# 38 leading electronics and semiconductor companies in South Korea

Tamtam tracks 38 electronics and semiconductor companies headquartered in South Korea. This list ranks all of them by number of employees on LinkedIn, led by Samsung Electronics, LG Electronics and Samsung Mobile. Their median headcount is 495. Half of them were founded in 1991 or later. The most common headquarters are Seoul (13).

The electronics and semiconductor sector in South Korea is dominated by large groups and established firms. Samsung Electronics, a global technology leader, innovates in diverse areas from smartphones to medical devices. LG Electronics focuses on home appliances and digital signage. SK hynix is a major producer of DRAM and NAND Flash memory chips, while LG Display and Samsung Display specialize in TFT-LCD and OLED panels. Hanwha Systems contributes with defense electronics and ICT solutions.

Most of these companies were founded between the 1960s and 1980s, indicating a mature industrial base. A significant concentration of headquarters is observed in Seoul, Suwon-Si, and Yongin-si, highlighting these areas as key hubs for the country's electronics and semiconductor industry.

🇰🇷 South Korea · 38 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Samsung Electronics](https://www.tamtam.ai/c/samsung-electronics) (samsung.com)<br>A global technology leader, constantly innovating in TVs, smartphones, wearables, appliances, medical devices, and more Embracing diversity and creativity for growth | Computers and Electronics Manufacturing | 🇰🇷 Suwon-Si | 287,000 |  |
| 2 | [LG Electronics](https://www.tamtam.ai/c/lg-electronics) (lg.com)<br>This company provides products and services aimed at improving lives through innovation in home appliances, electronics, digital signage, and more | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 64,886 |  |
| 3 | [Samsung Mobile](https://www.tamtam.ai/c/samsung-mobile) (samsung.com)<br>This company specializes in providing secure and highly productive mobile solutions for enterprises, focusing on Android security and productivity on Samsung Galaxy devices worldwide | Consumer Electronics | 🇰🇷 Gyeonggi-do | 19,596 | 1969 |
| 4 | [SK hynix](https://www.tamtam.ai/c/sk-hynix) (skhynix.com)<br>Leading global producer of DRAM and NAND Flash memory chips, providing advanced semiconductor solutions for diverse IT product demands worldwide. | Renewable Energy Semiconductor Manufacturing | 🇰🇷 Icheon | 8,276 | 1983 |
| 5 | [LG Display](https://www.tamtam.ai/c/lg-display) (lgdisplay.com)<br>Manufacturing display panels for TVs, computers, automobiles, tablets, and mobile devices in facilities across Korea, China, and Vietnam. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 6,139 | 1987 |
| 6 | [Samsung Display](https://www.tamtam.ai/c/samsung-display) (samsungdisplay.com)<br>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. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Yongin-si | 3,443 | 2012 |
| 7 | [LG Innotek](https://www.tamtam.ai/c/lg-innotek) (lginnotek.com)<br>A global materials and components company innovating for various industries with products like camera modules, display substrates, semiconductor packages, and Industry 40 technologies | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 3,387 | 1970 |
| 8 | [Samsung Electro-Mechanics](https://www.tamtam.ai/c/samsung-electro-mechanics) (samsungsem.com)<br>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. | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Suwon | 3,077 | 1973 |
| 9 | [SK Group](https://www.tamtam.ai/c/sk-group) (eng.sk.com)<br>Investment and development in manufacturing, EV batteries, hydrogen energy, pharmaceuticals, semiconductors, focusing on growth, governance, and social impact. | Manufacturing | 🇰🇷 Seoul | 2,368 | 1953 |
| 10 | [Hanwha Systems](https://www.tamtam.ai/c/hanwha-systems) (hanwhasystems.com)<br>Global company based in South Korea providing defense electronics, ICT solutions, and cutting-edge technology such as air taxis and satellite communication antennas | Aviation and Aerospace Component Manufacturing | 🇰🇷 Seoul | 1,375 | 1978 |
