The largest R&D companies in South Korea are predominantly large corporations in manufacturing, particularly electronics and automotive, alongside significant players in construction and higher education. Samsung Electronics innovates in a wide range of electronics, while Hyundai Motor Company focuses on automotive solutions. LG Electronics provides home appliances and digital signage, and Hyundai Engineering & Construction specializes in civil engineering and power plants. Seoul National University and Yonsei University are prominent in higher education.
Most of these large R&D companies are headquartered in Seoul, indicating a strong concentration of industrial and academic research in the capital. The founding dates show a mix of well-established companies from the mid-20th century, such as Hyundai Engineering & Construction (1947) and LG Chem (1947), and those founded later in the century, like Hyundai MOBIS (1977) and KT (1981).
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Samsung Electronicssamsung.com
A global technology leader, constantly innovating in TVs, smartphones, wearables, appliances, medical devices, and more Embracing diversity and creativity for growth |
287,000 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
Samsung Mobilesamsung.com
This company specializes in providing secure and highly productive mobile solutions for enterprises, focusing on Android security and productivity on Samsung Galaxy devices worldwide |
19,596 | |||
| 5 |
Hyundai Engineering & Construction Co.,Ltd.en.hdec.kr
A leading South Korean construction company specializing in civil engineering, architecture, power plants, and nuclear power stations, focusing on improving life quality through innovation |
13,577 | |||
| 6 |
SAMSUNG E&Asamsungena.com
The company specializes in engineering, procurement, construction, and project management for various industries worldwide, focusing on innovative solutions and quality services |
9,171 | |||
| 7 |
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 | |||
| 8 |
Seoul National University
Leading academic community fostering scientific and technological progress, embracing challenges, and driving global transformation amid uncertainty. |
8,458 | |||
| 9 | 8,284 | ||||
| 10 |
SK hynixskhynix.com
Leading global producer of DRAM and NAND Flash memory chips, providing advanced semiconductor solutions for diverse IT product demands worldwide. |
8,276 | |||
| 11 |
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 | |||
| 12 |
Hanon Systemshanonsystems.com
A global supplier of automotive thermal and energy management solutions for electrified and conventional vehicles, focusing on innovation, global reach, and sustainable value creation |
6,236 | |||
| 13 |
LG Displaylgdisplay.com
Manufacturing display panels for TVs, computers, automobiles, tablets, and mobile devices in facilities across Korea, China, and Vietnam. |
6,139 | |||
| 14 |
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 | |||
| 15 |
Yonsei Universityyonsei.ac.kr
Leading university in Seoul offering comprehensive programs in education, research, and medical care with a global network and focus on sustainable development |
5,273 | |||
| 16 |
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 | |||
| 17 |
HD Hyundai Heavy Industrieshhi.co.kr
A global leader in shipbuilding and heavy industries, with a history of innovation and excellence in delivering large-scale projects worldwide |
4,308 | |||
| 18 |
Samsung SDIsamsungsdi.com
Development and production of innovative technology products with cutting-edge features, focusing on creativity and continuous improvement since 1970. |
4,080 | |||
| 19 |
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 | |||
| 20 |
Hanyang Universityhanyang.ac.kr
Private research university in South Korea with campuses in Seoul and Ansan Known for engineering, architecture, CEO alumni, and international student enrollment |
3,920 | |||
| 21 |
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 | |||
| 22 |
AMOREPACIFICapgroup.com
Established in 1945, this leading Korean beauty conglomerate operates numerous brands in beauty, personal care, and health care industries |
3,746 | |||
| 23 |
HL Mandohlmando.com
A leading automotive parts company focused on developing cutting-edge technology and quality parts for safe vehicles on a global scale |
3,561 | |||
| 24 |
Samsung Displaysamsungdisplay.com
Global leader providing cutting-edge display solutions with OLED and QD-OLED technology for smartphones, TVs, laptops, monitors, smartwatches, VRs, game consoles, and automotive applications. |
3,443 | |||
| 25 |
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 | |||
