These South Korean companies are primarily involved in pharmaceutical manufacturing and biotechnology research, with a notable presence of large established groups and mid-sized firms. Key players include LG Chem, a global chemical company with a focus on life sciences; Celltrion Inc., a global marketer of biological medicines; and Samsung Biologics, a CDMO for biologics products. Samsung Bioepis is also prominent for its biosimilar products, alongside Daewoong Pharmaceutical, which develops and commercializes pharmaceuticals globally. SK Group is involved in various sectors including pharmaceuticals and semiconductors.
A clear pattern among these companies is their strong focus on the development and manufacturing of biologics and biosimilars, indicating a specialized segment within the broader pharmaceutical industry. Many companies, such as Celltrion Inc. and Samsung Bioepis, emphasize expanding patient access to advanced therapies and innovative, high-quality products. There is also a significant concentration of headquarters in Seoul, Incheon, and Yeonsu-gu, suggesting these cities are key hubs for the pharmaceutical and biotech sectors in South Korea.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
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 | |||
| 2 |
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 | |||
| 3 |
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 | |||
| 4 |
SK Groupeng.sk.com
Investment and development in manufacturing, EV batteries, hydrogen energy, pharmaceuticals, semiconductors, focusing on growth, governance, and social impact. |
2,368 | |||
| 5 |
Samsung Bioepissamsungbioepis.com
A biopharmaceutical company founded in 2012, dedicated to making healthcare accessible through innovative, high-quality biosimilar products in various therapeutic areas |
1,574 | |||
| 6 |
Daewoong Pharmaceuticaldaewoong.co.kr
A South Korean pharmaceutical company established in 1945, develops, manufactures, and commercializes pharmaceuticals globally, with a focus on new drug development and international collaborations |
1,158 | |||
| 7 |
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 | |||
| 8 |
GC Biopharma (GC녹십자)gcbiopharma.com
Biopharmaceutical company based in South Korea specializing in protein therapeutics and vaccines, with a focus on quality healthcare solutions for over 50 years |
660 | |||
| 9 |
LOTTE Biologicslottebiologics.com
A South Korean CDMO company acquired a biologics manufacturing site, offering drug substance production with GMP operational capabilities and global regulatory approvals Expanding with new bio plants |
611 | |||
| 10 |
종근당 CKD Pharmaceuticalsckdpharm.com
Specializing in innovative pharmaceutical research and development, focusing on first-in-class and unmet needs medications to improve quality of life and global health |
536 | |||
| 11 |
CJ Corporationcj.net
Global lifestyle company with divisions in food, biotechnology, logistics, retail, and entertainment promoting health, happiness, convenience worldwide. |
534 | |||
| 12 |
Seegene Inc.seegene.com
A global leader in molecular diagnostics, developing innovative tests and equipment to improve early diagnosis of ailments and quality of life worldwide |
504 | |||
| 13 |
Samyang Groupsamyang.com
A diversified company founded in 1924, specializing in chemicals, food, biopharmaceuticals, and packaging, focusing on innovation and global expansion |
503 | |||
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. | |||||
| 14 |
Hanmi Pharmaceuticalshanmi.co.kr
A leading pharmaceutical company based in Seoul, South Korea, renowned for developing and selling over 200 products globally, with a strong focus on R&D investments |
500 | |||
| 15 |
SK chemicalsskchemicals.com
The company manufactures chemical products including PETG and PET resins for various industries, as well as life science products like anti-cancer agents and vaccines |
491 | |||
| 16 |
HANDOKhandok.co.kr
A leading pharmaceutical/healthcare innovator providing diverse healthcare solutions (prescription drugs, medical devices, in vitro diagnostics) with a focus on R&D and global expansion |
374 | |||
| 17 |
SD BIOSENSOR INCsdbiosensor.com
The company is dedicated to enhancing human health through the creation of groundbreaking products, prioritizing sustainable growth and community well-being |
365 | |||
| 18 |
International Vaccine Institute (IVI)ivi.int
A nonprofit organization focused on discovering, developing, and delivering safe and affordable vaccines to improve the health of vulnerable populations in developing countries |
355 | |||
| 19 |
Dong-A Pharmaceutical Co.,Ltddonga.co.kr
Leading South Korean pharmaceutical company specializing in developing, manufacturing, and distributing innovative healthcare products, including medicines, energy drinks, medical equipment, and bio-technology solutions |
354 | |||
| 20 | 327 | ||||
| 21 |
Huons Globalhuonsglobal.com
A leading healthcare group with a focus on pharmaceuticals, medical devices, health functional foods, and ESG sustainability practices for a better future |
308 | |||
| 22 |
HK inno-ninno-n.com
A leading pharmaceutical firm established in 1984, specializing in prescription drugs, active pharmaceutical ingredients, health supplements, and beauty products Committed to innovation and global growth |
213 | |||
| 23 |
Yuyu Pharmayuyu.co.kr
A healthcare company in Korea, publicly traded since 1975, manufacturing, distributing, and marketing pharmaceutical products, medical devices, and medical foods |
208 | |||
| 24 |
QuantaMatrixquantamatrix.com
Developing advanced diagnostic technologies focused on accelerating patient result times to improve healthcare outcomes and save lives. |
73 | |||
| 25 |
Caregen Co. Ltdcaregen.com
Global biotechnology company specializing in peptide research and development, offering innovative peptide-based products across various industries for health and beauty solutions worldwide |
31 | |||
| 26 |
SFC Co., Ltd.sfcprobes.com
A South Korean company specializing in OLED raw materials, fluorescent dyes, oligonucleotides, and oligo API CDMO services for molecular diagnostics |
29 | |||
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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 12, 2026.
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