The Iwatani Naoji Foundation (公益財団法人岩谷直治記念財団) is a private foundation founded by Iwatani Naoji, the founder of Iwatani Corporation, supporting international STEM graduate students from Asian countries at Japanese universities. The foundation reflects its industrial-energy heritage: scholarship awards prioritize research in energy, materials science, chemical engineering, and applied physics. With a monthly stipend of ¥120,000 for 24 months and a clear thematic focus, Iwatani Naoji is one of the strongest STEM-targeted private scholarships available to Asian master's and doctoral candidates in Japan. For the 2027 cycle the foundation continues its existing structure with applications opening in late summer 2026.
The STEM-energy focus
Iwatani Naoji is unusually focused for a Japanese private foundation. The award explicitly prioritizes research in energy generation and storage, gas chemistry, hydrogen technology, materials science, mechanical engineering, and chemical engineering. Applicants in adjacent fields like applied physics, semiconductor engineering, and battery research are also competitive. Pure mathematics, theoretical physics, and biological sciences without an applied-energy angle are less likely to convert. Computer science and AI applicants whose research applies to energy systems, smart grids, or industrial process optimization fit the foundation's profile well. Our guide on studying AI and ML in Japan illustrates the kinds of research directions that intersect productively with energy and industrial applications.
Country eligibility
The foundation supports applicants from China, Korea, Vietnam, Indonesia, Thailand, and Malaysia. Applicants from outside this country list are not eligible. There are no fixed country quotas — selection is purely competitive on academic merit and research fit. Country guides for our most-represented Iwatani Naoji nationalities include MEXT for Vietnamese students and MEXT for Indonesian students, both of which compare alternative funding routes for STEM applicants.
Funding stack and timing
Iwatani Naoji is paired most often with a national-university tuition waiver. The standard funding stack for a doctoral STEM recipient is Iwatani Naoji stipend + 100% tuition reduction at a national university like Tohoku, Osaka, Kyoto, or Tokyo. The foundation is not compatible with MEXT, JDS, or other full-funding government scholarships. For engineering doctoral applicants, our engineering doctorate Japan real path guide walks through several Iwatani-paired funding stacks. Browse all scholarships to identify other STEM-focused options that complement Iwatani Naoji.