Largest Japanese Semiconductor Companies
Japan's largest semiconductor companies ranked by semiconductor revenue, not total group sales. Tokyo Electron, Kioxia and Sony's image sensor business each had more than 2 trillion yen in the latest fiscal year.
- Companies ranked9
- Over ¥1 trillion5
How this ranking works
Many rankings of "Japanese chip companies" use total group sales. That puts Shin-Etsu Chemical, whose sales include PVC, or Sony, whose sales include games and music, far above their actual chip businesses. This ranking uses only semiconductor revenue: companies whose sales are almost entirely semiconductors, or the semiconductor segment where a company reports one separately.
Fiscal years differ by company (most end in March, Renesas and SUMCO end in December), so the period is shown for each row. Figures are as reported by each company.
Ranking by semiconductor revenue
Almost all sales are semiconductor equipment. Sales rose 0.5% to a record, while operating income fell to 624.9 billion yen.
NAND flash. Sales rose sharply as SSD demand from AI-related data centers lifted prices and volumes.
Segment sales of Sony Group, centered on CMOS image sensors.
Microcontrollers and SoCs. Revenue fell 2.0%; a Wolfspeed-related charge led to a net loss of 51.8 billion yen.
Test equipment. Sales rose about 45% on testers for AI chips, the fastest growth among the companies listed here.
Wafer cleaning equipment. Sales fell 3.1% and operating income fell 9.7% to 122.5 billion yen.
Power and analog chips. A 193.6 billion yen impairment, mostly on SiC equipment, led to a net loss of 158.4 billion yen.
Dicing and grinding. Sales rose 11.1% and operating profit rose 10.9% to 185.0 billion yen.
Silicon wafers. Sales rose 3.3%, but higher depreciation cut operating profit to 1.3 billion yen.
Large companies not in the ranking
These companies are major players but do not report semiconductor revenue on its own.
- Shin-Etsu Chemical: The world's largest silicon wafer maker, but wafers are reported together with other electronics materials and its PVC business is larger.
- Mitsubishi Electric: A major power semiconductor maker, but semiconductors are part of a much larger electrical equipment group.
- Resonac: Semiconductor materials are reported within a wider chemicals portfolio.
Sources
- Tokyo Electron IR library
- Kioxia Holdings Annual Securities Report FY2025
- Sony Group FY2025 Q4 earnings presentation
- Renesas: results for the year ended December 31, 2025
- Advantest FY2025 financial results
- SCREEN Holdings IR library
- ROHM financial results release (May 12, 2026)
- DISCO consolidated financial results
- SUMCO IR library
Last updated: October 22, 2026