| 11 | [LIG Defense&Aerospace](https://www.tamtam.ai/c/lig-defense-and-aerospace) (ligdefenseaerospace.com)<br>The company develops and produces advanced precision electronic systems, including missile, radar, avionics, communication systems, and more for military and commercial applications globally | Defense and Space Manufacturing | 🇰🇷 Yongin-si | 1,144 | 1976 |
| 12 | [SK ecoplant](https://www.tamtam.ai/c/sk-ecoplant) (skecoplant.com)<br>Leading environmental services operator focused on water treatment, waste management, e-waste, renewable energy, and building a circular economy for a better world | Architecture and Planning | 🇰🇷 Seoul | 684 | 1977 |
| 13 | [KEC](https://www.tamtam.ai/c/kec) (keccorp.com)<br>A global semiconductor company established in 1969, specializing in non-memory semiconductor products such as transistors, diodes, ICs, MOSFETs, and more | Semiconductor Manufacturing | 🇰🇷 Seocho-gu | 648 | 1969 |
| 14 | [SEMES](https://www.tamtam.ai/c/semes) (semes.com)<br>A leading semiconductor equipment manufacturer in Korea, producing equipment for FPD with a 20-year history and a promise of excellence | Semiconductor Manufacturing | 🇰🇷 Cheonan-si | 645 | 1993 |
| 15 | [KETI(Korea Electronics Technology Institute)](https://www.tamtam.ai/c/keti-korea-electronics-technology-institute) (keti.re.kr)<br>A world-leading research institute specializing in technology convergence, green IT, and green growth, supporting SMEs and venture businesses with technological assistance and marketing aid | Research Services | 🇰🇷 Seongnam-si | 639 | 1991 |
| 16 | [SOLUM](https://www.tamtam.ai/c/solum) (solum-group.com)<br>A global company specializing in power suppliers, tuners, and electronic shelf labels with locations in South Korea, USA, and Germany | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Yongin-si | 585 | 2015 |
| 17 | [Hanwha Vision](https://www.tamtam.ai/c/hanwha-vision) (hanwhavision.com)<br>A leading provider in the global video surveillance industry, specializing in optical design, image processing, cybersecurity, AI, and cloud technologies | Security and Investigations | 🇰🇷 Seongnam-Si | 550 |  |
| 18 | [LX Semicon](https://www.tamtam.ai/c/lx-semicon) (lxsemicon.com)<br>A leading fabless company in Korea specializing in system IC technology for IT displays, expanding globally with a diverse product portfolio | Semiconductor Manufacturing | 🇰🇷 Seoul | 540 | 1999 |
| 19 | [FADU](https://www.tamtam.ai/c/fadu) (fadu.io)<br>FADU is a fabless start-up focused on advancing Flash storage devices for enterprise data centers, offering low power, high performance solutions | Semiconductor Manufacturing | 🇰🇷 Seoul | 495 | 2015 |
| 20 | [Seoul Semiconductor](https://www.tamtam.ai/c/seoul-semiconductor) (seoulsemicon.com)<br>Develops and commercializes light emitting diodes for automotive, illumination, specialty lighting, and backlighting markets, holding numerous patents and offering innovative products. | Semiconductor Manufacturing | 🇰🇷 Ansan-city | 491 | 1992 |
| 21 | [HL Klemove](https://www.tamtam.ai/c/hl-klemove) (hlklemove.com)<br>HL Klemove is a new company formed by merging two industry leaders in autonomous driving and automotive components, promising to provide freedom of movement and improved quality of life | Motor Vehicle Parts Manufacturing | 🇰🇷 | 451 | 2008 |
| 22 | [SKC](https://www.tamtam.ai/c/skc) (skc.co.kr)<br>With a focus on developing materials for a better world, this company provides innovative solutions in rechargeable battery, semiconductor, and eco-friendly materials | Renewables & Environment | 🇰🇷 Seoul | 416 | 1976 |
| 23 | [Heesung Electronics LTD.](https://www.tamtam.ai/c/heesung-electronics-ltd) (hselec.co.kr)<br>A specialized electronics manufacturer producing core display components like BLU, TSP, and LED, with a focus on technological advancements and global expansion | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 412 | 1973 |
