Four routes, and the only real difference is the gate
One charges no application fee, needs no nomination, and states that a physics degree is not strictly required — and it is open right now. Another refuses applications from students entirely and will not let you leave the developing world with its money. A third wants a master’s before it will look at you. Read the gates and three of these four sort themselves out in a minute.
4 routes · 1 open now · checked 20 October 2026
What this field is really sorted by
Not prestige, not subject, and not money. Who is allowed to apply.
Physics and mathematics funding for students from developing countries is unusually generous and unusually badly explained. The programmes are real, the money is real, and almost every listing describes them as though they were interchangeable. They are not. Each one puts a different barrier in front of you, and once you can see the barriers, your own shortlist writes itself.
Perimeter Scholars International sits at one extreme. There is no application fee, no nomination, and Perimeter states plainly that a physics degree is not strictly required, describing the programme as open to applicants with diverse and non-traditional academic backgrounds who demonstrate exceptional scientific talent. It is also a genuine Master of Science from the University of Waterloo rather than a certificate.
The IMU Breakout Graduate Fellowship sits at the other. The International Mathematical Union states it in one line: individual PhD candidates cannot apply themselves. A professional mathematician has to nominate you, and that professor needs a doctorate, a university or research-centre post, and current supervision of mathematics master’s or PhD students. There is a second restriction that quietly disqualifies people, and it is the opposite of what you would guess. The fellowship funds your PhD inside the developing world, including at a Pakistani university, and the rules forbid taking it to a non-developing country. A split PhD with a European partner, however prestigious the partner, ends the application.
ICTP’s Postgraduate Diploma sits between the two. Anyone from a developing country may apply, with no nomination at all, but it wants a degree equivalent to an MSc, and you apply to exactly one of its subject streams rather than to the programme in general. ICTP also asks for fluency in English without naming a test score, which is rarer and more useful than it sounds. If your English is strong but untested, that helps you here in a way it does not elsewhere, and our scholarships without IELTS page covers the wider set of routes that work the same way.
You apply yourself
Three routes that take an application directly from the student.
| Guide | What it actually is | Country | Deadline |
|---|---|---|---|
| Perimeter Scholars International | Ten months at the Perimeter Institute in Waterloo, Ontario, ending with an MSc from the University of Waterloo. No application fee. Full financial support for most admitted students, including help with travel and immigration. Four items to submit, with a 5,000-character limit on the written part. | Canada | Open now. Last cycle used 1 February for first consideration. |
| ICTP Diploma, Earth System Physics | The climate, atmosphere, ocean and solid-Earth stream of ICTP’s diploma. Three terms, eight to ten courses, about ten lecture hours a week, and a dissertation defended orally. Built as a bridge into a PhD rather than a destination. | Italy | 15 March |
| ICTP Postgraduate Diploma | The full programme behind that stream, running five subject areas at roughly ten places each, so near fifty places a year. Wants a degree equivalent to an MSc. Selection rests on your transcript and two academic references. | Italy | Both of last cycle’s dates have passed. The next call should appear in early February 2027. |
One honest caveat belongs with the Perimeter row, because the two rules there do not quite agree. Perimeter says a physics degree is not strictly required, while enrolment in the Waterloo MSc normally expects an undergraduate degree in physics or a related field. If that describes you, write to Perimeter and ask about your own case rather than assuming either way. The same applies to ICTP if you hold a four-year BS rather than an MSc: email the diploma office directly and let them assess it, because no scholarship site can answer that for you.
Note also what “full financial support for most admitted students” leaves open. Most is not all, and Perimeter does not itemise what the support covers. Ask before you build a year around it, and keep our Canada scholarships page as a second plan.