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| 26 |
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 | |||
| 27 |
CJ CheilJedangcj.co.kr
A global lifestyle company transitioning from a food company, focusing on healthy, convenient products, biotech, and global expansion with premium brands |
3,111 | |||
| 28 |
Samsung Electro-Mechanicssamsungsem.com
Develops and produces advanced electronic components, modules, and substrates globally using high-frequency wireless materials and precision mechanics for diverse business-to-business technology solutions. |
3,077 | |||
| 29 |
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 | |||
| 30 |
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 | |||
| 31 |
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 | |||
| 32 |
Sungkyunkwan Universityskku.edu
A top-ranking private university in Korea focusing on nurturing students' soft skills, supported by Samsung for academic and research advancements |
2,605 | |||
| 33 |
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 | |||
| 34 |
Kyung Hee Universitykhu.ac.kr
A leading comprehensive university in South Korea, promoting academic excellence and peacebuilding with a history of 68 years and multiple campuses |
2,457 | |||
| 35 |
Samsung Biologicssamsungbiologics.com
Fully integrated CDMO providing contract development and manufacturing services for biologics products with largest capacity, fastest throughput, and proven regulatory approvals globally |
2,450 | |||
| 36 |
SK Groupeng.sk.com
Investment and development in manufacturing, EV batteries, hydrogen energy, pharmaceuticals, semiconductors, focusing on growth, governance, and social impact. |
2,368 | |||
| 37 |
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 | |||
| 38 |
Ewha Womans University 이화여자대학교ewha.ac.kr
Pioneering women's education since 1886, this university in Korea has dedicated itself to empowering women and achieving excellence in society |
2,098 | |||
| 39 |
Hankook Tirehankooktire.com
Manufacture and supply high-quality tires globally, focusing on innovation, premium brands, and sustainable ESG management practices. |
2,083 | |||
| 40 |
Samsung Heavy Industriesshi.samsung.co.kr
A global leader in shipbuilding and offshore EPC projects, specializing in high-tech vessels and pioneering innovative products in various markets |
2,080 | |||
| 41 |
KAISTkaist.ac.kr
A leading research university in South Korea focusing on science and engineering education and research, often compared to MIT |
2,052 | |||
| 42 |
CJ Logisticscjlogistics.com
Leading global logistics company providing innovative supply chain management, technology, engineering, and consulting services across 40 countries worldwide. |
1,956 | |||
| 43 |
LOTTE chemicallottechem.com
A global petrochemical company focused on developing cutting-edge technologies for producing high-quality chemical products and expanding globally |
1,939 | |||
| 44 |
ETRIetri.re.kr
A global ICT research institute dedicated to developing innovative technologies, leading the creative economy, and enhancing Korea's position in the ICT industry worldwide |
1,875 | |||
| 45 |
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 | |||
| 46 |
KRAFTON Inc.krafton.com
Group of creative studios developing innovative technology and entertainment experiences designed for long-term fan engagement and interaction. |
1,682 | |||
| 47 |
(주)우아한형제들 (Woowa Bros.)career.woowahan.com
A leading delivery app company revolutionizing food culture by providing fast delivery, online grocery shopping, and door-to-door delivery of various products |
1,656 | |||
| 48 |
LINE Plus Corplinepluscorp.com
A global mobile platform company offering a variety of services like search, messaging, media, commerce, fintech, and AI to create amazing everyday experiences |
1,634 | |||
| 49 |
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 | |||
| 50 |
Chung-Ang Universitycau.ac.kr
A university focused on providing quality education and nurturing talented individuals to meet the needs of society Leading educational trends and promoting reform |
1,594 | |||
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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 13, 2026.
More company lists in South Korea
- The largest companies in South Korea 879
- Multinational companies in South Korea 298
- Manufacturers in South Korea 171
- 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
- Corporate groups and holding companies 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
- Computer Games companies in South Korea 53
- 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 37
- Chemical companies in South Korea 29
- SaaS companies in South Korea 28