www.tamtam.ai/c/cinamon) (cinev.com)<br>Innovative company developing CineV, a 3D Animation UGC platform, empowering users to easily create and share high-quality animated content worldwide | Entertainment Providers | 🇰🇷 Seoul | 126 |  |
| 24 | [소크라에이아이 (Socra AI)](https://www.tamtam.ai/c/socra-ai) (socra.ai)<br>A leading AI solutions provider disrupting education, empowering global players with innovative technology for personalized, efficient learning experiences worldwide | IT Services and IT Consulting | 🇰🇷 Seoul | 110 |  |
| 25 | [Dabeeo, Inc.](https://www.tamtam.ai/c/dabeeo-inc) (dabeeo.com)<br>AI technology company specializing in geospatial data, creating digital twin earth by digitizing spatial data through AI-powered transformation and analysis. | Software Development | 🇰🇷 Seoul | 50 | 2012 |
| 26 | [z-emotion](https://www.tamtam.ai/c/z-emotion) (z-emotion.com)<br>z-emotion provides advanced 3D solutions for the fashion industry, offering virtualization, real-time fitting, and digital transformation tools for design and merchandising | Software Development | 🇰🇷 Seoul | 29 | 2017 |

## 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 Seoul

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- [Multinational companies in Seoul](https://www.tamtam.ai/l/multinational-companies-seoul) (150)
- [Companies with in-house R&D in Seoul](https://www.tamtam.ai/l/r-and-d-companies-seoul) (88)
- [Manufacturers in Seoul](https://www.tamtam.ai/l/manufacturers-seoul) (70)
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- [Publicly traded companies in Seoul](https://www.tamtam.ai/l/publicly-traded-companies-seoul) (61)
- [Corporate groups and holding companies in Seoul](https://www.tamtam.ai/l/holding-companies-seoul) (59)
- [IT Services and IT Consulting companies in Seoul](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-seoul) (57)
- [Financial services firms in Seoul](https://www.tamtam.ai/l/financial-services-firms-seoul) (49)
- [Hardware manufacturers in Seoul](https://www.tamtam.ai/l/hardware-companies-seoul) (42)
- [Retail chains in Seoul](https://www.tamtam.ai/l/retail-chains-seoul) (39)
- [Critical infrastructure operators in Seoul](https://www.tamtam.ai/l/critical-infrastructure-operators-seoul) (36)
- [Education providers in Seoul](https://www.tamtam.ai/l/education-companies-seoul) (30)
- [Financial Services companies in Seoul](https://www.tamtam.ai/l/financial-services-companies-seoul) (28)

## The same list elsewhere in South Korea

- [AI companies in South Korea](https://www.tamtam.ai/l/ai-companies-south-korea) (55)

## The same list elsewhere

- [AI companies in the world](https://www.tamtam.ai/l/ai-companies-in-the-world) (10,505)
- [AI companies in Asia](https://www.tamtam.ai/l/ai-companies-in-asia) (1,188)

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Source: https://www.tamtam.ai/l/ai-companies-seoul