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" (873,690 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
Reşat Apak
analytical chemistry
food chemistry
environmental chemistry
biochemistry
Metrics
H-Index
i10 Index
Citation
71
264
24,622
* Rankings
Ranking Based On Selection: 10
Ömer Uysal
biostatistics istanbul university cerrahpaşa bezmialem vakif university
Metrics
H-Index
i10 Index
Citation
48
143
8,295

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Rankings
Ranking Based On Selection: 11
Mustafa Demir
Radiation
Nuclear Medicine
Radiation protection
Metrics
H-Index
i10 Index
Citation
46
194
8,198
* Rankings
Ranking Based On Selection: 14
Levent Kabasakal
medicine
nuclear medicine
oncology
radionuclide treatment
Metrics
H-Index
i10 Index
Citation
42
99
5,514
* Rankings
Ranking Based On Selection: 18
Necmettin Tanrıöver
neurosurgery
skull base surgery
microsurgical anatomy
Metrics
H-Index
i10 Index
Citation
37
96
4,865
* Rankings
Ranking Based On Selection: 20
Nurten Çolak Kaya
hemşirelik
ebelik
etik
hemşirelik model ve kuramları
hemşirelik süreci
Metrics
H-Index
i10 Index
Citation
35
70
3,836
* Rankings
Ranking Based On Selection: 23
Akif Turna
Göğüs Cerrahisi
İmmünoloji
Minimal İnvazif Cerrahi
Metrics
H-Index
i10 Index
Citation
34
72
4,900
* Rankings
Ranking Based On Selection: 28
İrfan Erdoğan
Eğitim Liderliği
Okul Yönetimi
Eğitim Politikası
Karşılaştırmalı Eğitim
Yükseköğretim
Metrics
H-Index
i10 Index
Citation
33
53
5,834
* Rankings
Ranking Based On Selection: 29
Emin Özbek
Urooncology
Endourology
Andrology
Molecular Urology
Metrics
H-Index
i10 Index
Citation
32
97
4,494
* Rankings
Ranking Based On Selection: 34
İlker İnanç Balkan
sağlık hizmeti ilişkili enfeksiyonlar
immünoloji
antimikrobiyal direnç
Metrics
H-Index
i10 Index
Citation
31
64
3,753
* Rankings
Ranking Based On Selection: 40
Erdinç Öztürk
Psikoloji
Disosiyatif Bozukluk
Adli Psikoloji
Metrics
H-Index
i10 Index
Citation
29
77
3,523
* Rankings
Ranking Based On Selection: 42
Fırat Kaçar
Analog circuits and signal processing
Active filters
Current-mode circuits
Memristor
Metrics
H-Index
i10 Index
Citation
28
74
3,384
* Rankings
Ranking Based On Selection: 45
Ahmet Şimşek
tarih eğitimi
tarihyazımı
eğitim tarihi
sosyal bilgiler
tarihçilik
Metrics
H-Index
i10 Index
Citation
28
74
2,532
* Rankings
Ranking Based On Selection: 46
Yavuz Uyar
Medical Microbiology and Clin Microb
Virology
Zoonotic Diseases
Biosafety
Quality in Laboratory
Metrics
H-Index
i10 Index
Citation
28
48
2,508
* Rankings
Ranking Based On Selection: 51
Melek Nihal Esin
İş sağlığı
iş sağlığı hemşireliği
sağlığı geliştirme
Metrics
H-Index
i10 Index
Citation
27
52
2,995
* Rankings
Ranking Based On Selection: 52
Sait Gönen
Thyroid disease
Diabetes Mellitus
Pituitary disease
metabolic bone disease
Metrics
H-Index
i10 Index
Citation
27
42
2,096
* Rankings
