How to Find a PhD Supervisor in Japan (and Get Funded)

Most guides to funding a PhD in Japan jump straight to the MEXT scholarship's paperwork, the Letter of Provisional Acceptance, the two application routes, the stipend amount. All of that matters once you already know which professor you're targeting. What those guides skip is the part that comes first: how you actually find the right university and the right professor in a country where there's no central directory of "professors accepting PhD students," and no shortcut around doing the search yourself.

Start with JASSO's university search, not a Google search

The Japan Student Services Organization runs a university search tool that lets you filter accredited Japanese universities by field of study, which is a far more reliable starting point than searching generically for "PhD in [your field] Japan" and hoping a relevant program surfaces. This gets you a list of universities that actually offer your field, but it stops there, it won't tell you which professor inside that university's graduate school is the right fit, or whether they have room for a new student. That part is on you, and it's also the part every Japan-specific guide tends to gloss over in a single sentence.

Finding the actual professor: faculty pages and researcher directories

Once you've shortlisted universities through JASSO, the next step is going directly to each university's graduate school website and its faculty or researcher directory. Japanese universities don't centrally recommend supervisors to applicants, the responsibility for identifying and selecting an academic advisor sits with you. Look for a professor whose recent, actively published work is genuinely close to your own research interests, not just someone whose department name matches your field. A generic message to a professor whose last relevant paper is a decade old reads very differently from one that references something they published in the last year or two.

Check KAKEN before you email: is this professor actually funded right now

This is the step most guides to Japan never mention, and it's the single most useful filter available. KAKEN is a public database, run by Japan's National Institute of Informatics in cooperation with MEXT and the Japan Society for the Promotion of Science, that archives every Grant-in-Aid for Scientific Research (Kakenhi) project. Search a professor's name and you can see whether they currently hold an active Kakenhi grant, what category and amount it's funded at, and what the project's actual research abstract says they're working on.

A professor with a current, active Kakenhi grant has real, running lab resources right now, which matters because a professor with no active funding may simply not have the budget or capacity to take on a new student, however good the fit looks on paper. Checking KAKEN before you invest time drafting a personalized outreach email is a five-minute filter that separates labs worth prioritizing from ones where your email is more likely to go unanswered for reasons that have nothing to do with your application.

Why the professor's agreement has to come before most Japanese funding routes

Whichever funding route you end up pursuing, MEXT's University Recommendation track, a university's own tuition waiver, or a research-assistant position paid out of a professor's own Kakenhi grant, the pattern is the same: you need a specific professor's agreement to supervise you before that funding can actually be secured, not after. For the MEXT route specifically, that agreement gets formalized as a document often called by its Japanese name, naidaku, a Letter of Provisional Acceptance. Our full MEXT application walkthrough covers that document and the two MEXT routes in detail. What this post covers is what comes before that letter even becomes relevant: identifying the right professor in the first place.

Reaching out: timing and what to include

Email potential supervisors well ahead of any application deadline, several months is standard, since Japanese academic email culture tends to run slower and more formal than what applicants from some other countries are used to. A first email should include a concise account of your academic background, your specific research interests, and, ideally, a short note on why their particular recent work interests you rather than a generic statement that could apply to any professor in the field. Contact more than one professor in parallel rather than waiting weeks for a single reply before trying anyone else, since a professor going quiet or already having a student in mind for that year doesn't reflect on your qualifications.

The lab visit, or its video-call substitute

A research lab visit, referred to as kengaku, is a genuinely common step in Japanese academic culture once a professor is seriously considering you, particularly in lab-based science and engineering fields. It isn't a formal requirement for most funding routes, and it isn't always logistically realistic before you've secured a visa or the funds to travel. Where an in-person visit isn't practical, proposing a video call covering the same ground, what the lab is currently working on, what a realistic project under this professor might look like, is an accepted substitute, and it's worth proposing yourself rather than waiting for the professor to suggest it.

Beyond MEXT: other funding worth checking once you have a professor

MEXT is the flagship national scholarship, but it's not the only door into a funded PhD in Japan. JASSO separately administers a scholarship aimed at privately financed international students already enrolled at a Japanese university, distinct from the MEXT program itself, and many universities run internal tuition waivers or research-assistant positions on top of both. A professor whose KAKEN record shows active, well-funded projects may be able to bring you on as a research assistant paid out of their own grant, entirely separate from MEXT's own application cycle. This is another reason the KAKEN check matters early: it can open funding paths a MEXT-only search would never surface.

A practical search order

• Use JASSO's university search tool to shortlist accredited universities offering your field.
• Go through each university's graduate school faculty directory to identify professors actively publishing in your specific subfield.
• Check each candidate professor on KAKEN to confirm they hold active, current Kakenhi funding before you prioritize your outreach.
• Email your strongest matches directly, referencing their specific recent work, several months ahead of any deadline, and follow up with a lab visit or video call once a professor is seriously engaged.
• Once you have an agreed supervisor, confirm which specific funding route, MEXT, a university tuition waiver, or the professor's own project funding, actually applies to your situation.

GradScoutFunding is built for that identification and outreach step: it searches professors by field and country, confirms they're actively publishing, and drafts a personalized first email grounded in their real recent paper for you to review and send yourself. It can't confirm a specific professor has Kakenhi funding or capacity for a new student, that's what KAKEN and a direct email are for, but it removes the manual work of finding and researching each candidate one at a time. The free tier gives 2 credits with no card required, and paid credit packs are one-time purchases that never expire.

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