The ranking of “Top 100” scientists is based on total h-index scores. Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, EECA, BRICS, and COMESA based on total h-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, and Social Sciences. According to Total H. BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (829,221 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.
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![Yemen](/flags/ye.png)
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![Algeria](/flags/dz.png)
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![Saudi Arabia](/flags/sa.png)
![Hasnaa Hamdi Mohame Ali](/user/assets/images/profile/no-profile-photo.png)
![](https://cdn.adscientificindex.com/logos/11040.jpg)
![Saudi Arabia](/flags/sa.png)
![Mahmoud Hashim](/pictures/87/5287979.jpg)
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![Algeria](/flags/dz.png)
![Karadaniz Lamia](/pictures/25/5041323.jpg)
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![Egypt](/flags/eg.png)
![Ahmed Helmy](/pictures/b9/4921318.jpg)
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![Egypt](/flags/eg.png)
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![](/assets/images/world-icon.png)
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![](/assets/images/world-icon.png)
![Qatar](/flags/qa.png)
![](https://cdn.adscientificindex.com/logos/3141.png)
![](https://cdn.adscientificindex.com/logos/3141.png)
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![Lebanon](/flags/lb.png)
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![Qatar](/flags/qa.png)
![](https://cdn.adscientificindex.com/logos/7099.jpg)
![](https://cdn.adscientificindex.com/logos/7099.jpg)
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![Qatar](/flags/qa.png)
![](https://cdn.adscientificindex.com/logos/3141.png)
![](https://cdn.adscientificindex.com/logos/3141.png)
![](/assets/images/world-icon.png)
![Tunisia](/flags/tn.png)
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![](/assets/images/world-icon.png)
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![](https://cdn.adscientificindex.com/logos/7099.jpg)
![](https://cdn.adscientificindex.com/logos/7099.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
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![Oman](/flags/om.png)
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![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
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![](https://cdn.adscientificindex.com/logos/4924.jpg)
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![](https://cdn.adscientificindex.com/logos/30724.png)
![](https://cdn.adscientificindex.com/logos/30724.png)
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![Jordan](/flags/jo.png)
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![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4924.jpg)
![](https://cdn.adscientificindex.com/logos/4924.jpg)
![](/assets/images/world-icon.png)
![Tunisia](/flags/tn.png)
![](https://cdn.adscientificindex.com/logos/10585.png)
![](https://cdn.adscientificindex.com/logos/10585.png)
![](/assets/images/world-icon.png)
![Tunisia](/flags/tn.png)
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![](https://cdn.adscientificindex.com/logos/10526.png)
![](/assets/images/world-icon.png)
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![](https://cdn.adscientificindex.com/logos/25237.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/12139.png)
![](https://cdn.adscientificindex.com/logos/12139.png)
![](/assets/images/world-icon.png)
![Oman](/flags/om.png)
![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
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![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
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![](https://cdn.adscientificindex.com/logos/7030.jpg)
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![Oman](/flags/om.png)
![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4917.jpg)
![](https://cdn.adscientificindex.com/logos/4917.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10649.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/11414.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Oman](/flags/om.png)
![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](https://cdn.adscientificindex.com/logos/8574.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/3220.jpg)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10506.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/18384.jpg)
![](https://cdn.adscientificindex.com/logos/18384.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/5045.png)
![](https://cdn.adscientificindex.com/logos/5045.png)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4915.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/895.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10843.jpg)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Palestine](/flags/ps.png)
![](https://cdn.adscientificindex.com/logos/6717.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/26217.jpg)
![](https://cdn.adscientificindex.com/logos/26217.jpg)
![](/assets/images/world-icon.png)
![Yemen](/flags/ye.png)