Ranking Based On Selection: 58
Şule Önsel Ekici
Bayesian networks
decision making
artificial neural networks
cognitive maps
competitiveness
Metrics
H-Index
i10 Index
Citation
26
34
2,361
* Rankings
Ranking Based On Selection: 59
Hüseyin Yılmaz
viroloji
immünoloji
infeksiyöz hastalıklar
zoonozlar
moleküler biyoloji
Metrics
H-Index
i10 Index
Citation
26
53
2,240
* Rankings
Ranking Based On Selection: 64
Murat Hökelek
Parasitology
Microbiology
Echinococcosis
Toxoplasmosis
Leishmaniasis
Metrics
H-Index
i10 Index
Citation
26
43
1,922
* Rankings
Ranking Based On Selection: 65
Turhan Bilir
Cement
Concrete
Sustainability
crack prediction and estimation
Metrics
H-Index
i10 Index
Citation
25
32
2,866
* Rankings
Ranking Based On Selection: 72
İdris Bostan
Osmanlı Tarihi
Denizcilik Tarihi
Siyasi Tarih
Diplomasi Tarihi
Metrics
H-Index
i10 Index
Citation
24
64
2,294
* Rankings
Ranking Based On Selection: 77
Zaid Alrawadieh
Tourist behavior
entrepreneurship in tourism and hospitality
Metrics
H-Index
i10 Index
Citation
23
30
2,117
* Rankings
Ranking Based On Selection: 78
Orhan Koçak
sosyal politika-social policy
sosyal hizmet-social work
göç-Immigration
Yaşlanma-Aging
Refah
Metrics
H-Index
i10 Index
Citation
23
49
1,955
* Rankings
Ranking Based On Selection: 87
Şahika Sena Bayazit
Adsorption
magnetic nanoparticles
environmental chemistry
chemical engineering
Metrics
H-Index
i10 Index
Citation
22
31
1,657
* Rankings
Ranking Based On Selection: 88
Burçin Acar Şeşen
Kimya egitimi
Fen Eğitimi
Chemistry Education
Science Education
Metrics
H-Index
i10 Index
Citation
22
28
2,105
* Rankings
Ranking Based On Selection: 89
Barış İkitimur
cardiology
electrocardiography
echocardiography
invasive cardiology
device therapy
Metrics
H-Index
i10 Index
Citation
22
33
1,205
* Rankings
Ranking Based On Selection: 93
Fatma Ay
empati ağrı etik hemşirelik bakımı beceri eğitimi AIDS/HIV hemsirelikte yönetim
Metrics
H-Index
i10 Index
Citation
22
31
1,442
* Rankings
Ranking Based On Selection: 94
Neşe Saltoğlu
Diabetic foot
adult vaccination
hepatitis
antifungal therapy
HIV
Metrics
H-Index
i10 Index
Citation
22
53
2,433
* Rankings
Ranking Based On Selection: 98
Şah İsmail Kırbaşlar
Ayırma işlemleri
Termodinamik
Uçucu Yağlar
Antioksidanlar
Metrics
H-Index
i10 Index
Citation
22
33
1,062
* Rankings
Ranking Based On Selection: 100
Mehmet Yıldırım
insan anatomisi
variasyonlar anatomisi
tıp eğitimi
medikal çizim
Metrics
H-Index
i10 Index
Citation
22
32
1,678
Rankings
Ranking Based On Selection: 1
Reşat Apak
Metrics
H-Index
i10 Index
Citation Counts
71
264
24,622
analytical chemistry
food chemistry
environmental chemistry
biochemistry
Rankings
Ranking Based On Selection: 2
Aksel Siva
Metrics
H-Index
i10 Index
Citation Counts
69
164
18,786
Rankings
Ranking Based On Selection: 3
Sebahattin Yurdakul
Metrics
H-Index
i10 Index
Citation Counts
66
135
18,501
