Kioxia
Japan's NAND flash memory maker, formerly Toshiba Memory. Toshiba invented NAND flash, and Kioxia continues that line with BiCS FLASH 3D NAND produced in Mie and Iwate. It listed on the Tokyo Stock Exchange in December 2024.
キオクシア・Chipmakers・Last updated: October 15, 2026
Overview
Kioxia was separated from Toshiba as Toshiba Memory and renamed in 2019. It is headquartered in Tokyo.
Its fabs in Yokkaichi (Mie) and Kitakami (Iwate) are operated in a joint venture with its long-time partner, formerly part of Western Digital and now SanDisk.
Business: NAND flash memory and SSDs
Why it matters
Yokkaichi is one of the largest NAND production sites in the world, and Kitakami extends that capacity in the Tohoku region.
Kioxia's capital spending is a major source of demand for Japanese equipment makers such as Tokyo Electron and Kokusai Electric.
Main products
- •3D NAND flash memory (BiCS FLASH)
- •Enterprise, data center and client SSDs
- •Embedded flash (UFS, e-MMC)
Sites in Japan
Head officeHeadquarters
Tokyo
Yokkaichi plantPlant
Yokkaichi, Mie
Kitakami plantPlant
Kitakami, Iwate