![](https://cdn.adscientificindex.com/logos/13814.png)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/220.png)
![](https://cdn.adscientificindex.com/logos/220.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/14928.jpg)
![](https://cdn.adscientificindex.com/logos/14928.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/618.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/318.png)
![](https://cdn.adscientificindex.com/logos/318.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10964.jpg)
![](https://cdn.adscientificindex.com/logos/10964.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/5509.jpg)
![](https://cdn.adscientificindex.com/logos/5509.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/8242.png)
![](https://cdn.adscientificindex.com/logos/8242.png)
![](/assets/images/world-icon.png)
![Oman](/flags/om.png)
![](https://cdn.adscientificindex.com/logos/8220.jpg)
![](/assets/images/world-icon.png)
![Palestine](/flags/ps.png)
![](https://cdn.adscientificindex.com/logos/443.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/14758.png)
![](https://cdn.adscientificindex.com/logos/14758.png)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/7098.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10843.jpg)
![](https://cdn.adscientificindex.com/logos/10843.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/550.jpg)
![](https://cdn.adscientificindex.com/logos/550.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10854.jpg)
![](https://cdn.adscientificindex.com/logos/10854.jpg)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/273.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/273.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/5045.png)
![](https://cdn.adscientificindex.com/logos/5045.png)
![](/assets/images/world-icon.png)
![Libya](/flags/ly.png)
![](https://cdn.adscientificindex.com/logos/24750.jpg)
![](https://cdn.adscientificindex.com/logos/24750.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/11043.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/550.jpg)
![](https://cdn.adscientificindex.com/logos/550.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10843.jpg)
![](https://cdn.adscientificindex.com/logos/10843.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/318.png)
![](https://cdn.adscientificindex.com/logos/318.png)
![](/assets/images/world-icon.png)
![Tunisia](/flags/tn.png)
![](https://cdn.adscientificindex.com/logos/10588.png)
![](https://cdn.adscientificindex.com/logos/10588.png)
![](/assets/images/world-icon.png)
![Palestine](/flags/ps.png)
![](https://cdn.adscientificindex.com/logos/443.png)
![](https://cdn.adscientificindex.com/logos/443.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/12139.png)
![](https://cdn.adscientificindex.com/logos/12139.png)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/810.png)
![](https://cdn.adscientificindex.com/logos/810.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/263.jpg)
![](https://cdn.adscientificindex.com/logos/263.jpg)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/9103.png)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10550.png)
![](https://cdn.adscientificindex.com/logos/10550.png)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/30095.jpg)
![](https://cdn.adscientificindex.com/logos/30095.jpg)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10502.jpg)
![](https://cdn.adscientificindex.com/logos/10502.jpg)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10614.png)
![](/assets/images/world-icon.png)
![Palestine](/flags/ps.png)
![](https://cdn.adscientificindex.com/logos/988.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/14758.png)
![](https://cdn.adscientificindex.com/logos/14758.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/10854.jpg)
![](https://cdn.adscientificindex.com/logos/10854.jpg)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/14937.png)
![](/assets/images/world-icon.png)
![Qatar](/flags/qa.png)
![](https://cdn.adscientificindex.com/logos/7099.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/1857.png)
![](https://cdn.adscientificindex.com/logos/1857.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/11043.png)
![](https://cdn.adscientificindex.com/logos/11043.png)
![](/assets/images/world-icon.png)
![Jordan](/flags/jo.png)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](https://cdn.adscientificindex.com/logos/11099.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](/assets/images/world-icon.png)
![Iraq](/flags/iq.png)
![](https://cdn.adscientificindex.com/logos/11212.jpg)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10614.png)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](https://cdn.adscientificindex.com/logos/6982.png)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/10656.jpg)
![](https://cdn.adscientificindex.com/logos/10656.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/4917.jpg)
![](/assets/images/world-icon.png)
![Saudi Arabia](/flags/sa.png)
![](https://cdn.adscientificindex.com/logos/11040.jpg)
![](/assets/images/world-icon.png)
![Algeria](/flags/dz.png)
![](https://cdn.adscientificindex.com/logos/26326.jpg)
![](/assets/images/world-icon.png)
![Egypt](/flags/eg.png)
![](https://cdn.adscientificindex.com/logos/894.png)
![](https://cdn.adscientificindex.com/logos/894.png)