Rankings
Ranking Based On Selection: 4
Özgür Kasapçopur
Metrics
H-Index
i10 Index
Citation Counts
59
235
17,692
Rankings
Ranking Based On Selection: 5
Vedat Hamuryudan
Metrics
H-Index
i10 Index
Citation Counts
57
134
13,677
Rankings
Ranking Based On Selection: 6
Gunay Can
Metrics
H-Index
i10 Index
Citation Counts
57
189
36,239
Rankings
Ranking Based On Selection: 7
Gülen Hatemi
Metrics
H-Index
i10 Index
Citation Counts
52
132
11,995
Rankings
Ranking Based On Selection: 8
Hafize Uzun
Metrics
H-Index
i10 Index
Citation Counts
52
206
10,343
Rankings
Ranking Based On Selection: 9
Fehmi Tabak
Metrics
H-Index
i10 Index
Citation Counts
51
171
10,279
Rankings
Ranking Based On Selection: 10
Ömer Uysal
Metrics
H-Index
i10 Index
Citation Counts
48
143
8,295
biostatistics istanbul university cerrahpaşa bezmialem vakif university

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 11
Mustafa Demir
Metrics
H-Index
i10 Index
Citation Counts
46
194
8,198
Radiation
Nuclear Medicine
Radiation protection
Rankings
Ranking Based On Selection: 12
Çiğdem Özkara
Metrics
H-Index
i10 Index
Citation Counts
44
97
10,401
Rankings
Ranking Based On Selection: 13
Ayşe Huri Özdoğan
Metrics
H-Index
i10 Index
Citation Counts
42
68
8,257
Rankings
Ranking Based On Selection: 14
Levent Kabasakal
Metrics
H-Index
i10 Index
Citation Counts
42
99
5,514
medicine
nuclear medicine
oncology
radionuclide treatment
Rankings
Ranking Based On Selection: 15
Seval Aydın
Metrics
H-Index
i10 Index
Citation Counts
41
84
4,899
Rankings
Ranking Based On Selection: 16
Salim Çalışkan
Metrics
H-Index
i10 Index
Citation Counts
38
80
5,838
Rankings
Ranking Based On Selection: 17
Naci Koçer
Metrics
H-Index
i10 Index
Citation Counts
38
95
5,974
Rankings
Ranking Based On Selection: 18
Necmettin Tanrıöver
Metrics
H-Index
i10 Index
Citation Counts
37
96
4,865
neurosurgery
skull base surgery
microsurgical anatomy
Rankings
Ranking Based On Selection: 20
Nurten Çolak Kaya
Metrics
H-Index
i10 Index
Citation Counts
35
70
3,836
hemşirelik
ebelik
etik
hemşirelik model ve kuramları
hemşirelik süreci
Rankings
Ranking Based On Selection: 21
Muhammet Ali Aydın
Metrics
H-Index
i10 Index
Citation Counts
35
97
5,102
Rankings
Ranking Based On Selection: 22
Gebrail Bekdaş
Metrics
H-Index
i10 Index
Citation Counts
34
114
4,850
Rankings
Ranking Based On Selection: 23
Akif Turna
Metrics
H-Index
i10 Index
Citation Counts
34
72
4,900
Göğüs Cerrahisi
İmmünoloji
Minimal İnvazif Cerrahi
Rankings
Ranking Based On Selection: 24
Hayati Filik
Metrics
H-Index
i10 Index
Citation Counts
34
77
3,117
Rankings
Ranking Based On Selection: 26
Ahmet Yıldız
Metrics
H-Index
i10 Index
Citation Counts
33
98
4,033
Rankings
Ranking Based On Selection: 27
Gülbeyaz Can
Metrics
H-Index
i10 Index
Citation Counts
33
68
3,471
Rankings
Ranking Based On Selection: 28
İrfan Erdoğan
Metrics
H-Index
i10 Index
Citation Counts
