SK Hynix Inc. (Korean: 에스케이하이닉스 주식회사), stylized SK hynix, is a South Korean semiconductor company that manufactures dynamic random-access memory (DRAM) chips and flash memory chips. SK Hynix is one of the world's largest semiconductor vendors,[2][3] and along with Samsung Electronics and Micron is one of the "Big Three" memory manufacturers.[4]

Founded in 1983 as Hyundai Electronics, SK Hynix was integrated into the SK Group in 2012 following a series of mergers, acquisitions, and restructuring efforts. After being incorporated into the SK Group, SK Hynix became a major affiliate alongside SK Innovation and SK Telecom.[5]

The company's major customers include Microsoft, Apple,[6] Asus, Dell, MSI, HP Inc., and Hewlett Packard Enterprise (formerly Hewlett-Packard).[2] Other products that use Hynix memory include DVD players, cellular phones, set-top boxes, personal digital assistants, networking equipment, and hard disk drives.