Yemen's Top 2% Scientists 2026
Yemen has 33 scientists on the 2026 single-year Top 2% list, up 43.5% from 23 in 2025. That places Yemen 90th in the world by number of listed scientists, up 3 places. Taiz University has the most listed scientists (11), followed by Thamar University (5).
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% |
| 2026 | 33 | +43.5% | 5 | +25.0% |
Top 10 institutes in Yemen
By number of listed scientists
All 33 scientists
Showing the 2026 single-year list. Looking for career rankings? See the career-long list
| Rank in Yemen | World rank | Scientist | Institute | Sub-field | Rank in sub-field |
|---|---|---|---|---|---|
| 1 | 21,029 | Higher Institute of Medical Sciences | Environmental Sciences | Rank 467 | |
| 2 | 25,624 | Sana'a University | General Mathematics | Rank 109 | |
| 3 | 29,418 | Ibb University | Networking & Telecommunications | Rank 311 | |
| 4 | 45,879 |
RA
|
Saadah University | Applied Physics | Rank 839 |
| 5 | 55,927 | Thamar University | Dentistry | Rank 245 | |
| 6 | 57,517 | University of Science and Technology | Chemical Physics | Rank 684 | |
| 7 | 73,147 | Taiz University | Networking & Telecommunications | Rank 796 | |
| 8 | 90,661 | Al-Razi University | Toxicology | Rank 303 | |
| 9 | 96,776 | Taiz University | Environmental Sciences | Rank 2,229 | |
| 10 | 101,235 | Sana'a University | Applied Physics | Rank 1,828 | |
| 11 | 120,825 | Taiz University | Finance | Rank 484 | |
| 12 | 139,116 | Thamar University | Applied Physics | Rank 2,490 | |
| 13 | 145,040 | Ibb University | Applied Physics | Rank 2,597 | |
| 14 | 148,771 | Taiz University | Inorganic & Nuclear Chemistry | Rank 525 | |
| 15 | 149,173 | Thamar University | Applied Physics | Rank 2,691 | |
| 16 | 159,349 | Ibb University | Food Science | Rank 2,408 | |
| 17 | 162,143 | Taiz University | Polymers | Rank 1,691 | |
| 18 | 172,891 |
HK
|
Taiz University | General & Internal Medicine | Rank 2,236 |
| 19 | 179,150 | Seiyun University | Applied Mathematics | Rank 438 | |
| 20 | 192,938 | Thamar University | Artificial Intelligence & Image Processing | Rank 8,696 | |
| 21 | 198,719 | Sana'a Community College | Energy | Rank 6,455 | |
| 22 | 199,150 | Taiz University | Networking & Telecommunications | Rank 2,445 | |
| 23 | 210,674 | Hudida University | Artificial Intelligence & Image Processing | Rank 9,416 | |
| 24 | 227,996 | Taiz University | Geology | Rank 227 | |
| 25 | 239,874 | Taiz University | General Mathematics | Rank 1,249 | |
| 26 | 242,416 | University of Aden | Medicinal & Biomolecular Chemistry | Rank 1,150 | |
| 27 | 259,816 | University of Modern Sciences (UMS) | Artificial Intelligence & Image Processing | Rank 11,531 | |
| 28 | 273,307 | Al Janad University for Science and Technology | Networking & Telecommunications | Rank 3,422 | |
| 29 | 290,040 | Taiz University | Networking & Telecommunications | Rank 3,652 | |
| 30 | 373,575 | Ibb University | Dentistry | Rank 1,905 | |
| 31 | 393,802 | Thamar University | Dentistry | Rank 2,012 | |
| 32 | 473,457 | Albaydha University | Inorganic & Nuclear Chemistry | Rank 1,986 | |
| 33 | 484,923 | Taiz University | General Chemistry | Rank 917 | |
| No scientists match this filter on the single-year list. Try the career-long list | |||||
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Frequently asked questions
How many scientists from Yemen are in the 2026 Stanford Top 2% list?
33 scientists affiliated with Yemen are on the 2026 single-year list, and 5 are on the career-long list.
Which institute in Yemen has the most Top 2% scientists?
On the 2026 single-year list, Taiz University has the most listed scientists from Yemen, with 11. It is followed by Thamar University with 5.
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 33 in 2026, a change of +725.0%.
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.