33
53
5,834
Eğitim Liderliği
Okul Yönetimi
Eğitim Politikası
Karşılaştırmalı Eğitim
Yükseköğretim
Rankings
Ranking Based On Selection: 29
Emin Özbek
Metrics
H-Index
i10 Index
Citation Counts
32
97
4,494
Urooncology
Endourology
Andrology
Molecular Urology
Rankings
Ranking Based On Selection: 30
Hatice Kaya
Metrics
H-Index
i10 Index
Citation Counts
32
90
3,514
Rankings
Ranking Based On Selection: 31
Oya Ercan
Metrics
H-Index
i10 Index
Citation Counts
32
66
5,052
Rankings
Ranking Based On Selection: 32
Cemal Tamer Erel
Metrics
H-Index
i10 Index
Citation Counts
32
55
3,334
Rankings
Ranking Based On Selection: 33
Sinan Melih Niğdeli
Metrics
H-Index
i10 Index
Citation Counts
31
82
3,825
Structural control
Optimization
Structural dynamics
Rankings
Ranking Based On Selection: 34
İlker İnanç Balkan
Metrics
H-Index
i10 Index
Citation Counts
31
64
3,753
sağlık hizmeti ilişkili enfeksiyonlar
immünoloji
antimikrobiyal direnç
Rankings
Ranking Based On Selection: 35
Derya Uludüz
Metrics
H-Index
i10 Index
Citation Counts
31
70
3,871
Rankings
Ranking Based On Selection: 36
Ahmet Dirican
Metrics
H-Index
i10 Index
Citation Counts
31
61
2,706
Rankings
Ranking Based On Selection: 37
Nurhan Seyahi
Metrics
H-Index
i10 Index
Citation Counts
30
65
4,865
Rankings
Ranking Based On Selection: 38
Bahadır Bardakcı
Metrics
H-Index
i10 Index
Citation Counts
30
88
3,540
Rankings
Ranking Based On Selection: 39
Ayşim Büge Öz
Metrics
H-Index
i10 Index
Citation Counts
30
87
5,127
Rankings
Ranking Based On Selection: 40
Erdinç Öztürk
Metrics
H-Index
i10 Index
Citation Counts
29
77
3,523
Psikoloji
Disosiyatif Bozukluk
Adli Psikoloji
Rankings
Ranking Based On Selection: 41
Abdülkerim Özaydın
Metrics
H-Index
i10 Index
Citation Counts
29
96
3,217
Ortaçağ Tarihi
İslam Tarihi
Selçuklu Tarihi
Rankings
Ranking Based On Selection: 42
Fırat Kaçar
Metrics
H-Index
i10 Index
Citation Counts
28
74
3,384
Analog circuits and signal processing
Active filters
Current-mode circuits
Memristor
Rankings
Ranking Based On Selection: 43
İbrahim Adaletli
Metrics
H-Index
i10 Index
Citation Counts
28
77
3,132
Rankings
Ranking Based On Selection: 44
Pınar Kadıoğlu
Metrics
H-Index
i10 Index
Citation Counts
28
73
2,800
Rankings
Ranking Based On Selection: 45
Ahmet Şimşek
Metrics
H-Index
i10 Index
Citation Counts
28
74
2,532
tarih eğitimi
tarihyazımı
eğitim tarihi
sosyal bilgiler
tarihçilik
Rankings
Ranking Based On Selection: 46
Yavuz Uyar
Metrics
H-Index
i10 Index
Citation Counts
28
48
2,508
Medical Microbiology and Clin Microb
Virology
Zoonotic Diseases
Biosafety
Quality in Laboratory
Rankings
Ranking Based On Selection: 49
Derya Çelik
Metrics
H-Index
i10 Index
Citation Counts
27
49
2,235
Rankings
Ranking Based On Selection: 50
Saadet Olcay Evliyaoğlu
Metrics
H-Index
i10 Index
Citation Counts
27
60
3,006
Rankings
Ranking Based On Selection: 51
Melek Nihal Esin
