Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS 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, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (0 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Total H Index Rankings

Rankings

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166,496
World Rank
Iran
1,572
Country Rank
University of Birjand Logo
3
University
Ranking Based On Selection:
1
Natural Sciences / Chemical Sciences
Organic Chemistry | Catalysis | Asymmetric reaction

H-Index Metrics

  • H-Index
    38
  • i10 Index
    87
  • Citation Counts
    3,999
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* Total H Index Rankings

Rankings

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207,920
World Rank
Iran
2,214
Country Rank
University of Birjand Logo
4
University
Ranking Based On Selection:
2

H-Index Metrics

  • H-Index
    34
  • i10 Index
    65
  • Citation Counts
    3,271
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* Total H Index Rankings

Rankings

flag
216,112
World Rank
Iran
2,339
Country Rank
University of Birjand Logo
5
University
Ranking Based On Selection:
3

H-Index Metrics

  • H-Index
    33
  • i10 Index
    99
  • Citation Counts
    3,505
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* Total H Index Rankings

Rankings

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248,312
World Rank
Iran
2,906
Country Rank
University of Birjand Logo
6
University
Ranking Based On Selection:
4
Natural Sciences / Chemical Sciences
Organic Chemistry | catalysi

H-Index Metrics

  • H-Index
    31
  • i10 Index
    76
  • Citation Counts
    2,797
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* Total H Index Rankings

Rankings

flag
248,343
World Rank
Iran
2,908
Country Rank
University of Birjand Logo
7
University
Ranking Based On Selection:
5
Natural Sciences / Chemical Sciences
Inorganic Chemistry | Catalysi

H-Index Metrics

  • H-Index
    31
  • i10 Index
    73
  • Citation Counts
    2,709
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* Total H Index Rankings

Rankings

flag
322,828
World Rank
Iran
4,246
Country Rank
University of Birjand Logo
9
University
Ranking Based On Selection:
6
Natural Sciences / Chemical Sciences
Organic Chemistry Phytochemistry and Natural Chemistr

H-Index Metrics

  • H-Index
    26
  • i10 Index
    41
  • Citation Counts
    2,109
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* Total H Index Rankings

Rankings

flag
428,492
World Rank
Iran
6,714
Country Rank
Birjand University of Technology Logo
2
University
Ranking Based On Selection:
7
Natural Sciences / Chemical Sciences
Organic reactions | Ionic liquid | Nanomaterials | Removal of pollution

H-Index Metrics

  • H-Index
    22
  • i10 Index
    34
  • Citation Counts
    1,476
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* Total H Index Rankings

Rankings

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428,959
World Rank
Iran
6,721
Country Rank
University of Birjand Logo
18
University
Ranking Based On Selection:
8
Natural Sciences / Chemical Sciences
Analytical Chemistry | Chromatography | Microextraction | MIP Sensors | Optimizatio

H-Index Metrics

  • H-Index
    22
  • i10 Index
    31
  • Citation Counts
    1,550
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* Total H Index Rankings

Rankings

flag
442,630
World Rank
Iran
6,953
Country Rank
University of Birjand Logo
19
University
Ranking Based On Selection:
9
Natural Sciences / Chemical Sciences
Organic Chemistry | Catalysis | Nanomaterial | Metal-Organic Frameworks | Ionic Liquid

H-Index Metrics

  • H-Index
    21
  • i10 Index
    34
  • Citation Counts
    965
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* Total H Index Rankings

Rankings

flag
481,211
World Rank
Iran
7,842
Country Rank
Birjand University of Technology Logo
3
University
Ranking Based On Selection:
10
Natural Sciences / Chemical Sciences
Graphene | Ionic Liquids | Deep Eutectic Solvents | Catalyst | Battery-electrolyte

H-Index Metrics

  • H-Index
    20
  • i10 Index
    38
  • Citation Counts
    1,416
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* Total H Index Rankings

Rankings

flag
598,753
World Rank
Iran
10,913
Country Rank
University of Birjand Logo
39
University
Ranking Based On Selection:
11
Natural Sciences / Chemical Sciences
Materials Chemistry | Green Chemistry | Nanomaterials & Nanocomposites | Environmental Chemistr

H-Index Metrics

  • H-Index
    17
  • i10 Index
    22
  • Citation Counts
    1,103
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* Total H Index Rankings

Rankings

flag
607,753
World Rank
Iran
11,184
Country Rank
University of Birjand Logo
43
University
Ranking Based On Selection:
12
Natural Sciences / Chemical Sciences
Developing nanomaterials for environmental protectio

H-Index Metrics

  • H-Index
    17
  • i10 Index
    21
  • Citation Counts
    746
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* Total H Index Rankings