A professor has to nominate you
One route, and it is the only one here that funds a doctorate at home.
| Guide | How it actually works | Where you study | Deadline |
|---|---|---|---|
| IMU Breakout Graduate Fellowship | Up to US$10,000 a year for up to four years, or until the PhD finishes. A professional mathematician nominates you; students cannot nominate themselves. No joint programmes with institutions in non-developing countries, which is the rule that disqualifies people quietly. | Your own country, or anywhere in the developing world | The 2026 call closed 30 May. The next is expected in early 2027. |
Put that figure in context before you judge it. Ten thousand US dollars a year does not go far in London. In Lahore, Karachi or Islamabad it funds a doctorate properly, and it does so while you stay near your family, keep your language, and build a research group that remains in the country afterwards. That is the entire point of the fellowship, and it explains the restriction rather than excusing it. If a funded PhD abroad is what you want instead, our PhD scholarships guide covers those routes.
The gates, side by side
The table to read before you start any of these applications.
| Perimeter PSI | ICTP Diploma | IMU Breakout | |
|---|---|---|---|
| Who may apply | Anyone | Anyone from a developing country | Nobody. A professor nominates |
| Application fee | None | Not charged | Not applicable |
| Degree needed | Physics degree not strictly required | MSc-equivalent | Master’s-level, in mathematics |
| Subject | Theoretical physics | Five streams, physics and mathematics | Mathematics only |
| English test | Not required for the application | Fluency, no score named | Not named |
| Referees | Three | Two | The nominator |
| Where you study | Canada | Italy | Developing world only |
| What it leads to | An MSc | A PhD application | The PhD itself |
Questions students ask about physics funding
The five that arrive most often.
I have a four-year BS, not an MSc. Can I apply to ICTP?
Possibly, and nobody online can tell you for certain. ICTP asks for a degree equivalent to an MSc, and how it assesses a Pakistani four-year BS is a question for ICTP’s diploma office rather than for a scholarship site. Email them directly in December, before the call opens, so you are not asking while the clock runs.
Do I really not need a physics degree for Perimeter?
Perimeter states that a physics degree is not strictly required and actively invites non-traditional backgrounds. The complication is that the Waterloo MSc you would enrol in normally expects physics or a related field. Those two statements sit side by side on official pages, so the honest answer is to ask Perimeter about your specific degree rather than ruling yourself in or out.
Why can I not apply for the IMU fellowship myself?
Because the IMU designed it that way. It invites professional mathematicians to nominate talented students, and it says in plain words that individual PhD candidates cannot apply themselves. Your work therefore starts with a conversation, not a form: identify a professor with a doctorate who currently supervises mathematics students and ask whether they will nominate you.
Can I take the IMU money to a European university?
No, and the rules say so outright rather than implying it. The fellowship funds a mathematics PhD inside the developing world. Even a joint programme with a non-developing-country institution ends the application. If studying abroad is the goal, this is the wrong route and you want the PhD or CSC guides instead.
Which of these should I apply to first?
Whichever one is open, which today means Perimeter. It costs nothing to apply, needs nobody’s permission, and the deadline pattern points at early February. ICTP’s call follows in early February and the Earth System Physics stream closes on 15 March, so a well-organised applicant can reasonably try all three in one season. The IMU route runs on a different clock entirely, because it starts with a professor.
Start here
The documents and comparisons these four applications share.
Asking for a reference letter
Perimeter wants three referees and ICTP selects largely on references. This is the slow part.
Documents
Scholarships without IELTS
ICTP asks for fluency without naming a score, and PSI needs no test for the application.
Route guide
PhD scholarships
Where the ICTP diploma is meant to take you, and the alternative if you want the doctorate abroad.
Route guide
Meteorology scholarships
The Earth System Physics stream sits on that page too, next to the WMO and NUIST routes.
Related field
Pick your ICTP stream deliberately, because you apply to one and only one. Choose the subject your degree and your actual interests support rather than the one that sounds most impressive, since selection rests on university performance and academic recommendations and a mismatched stream reads badly in both. ICTP extended its deadline in the last cycle, which is worth treating as luck rather than a pattern. And confirm every date on the funder’s own page before you apply: three of these four changed something in the last year, and CERN’s exclusion of Pakistani nationals for this intake is the clearest reminder that a route open last season may not be open now.