Metrics
H-Index
i10 Index
Citation Counts
27
52
2,995
İş sağlığı
iş sağlığı hemşireliği
sağlığı geliştirme
Rankings
Ranking Based On Selection: 52
Sait Gönen
Metrics
H-Index
i10 Index
Citation Counts
27
42
2,096
Thyroid disease
Diabetes Mellitus
Pituitary disease
metabolic bone disease
Rankings
Ranking Based On Selection: 54
Kenan Midilli
Metrics
H-Index
i10 Index
Citation Counts
27
55
2,485
Rankings
Ranking Based On Selection: 55
Mustafa Şükrü Şenocak
Metrics
H-Index
i10 Index
Citation Counts
27
46
4,170
Klinik araştırma değerlendirmesi
epidemiyoloji
Rankings
Ranking Based On Selection: 56
Gülten Atun
Metrics
H-Index
i10 Index
Citation Counts
27
48
1,945
Rankings
Ranking Based On Selection: 57
Ülkü Baykal
Metrics
H-Index
i10 Index
Citation Counts
26
72
2,726
Rankings
Ranking Based On Selection: 58
Şule Önsel Ekici
Metrics
H-Index
i10 Index
Citation Counts
26
34
2,361
Bayesian networks
decision making
artificial neural networks
cognitive maps
competitiveness
Rankings
Ranking Based On Selection: 59
Hüseyin Yılmaz
Metrics
H-Index
i10 Index
Citation Counts
26
53
2,240
viroloji
immünoloji
infeksiyöz hastalıklar
zoonozlar
moleküler biyoloji
Rankings
Ranking Based On Selection: 60
Ergül Aslan
Metrics
H-Index
i10 Index
Citation Counts
26
45
2,156
Rankings
Ranking Based On Selection: 61
Bahri Ülküseven
Metrics
H-Index
i10 Index
Citation Counts
26
63
2,091
Rankings
Ranking Based On Selection: 63
Tevfik Tugan Beşe
Metrics
H-Index
i10 Index
Citation Counts
26
47
2,718
Rankings
Ranking Based On Selection: 64
Murat Hökelek
Metrics
H-Index
i10 Index
Citation Counts
26
43
1,922
Parasitology
Microbiology
Echinococcosis
Toxoplasmosis
Leishmaniasis
Rankings
Ranking Based On Selection: 65
Turhan Bilir
Metrics
H-Index
i10 Index
Citation Counts
25
32
2,866
Cement
Concrete
Sustainability
crack prediction and estimation
Rankings
Ranking Based On Selection: 66
Ayşem Üzer Arda
Metrics
H-Index
i10 Index
Citation Counts
25
46
1,700
Rankings
Ranking Based On Selection: 67
Ümran Yeşiltepe Oskay
Metrics
H-Index
i10 Index
Citation Counts
25
62
2,328
Rankings
Ranking Based On Selection: 68
Alper Yılmaz
Metrics
H-Index
i10 Index
Citation Counts
25
52
2,164
Rankings
Ranking Based On Selection: 71
Muhammet Baştuğ
Metrics
H-Index
i10 Index
Citation Counts
24
49
2,054
Rankings
Ranking Based On Selection: 72
İdris Bostan
Metrics
H-Index
i10 Index
Citation Counts
24
64
2,294
Osmanlı Tarihi
Denizcilik Tarihi
Siyasi Tarih
Diplomasi Tarihi
Rankings
Ranking Based On Selection: 73
Şennur İlvan
Metrics
H-Index
i10 Index
Citation Counts
24
46
2,099
Rankings
Ranking Based On Selection: 74
İsmail İnci
Metrics
H-Index
i10 Index
Citation Counts
24
38
1,413
Rankings
Ranking Based On Selection: 75
Gülten Gürdağ
Metrics
H-Index
i10 Index
Citation Counts
24
29
1,605
Rankings
Ranking Based On Selection: 76
Mehmet Akif Özdamar
Metrics
H-Index
i10 Index
Citation Counts