Rankings

flag
672,972
World Rank
Iran
12,725
Country Rank
University of Birjand Logo
49
University
Ranking Based On Selection:
13

H-Index Metrics

  • H-Index
    15
  • i10 Index
    21
  • Citation Counts
    682
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* Total H Index Rankings

Rankings

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733,134
World Rank
Iran
14,238
Country Rank
University of Birjand Logo
56
University
Ranking Based On Selection:
14
Natural Sciences / Chemical Sciences
Computational modeling and simulation | Quantum Chemistry | Computational Chemistry | Density Functional Theory | Hydrogen Bondin

H-Index Metrics

  • H-Index
    14
  • i10 Index
    17
  • Citation Counts
    568
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* Total H Index Rankings

Rankings

flag
769,261
World Rank
Iran
14,915
Country Rank
University of Birjand Logo
62
University
Ranking Based On Selection:
15
Natural Sciences / Chemical Sciences
Reticular Chemistry | Metal-Organic Framework | Catalysis | photocatalysi

H-Index Metrics

  • H-Index
    13
  • i10 Index
    16
  • Citation Counts
    436
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* Total H Index Rankings

Rankings

flag
769,865
World Rank
Iran
14,922
Country Rank
University of Birjand Logo
63
University
Ranking Based On Selection:
16
Natural Sciences / Chemical Sciences
Analytical chemistry | Electrochemical sensors | Separation

H-Index Metrics

  • H-Index
    13
  • i10 Index
    15
  • Citation Counts
    1,063
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* Total H Index Rankings

Rankings

flag
774,472
World Rank
Iran
15,009
Country Rank
Birjand University of Medical Sciences Logo
33
University
Ranking Based On Selection:
17
Natural Sciences / Chemical Sciences
electrochemical and optical sensor

H-Index Metrics

  • H-Index
    13
  • i10 Index
    13
  • Citation Counts
    775
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* Total H Index Rankings

Rankings

flag
862,611
World Rank
Iran
16,907
Country Rank
University of Birjand Logo
80
University
Ranking Based On Selection:
18
Natural Sciences / Chemical Sciences
Radiochemistry | Organic chemistry | Nan

H-Index Metrics

  • H-Index
    12
  • i10 Index
    13
  • Citation Counts
    583
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* Total H Index Rankings

Rankings

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989,292
World Rank
Iran
19,200
Country Rank
University of Birjand Logo
99
University
Ranking Based On Selection:
19

H-Index Metrics

  • H-Index
    10
  • i10 Index
    10
  • Citation Counts
    285
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* Total H Index Rankings

Rankings

flag
1,139,120
World Rank
Iran
22,027
Country Rank
University of Birjand Logo
119
University
Ranking Based On Selection:
20
Natural Sciences / Chemical Sciences
Organic synthesis | nano bifunctional catalyst | polymer chemistr

H-Index Metrics

  • H-Index
    8
  • i10 Index
    8
  • Citation Counts
    283
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* Total H Index Rankings

Rankings

flag
1,253,897
World Rank
Iran
24,157
Country Rank
University of Birjand Logo
132
University
Ranking Based On Selection:
21
Natural Sciences / Chemical Sciences
Organic Synthesis | Nanomaterials | Polymer Chemistr

H-Index Metrics

  • H-Index
    7
  • i10 Index
    7
  • Citation Counts
    242
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* Total H Index Rankings

Rankings

flag
1,411,876
World Rank
Iran
27,228
Country Rank
University of Birjand Logo
149
University
Ranking Based On Selection:
22
Natural Sciences / Chemical Sciences
Organic Chemistry | Natural Product | Essential Oil | Nano Syntheses Antioxidant Activity Antibacterial Activity Flavonoids | Phyto

H-Index Metrics

  • H-Index
    6
  • i10 Index
    5
  • Citation Counts
    170
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* Total H Index Rankings

Rankings

flag
1,514,128
World Rank
Iran
29,597
Country Rank
Birjand University of Medical Sciences Logo
79
University
Ranking Based On Selection:
23

H-Index Metrics

  • H-Index
    6
  • i10 Index
    5
  • Citation Counts
    134
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* Total H Index Rankings

Rankings

flag
2,192,673
World Rank
Iran
46,078
Country Rank
University of Birjand Logo
207
University
Ranking Based On Selection:
24
Natural Sciences / Chemical Sciences
Computational Chemistr

H-Index Metrics

  • H-Index
    2
  • i10 Index
    2
  • Citation Counts
    29
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* Total H Index Rankings

Rankings

flag
2,221,520
World Rank
Iran
46,938
Country Rank
University of Birjand Logo
212
University
Ranking Based On Selection:
25

H-Index Metrics

  • H-Index
    2
  • i10 Index
    1
  • Citation Counts
    32
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