| 24 | [Hyundai Kefico Corporation (현대케피코)](https://www.tamtam.ai/c/hyundai-kefico-corporation) (hyundai-kefico.com)<br>The company designs, verifies, calibrates, and manufactures advanced electronic control systems for vehicles, with a focus on safety and efficiency | Motor Vehicle Manufacturing | 🇰🇷 Gunpo | 374 | 1987 |
| 25 | [Samsung Foundry](https://www.tamtam.ai/c/samsung-foundry) (samsung.com)<br>Specializing in advanced process and design technologies, Samsung Foundry offers a range of foundry capabilities, design services, and intellectual property solutions for high-volume manufacturing projects | Semiconductor Manufacturing | 🇰🇷 Yongin-si | 372 |  |
| 26 | [Wonik](https://www.tamtam.ai/c/wonik) (wonik.com)<br>A happy organization where human and technology coexist, embodying philosophical values in their approach to technology | Semiconductor Manufacturing | 🇰🇷 Seongnam-city | 363 |  |
| 27 | [LS Mtron](https://www.tamtam.ai/c/ls-mtron) (lsmtron.com)<br>The company operates in machinery and components sectors, producing tractors, injection molding systems, track shoes for battle vehicles, and electronic components | Industrial Machinery Manufacturing | 🇰🇷 Anyang | 338 | 2008 |
| 28 | [MAY](https://www.tamtam.ai/c/may-hwaseong-si) (may-display.com)<br>Specializing in manufacturing and designing micro display panels, optic engines, and other electronic products, offering a one-stop total solution for clients | Semiconductor Manufacturing | 🇰🇷 Hwaseong-si | 338 | 2017 |
| 29 | [Samjin Co., Ltd](https://www.tamtam.ai/c/samjin-co-ltd) (samjin.com)<br>A global leader in smart control technology for the connected home, offering innovative solutions for controlling entertainment devices and home systems | Consumer Electronics | 🇰🇷 Anyang-si | 321 | 1975 |
| 30 | [Telechips, Inc.](https://www.tamtam.ai/c/telechips-inc) (telechips.com)<br>A leader in semiconductor technology, specializing in Automotive Infotainment and STB, offering high-security, power-efficient solutions with global presence and innovative products | Semiconductor Manufacturing | 🇰🇷 Seoul | 318 | 1999 |
| 31 | [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 |
| 32 | [Amkor Technology Korea](https://www.tamtam.ai/c/amkor-technology-korea) (amkor.recruiter.co.kr)<br>A leading provider of high-quality semiconductor packaging and testing services, dedicated to customer satisfaction, engineering expertise, and mass production capabilities | Semiconductor Manufacturing | 🇰🇷 | 312 | 1968 |
| 33 | [Magnachip Semiconductor](https://www.tamtam.ai/c/magnachip-semiconductor)<br>A leading designer and manufacturer of analog and mixed-signal semiconductor solutions for various industries with extensive engineering and patent portfolio | Semiconductor Manufacturing | 🇰🇷 | 267 | 2004 |
| 34 | [CSK](https://www.tamtam.ai/c/csk) (csk.kr)<br>Top abatement company in South Korea providing agile solutions through professional service engineering team and high-tech technology for various processes | Semiconductor Manufacturing | 🇰🇷 Yongin | 240 | 1997 |
| 35 | [TSE](https://www.tamtam.ai/c/tse) (tse21.com)<br>Specialized test interface solutions providing high accuracy and efficiency for global chipmakers to accelerate semiconductor technological advancements and transform future electronic components. | Semiconductor Manufacturing | 🇰🇷 | 84 | 1994 |
| 36 | [Global ZEUS (ZEUS Co., Ltd.)](https://www.tamtam.ai/c/global-zeus-zeus-co-ltd) (globalzeus.com)<br>The company provides high-quality solutions for the Semiconductor, Automation, LCD, LED, renewable energy, and IT industries through innovative products and exceptional customer support | Semiconductor Manufacturing | 🇰🇷 Hwaseong-si | 44 | 1970 |
| 37 | [AMOSENSE](https://www.tamtam.ai/c/amosense) (amosenseiot.com)<br>Korean IoT device maker specializing in advanced electronic components and IoT solutions for various industries, with a focus on innovation and global leadership | Appliances, Electrical, and Electronics Manufacturing | 🇰🇷 Seoul | 19 | 1994 |
| 38 | [Will Technology](https://www.tamtam.ai/c/will-technology) (willtechnology.co.kr)<br>Specializing in supporting testing solutions and instruments for the semiconductor and PCB industries | Semiconductor Manufacturing | 🇰🇷 Jangan-dong | 18 | 2001 |