24
34
1,749
Rankings
Ranking Based On Selection: 77
Zaid Alrawadieh
Metrics
H-Index
i10 Index
Citation Counts
23
30
2,117
Tourist behavior
entrepreneurship in tourism and hospitality
Rankings
Ranking Based On Selection: 78
Orhan Koçak
Metrics
H-Index
i10 Index
Citation Counts
23
49
1,955
sosyal politika-social policy
sosyal hizmet-social work
göç-Immigration
Yaşlanma-Aging
Refah
Rankings
Ranking Based On Selection: 79
Hüseyin Beşiroğlu
Metrics
H-Index
i10 Index
Citation Counts
23
40
1,180
Rankings
Ranking Based On Selection: 80
Senem Karabulut
Metrics
H-Index
i10 Index
Citation Counts
23
49
1,597
Rankings
Ranking Based On Selection: 82
Zerrin Yiğit
Metrics
H-Index
i10 Index
Citation Counts
23
49
2,152
Rankings
Ranking Based On Selection: 83
Aydın Gürel
Metrics
H-Index
i10 Index
Citation Counts
23
45
1,958
Rankings
Ranking Based On Selection: 85
Mehmet Murat Hancı
Metrics
H-Index
i10 Index
Citation Counts
23
40
1,864
Rankings
Ranking Based On Selection: 86
Leyla Küçük
Metrics
H-Index
i10 Index
Citation Counts
22
35
1,482
Rankings
Ranking Based On Selection: 87
Şahika Sena Bayazit
Metrics
H-Index
i10 Index
Citation Counts
22
31
1,657
Adsorption
magnetic nanoparticles
environmental chemistry
chemical engineering
Rankings
Ranking Based On Selection: 88
Burçin Acar Şeşen
Metrics
H-Index
i10 Index
Citation Counts
22
28
2,105
Kimya egitimi
Fen Eğitimi
Chemistry Education
Science Education
Rankings
Ranking Based On Selection: 89
Barış İkitimur
Metrics
H-Index
i10 Index
Citation Counts
22
33
1,205
cardiology
electrocardiography
echocardiography
invasive cardiology
device therapy
Rankings
Ranking Based On Selection: 90
Umut Can Küçüksezer
Metrics
H-Index
i10 Index
Citation Counts
22
30
4,085
Rankings
Ranking Based On Selection: 91
Afife Mat
Metrics
H-Index
i10 Index
Citation Counts
22
37
1,469
Rankings
Ranking Based On Selection: 92
Atiye Tuğrul
Metrics
H-Index
i10 Index
Citation Counts
22
35
2,595
Rankings
Ranking Based On Selection: 93
Fatma Ay
Metrics
H-Index
i10 Index
Citation Counts
22
31
1,442
empati ağrı etik hemşirelik bakımı beceri eğitimi AIDS/HIV hemsirelikte yönetim
Rankings
Ranking Based On Selection: 94
Neşe Saltoğlu
Metrics
H-Index
i10 Index
Citation Counts
22
53
2,433
Diabetic foot
adult vaccination
hepatitis
antifungal therapy
HIV
Rankings
Ranking Based On Selection: 97
Mustafa Onur Ulu
Metrics
H-Index
i10 Index
Citation Counts
22
42
1,238
Rankings
Ranking Based On Selection: 98
Şah İsmail Kırbaşlar
Metrics
H-Index
i10 Index
Citation Counts
22
33
1,062
Ayırma işlemleri
Termodinamik
Uçucu Yağlar
Antioksidanlar
Rankings
Ranking Based On Selection: 99
Seher Naz Yeni
Metrics
H-Index
i10 Index
Citation Counts
22
37
1,656
Rankings
Ranking Based On Selection: 100
Mehmet Yıldırım
Metrics
H-Index
i10 Index
Citation Counts
22
32
1,678
insan anatomisi
variasyonlar anatomisi
tıp eğitimi
medikal çizim