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 ranking in world, region, country and university is beta version since subject field "others" (873,863 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.

* Rankings
Ranking Based On Selection :1
Alireza Nezamzadeh Ejhieh
Analytical Chemistry
Zeolite Modified electrodes
Photodegradation and Environmental Researches.
Metrics
H-Index
i10 Index
Citation
83
206
16,062
* Rankings
Ranking Based On Selection :2
Mojtaba Bagherzadeh
Electrochemistry
Analytical Chemistry
Nanotechnology
Corrosion
Metrics
H-Index
i10 Index
Citation
29
41
2,554
* Rankings
Ranking Based On Selection :6
Amirabbas Nourbakhsh
Refractories
Electroceramics
Nanomaterials
Porous Materials
Geopolymers
Metrics
H-Index
i10 Index
Citation
20
28
1,348
* Rankings
Ranking Based On Selection :7
Nasrin Talebian
Nanostructured catalyst for antibacterial
Photodegradation
Bioactivity and Fuel Cell Applications
Metrics
H-Index
i10 Index
Citation
19
25
1,887
* Rankings
Ranking Based On Selection :12
Sanaz Naghibi
Bio Materials
Ceramic Thin Films & coating
TiO2
Optical Properties of Ceramics
Mechanochemical Process
Metrics
H-Index
i10 Index
Citation
15
21
682
* Rankings
Ranking Based On Selection :14
Saeed Taki
language teaching methods
discourse analysis
language and culture
ELT and technology
Metrics
H-Index
i10 Index
Citation
13
16
741
Aazam Aarabi
food chemistry
food packaging
food technology
functional food
Metrics
H-Index
i10 Index
Citation
9
9
367
Bahram Bahri
Clean Transportation
Heavy-Duty Vehicles
Internal Combustion Engines
Alternative fuels
Light-Duty Vehicles
Metrics
H-Index
i10 Index
Citation
9
9
581
Seyed Nezamoddin Mirsattari
magnetic nanoparticles and targeted drug delivery
Computational Chemistry
synthesis of transition metal complexes
catalyst
Metrics
H-Index
i10 Index
Citation
9
9
392
Maryam Tayebani
Organometallics
Inorganic Chemictry
Medicinal Chemistry
Bioinorganic Chemistry
Metrics
H-Index
i10 Index
Citation
9
9
257
Nafiseh Pourshirband
Analytical Chemistry
Zeolite Modified Electrodes
Photodegradation and Environmental
Metrics
H-Index
i10 Index
Citation
6
6
313
Raana Sheikhsamany
Catalyst
Photodegradation
Enviremental Research
Nanocamposites
Metal Organic Framework
Metrics
H-Index
i10 Index
Citation
6
4
94
Rankings
Ranking Based On Selection: 1
Alireza Nezamzadeh Ejhieh
Metrics
H-Index
i10 Index
Citation Counts
83
206
16,062
Analytical Chemistry
Zeolite Modified electrodes
Photodegradation and Environmental Researches.
Rankings
Ranking Based On Selection: 2
Mojtaba Bagherzadeh
Metrics
H-Index
i10 Index
Citation Counts
29
41
2,554
Electrochemistry
Analytical Chemistry
Nanotechnology
Corrosion
Rankings
Ranking Based On Selection: 3
Ahmad Reza Massah
Metrics
H-Index
i10 Index
Citation Counts
28
55
2,022
Rankings
Ranking Based On Selection: 4
Hamidreza Aghaei
Metrics
H-Index
i10 Index
Citation Counts
25
39
1,726
Rankings
Ranking Based On Selection: 5
Razieh Fazaeli
Metrics
H-Index
i10 Index
Citation Counts
22
39
1,382
Rankings
Ranking Based On Selection: 6
Amirabbas Nourbakhsh
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,348
Refractories
Electroceramics
Nanomaterials
Porous Materials
Geopolymers
Rankings
Ranking Based On Selection: 7
Nasrin Talebian
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,887
Nanostructured catalyst for antibacterial
Photodegradation
Bioactivity and Fuel Cell Applications
Rankings
Ranking Based On Selection: 8
M Reza Talebinejad
Metrics
H-Index
i10 Index
Citation Counts
18
33
1,280
Rankings
Ranking Based On Selection: 9
Frazad Ahmadian
Metrics
H-Index
i10 Index
Citation Counts
17
26
864
Rankings
Ranking Based On Selection: 10
Mohsen Shahrokhi
Metrics
