Yemen's Top 2% Scientists 2025
Yemen has 23 scientists on the 2025 single-year Top 2% list, up 91.7% from 12 in 2024. That places Yemen 93rd in the world by number of listed scientists, up 6 places. Taiz University has the most listed scientists (10), followed by Thamar University (3).
Scientists in Yemen on the list, by year
The single-year count has more than tripled since 2020.
Show the numbers
| Year | Single Year | Change | Career Data | Change |
|---|---|---|---|---|
| 2020 | 4 | 1 | ||
| 2021 | 8 | +100.0% | 1 | +0.0% |
| 2022 | 7 | -12.5% | 1 | +0.0% |
| 2023 | 7 | +0.0% | 3 | +200.0% |
| 2024 | 12 | +71.4% | 3 | +0.0% |
| 2025 | 23 | +91.7% | 4 | +33.3% |
Institutes in Yemen
By number of listed scientists
Show the list
All 23 scientists
| Rank in Yemen | World rank | Scientist | Institute | Sub-field | Rank in sub-field |
|---|---|---|---|---|---|
| 1 | 11,661 | Sana'a University | General Mathematics | Rank 39 | |
| 2 | 31,802 | Taiz University | Environmental Sciences | Rank 697 | |
| 3 | 44,660 | Thamar University | Dentistry | Rank 191 | |
| 4 | 47,243 | Ibb University | Networking & Telecommunications | Rank 531 | |
| 5 | 67,395 | Taiz University | Networking & Telecommunications | Rank 762 | |
| 6 | 73,956 |
RA
|
Sadaah University | Applied Physics | Rank 1,391 |
| 7 | 74,845 | Taiz University | Applied Mathematics | Rank 193 | |
| 8 | 111,948 | Al-Razi University | Chemical Engineering | Rank 972 | |
| 9 | 117,717 | Taiz University | Polymers | Rank 1,184 | |
| 10 | 129,918 | Al-Razi University | Toxicology | Rank 493 | |
| 11 | 149,864 | Sana'a University | Applied Physics | Rank 2,847 | |
| 12 | 174,241 | Taiz University | Organic Chemistry | Rank 2,341 | |
| 13 | 193,948 | Sana'a Community College | Energy | Rank 6,224 | |
| 14 | 202,969 | Taiz University | Inorganic & Nuclear Chemistry | Rank 827 | |
| 15 | 209,058 | Hudida University | Artificial Intelligence & Image Processing | Rank 8,648 | |
| 16 | 213,710 | Taiz University | Geology | Rank 246 | |
| 17 | 240,063 | Ibb University | Polymers | Rank 2,629 | |
| 18 | 248,168 | Taiz University | General Mathematics | Rank 1,298 | |
| 19 | 290,542 |
SA
|
Thamar University | Applied Physics | Rank 5,765 |
| 20 | 315,675 | Taiz University | Networking & Telecommunications | Rank 4,060 | |
| 21 | 321,363 | Thamar University | Applied Physics | Rank 6,403 | |
| 22 | 409,219 | University of Aden | Medicinal & Biomolecular Chemistry | Rank 2,222 | |
| 23 | 420,777 |
HK
|
Taiz University | General & Internal Medicine | Rank 4,721 |
| No scientists match this filter. | |||||
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Frequently asked questions
How many scientists from Yemen are in the 2025 Stanford Top 2% list?
23 scientists affiliated with Yemen are on the 2025 single-year list, and 4 are on the career-long list.
Which institute in Yemen has the most Top 2% scientists?
On the 2025 single-year list, Taiz University has the most listed scientists from Yemen, with 10. It is followed by Thamar University with 3.
How has the number of Top 2% scientists in Yemen changed since 2020?
On the single-year list, Yemen went from 4 scientists in 2020 to 23 in 2025, a change of +475.0%.
What is the difference between the single-year and career-long lists?
The single-year list ranks scientists on the citations their work received in one year. The career-long list ranks them on citations across their whole career. Both lists are published every year, and a scientist can be on one, both or neither.
What is the official source of this data?
The rankings come from the science-wide author databases of standardized citation indicators published by Ioannidis et al. in the Elsevier Data Repository, updated every year. TOPSCINET, an independent platform, organises that data by country, year, institute and field, so you can compare and explore it.