## 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](https://www.tamtam.ai/l/largest-companies-south-korea) (880)
- [Multinational companies in South Korea](https://www.tamtam.ai/l/multinational-companies-south-korea) (299)
- [Companies with in-house R&D in South Korea](https://www.tamtam.ai/l/r-and-d-companies-south-korea) (229)
- [Manufacturers in South Korea](https://www.tamtam.ai/l/manufacturers-south-korea) (172)
- [Publicly traded companies in South Korea](https://www.tamtam.ai/l/publicly-traded-companies-south-korea) (122)
- [Companies with a mobile app in South Korea](https://www.tamtam.ai/l/companies-with-mobile-app-south-korea) (116)
- [IT Services and IT Consulting companies in South Korea](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-south-korea) (112)
- [Hardware manufacturers in South Korea](https://www.tamtam.ai/l/hardware-companies-south-korea) (98)
- [Corporate groups and holding companies in South Korea](https://www.tamtam.ai/l/holding-companies-south-korea) (98)
- [Education providers in South Korea](https://www.tamtam.ai/l/education-companies-south-korea) (88)
- [Financial services firms in South Korea](https://www.tamtam.ai/l/financial-services-firms-south-korea) (73)
- [Higher Education companies in South Korea](https://www.tamtam.ai/l/higher-education-companies-south-korea) (65)
- [Critical infrastructure operators in South Korea](https://www.tamtam.ai/l/critical-infrastructure-operators-south-korea) (60)
- [Retail chains in South Korea](https://www.tamtam.ai/l/retail-chains-south-korea) (59)
- [AI companies in South Korea](https://www.tamtam.ai/l/ai-companies-south-korea) (55)
- [Computer Games companies in South Korea](https://www.tamtam.ai/l/computer-games-companies-south-korea) (53)
- [Public sector organisations in South Korea](https://www.tamtam.ai/l/public-sector-organisations-south-korea) (48)
- [Energy companies in South Korea](https://www.tamtam.ai/l/energy-companies-south-korea) (47)
- [Financial Services companies in South Korea](https://www.tamtam.ai/l/financial-services-companies-south-korea) (46)
- [Research institutes in South Korea](https://www.tamtam.ai/l/research-institutes-south-korea) (43)
- [Automotive manufacturers and suppliers in South Korea](https://www.tamtam.ai/l/automotive-companies-south-korea) (42)
- [E-commerce companies in South Korea](https://www.tamtam.ai/l/ecommerce-companies-south-korea) (42)
- [Chemical companies in South Korea](https://www.tamtam.ai/l/chemical-companies-south-korea) (29)
- [SaaS companies in South Korea](https://www.tamtam.ai/l/saas-companies-south-korea) (28)

## The same list elsewhere

- [Electronics and semiconductor companies in the world](https://www.tamtam.ai/l/electronics-companies-in-the-world) (3,685)
- [Electronics and semiconductor companies in Asia](https://www.tamtam.ai/l/electronics-companies-in-asia) (633)

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Source: https://www.tamtam.ai/l/electronics-companies-south-korea