H-Index
i10 Index
Citation Counts
16
26
767
Rankings
Ranking Based On Selection: 11
Majid Kolahdoozan
Metrics
H-Index
i10 Index
Citation Counts
16
24
740
Rankings
Ranking Based On Selection: 12
Sanaz Naghibi
Metrics
H-Index
i10 Index
Citation Counts
15
21
682
Bio Materials
Ceramic Thin Films & coating
TiO2
Optical Properties of Ceramics
Mechanochemical Process
Rankings
Ranking Based On Selection: 13
Mohammad Ali Heidari-Shahreza
Metrics
H-Index
i10 Index
Citation Counts
15
20
500
Applied Linguistics
(Language) Education
Humor
Play
Comedy
Rankings
Ranking Based On Selection: 14
Saeed Taki
Metrics
H-Index
i10 Index
Citation Counts
13
16
741
language teaching methods
discourse analysis
language and culture
ELT and technology
Rankings
Ranking Based On Selection: 15
Mohammad Hassan Vakili
Metrics
H-Index
i10 Index
Citation Counts
11
15
521
Rankings
Ranking Based On Selection: 16
Aazam Aarabi
Metrics
H-Index
i10 Index
Citation Counts
9
9
367
food chemistry
food packaging
food technology
functional food
Rankings
Ranking Based On Selection: 17
Seyed Mehdi Mirhadi
Metrics
H-Index
i10 Index
Citation Counts
9
8
255
Rankings
Ranking Based On Selection: 18
Bahram Bahri
Metrics
H-Index
i10 Index
Citation Counts
9
9
581
Clean Transportation
Heavy-Duty Vehicles
Internal Combustion Engines
Alternative fuels
Light-Duty Vehicles
Rankings
Ranking Based On Selection: 19
Seyed Nezamoddin Mirsattari
Metrics
H-Index
i10 Index
Citation Counts
9
9
392
magnetic nanoparticles and targeted drug delivery
Computational Chemistry
synthesis of transition metal complexes
catalyst
Rankings
Ranking Based On Selection: 20
Mohsen Shahrokhi
Metrics
H-Index
i10 Index
Citation Counts
9
9
262
Sociolinguistics
Pragmatics
TEFL
TESL
Translation
Rankings
Ranking Based On Selection: 21
Maryam Tayebani
Metrics
H-Index
i10 Index
Citation Counts
9
9
257
Organometallics
Inorganic Chemictry
Medicinal Chemistry
Bioinorganic Chemistry
Rankings
Ranking Based On Selection: 22
Mehrosadat Mirmohammadi
Metrics
H-Index
i10 Index
Citation Counts
8
7
209
Rankings
Ranking Based On Selection: 23
Ali Reza Zanganeh
Metrics
H-Index
i10 Index
Citation Counts
8
6
313
conducting polymers
electrochemistry
spectroscopy
Rankings
Ranking Based On Selection: 24
Mahmood Shamirzaie
Metrics
H-Index
i10 Index
Citation Counts
7
4
255
Rankings
Ranking Based On Selection: 25
Hossein Izadi-Vasafi
Metrics
H-Index
i10 Index
Citation Counts
7
4
213
Rankings
Ranking Based On Selection: 26
Shakiba Naeimi
Metrics
H-Index
i10 Index
Citation Counts
6
6
419
Rankings
Ranking Based On Selection: 27
Nafiseh Pourshirband
Metrics
H-Index
i10 Index
Citation Counts
6
6
313
Analytical Chemistry
Zeolite Modified Electrodes
Photodegradation and Environmental
Rankings
Ranking Based On Selection: 28
Raana Sheikhsamany
Metrics
H-Index
i10 Index
Citation Counts
6
4
94
Catalyst
Photodegradation
Enviremental Research
Nanocamposites
Metal Organic Framework
Rankings
Ranking Based On Selection: 29
Elham Jazan
Metrics
H-Index
i10 Index
Citation Counts
6
6
164
Physical Chemistry
Ion Mobility Spectrometry
Rankings
Ranking Based On Selection: 30
Parastoo Ghahremani
Metrics
H-Index
i10 Index
Citation Counts
5
4
173
Rankings
Ranking Based On Selection: 31
Fariba Soltanolkottabi
Metrics
H-Index
i10 Index
Citation Counts
4
1
48
Rankings
Ranking Based On Selection: 32
Behnam Hosseini
Metrics
H-Index
i10 Index
Citation Counts
4
3
50
Rankings
Ranking Based On Selection: 33
Shima Ghobadi
Metrics
H-Index
i10 Index
Citation Counts
3
2
92
Rankings
Ranking Based On Selection: 34
Shohreh Vahed
Metrics
H-Index
i10 Index
Citation Counts
3
2
57
Rankings
Ranking Based On Selection: 35
Gholamreza Dabbagh
Metrics
H-Index
i10 Index
Citation Counts
3
1
26