Iran's Top 2% Scientists 2023

Iran has 2,141 scientists on the 2023 single-year Top 2% list, up 10.2% from 1,943 in 2022. That places Iran 16th in the world by number of listed scientists. University of Tehran has the most listed scientists (106), followed by Daneshgahe Elm va Sanat e Iran (63).

Single Year

2,141

+198 (+10.2%) vs 2022

Career Data

871

+129 (+17.4%) vs 2022

World rank by count

#16

No change vs 2022

Institutes

447

+31 (+7.5%) vs 2022

Scientists in Iran on the list, by year

The single-year count has grown 86% since 2020.

Single-year list, change on the previous year

2021+47.4%

2022+14.2%

2023+10.2%

2024+8.6%

2025+9.0%

Show the numbers

Year	Single Year	Change	Career Data	Change
2020	1,154		433
2021	1,701	+47.4%	654	+51.0%
2022	1,943	+14.2%	742	+13.5%
2023	2,141	+10.2%	871	+17.4%
2024	2,325	+8.6%	1,020	+17.1%
2025	2,534	+9.0%	1,201	+17.7%

Top 10 institutes in Iran

By number of listed scientists

Single-year list2023

Show the list

All 2,141 scientists

Single-year list2023

The first 100 are free to browse.

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Rank in Iran	World rank	Scientist	Institute	Sub-field	Rank in sub-field
1	173	Sheikholeslami, Mohsen	Babol Noshirvani University of Technology	Mechanical Engineering & Transports	Rank 1
2	291	SA Sahebkar, Amirhossein	Mashhad University of Medical Sciences	Medicinal & Biomolecular Chemistry	Rank 1
3	599	Jafari, Seid Mahdi	Gorgan University of Agricultural Sciences and Natural Resources	Food Science	Rank 5
4	616	Mahmoodi, Niyaz Mohammad	Institute for Color Science and Technology	Chemical Engineering	Rank 6
5	714	SM Salavati-Niasari, Masoud	University of Kashan	Materials	Rank 11
6	1,587	AO Akhavan, Omid	Sharif University of Technology	Applied Physics	Rank 46
7	1,639	GB Ghanbari, Behzad	Kermanshah University of Technology	Applied Mathematics	Rank 8
8	1,739	IS Iravani, Siavash	Isfahan University of Medical Sciences	Nanoscience & Nanotechnology	Rank 61
9	1,747	MA Maleki, Ali	Daneshgahe Elm va Sanat e Iran	Organic Chemistry	Rank 23
10	2,004	KA Kaveh, Ali	Daneshgahe Elm va Sanat e Iran	Civil Engineering	Rank 4
11	2,070	NM Nasrollahzadeh, Mahmoud	University of Qom	Organic Chemistry	Rank 26
12	2,073	AM Afrand, Masoud	Islamic Azad University, Najafabad Branch	Mechanical Engineering & Transports	Rank 23
13	2,185	RJ Rezaee Jordehi, Ahmad	Islamic Azad University, Rasht Branch	Energy	Rank 54
14	2,598	DM Dehghan, Mehdi	Amirkabir University of Technology	Numerical & Computational Mathematics	Rank 3
15	2,634	Pourghasemi, Hamid Reza	Shiraz University	Geochemistry & Geophysics	Rank 36
16	2,806	AA Askarzadeh, Alireza	Graduate University of Advanced Technology	Energy	Rank 65
17	3,070	TD Toghraie, D.	Islamic Azad University	Mechanical Engineering & Transports	Rank 29
18	3,355	KA Khataee, Alireza	University of Tabriz	Chemical Engineering	Rank 15
19	3,407	GD Ganji, Davood Domiri	Babol Noshirvani University of Technology	Mechanical Engineering & Transports	Rank 33
20	3,539	KY Kiani, Y.	Shahrekord University	Mechanical Engineering & Transports	Rank 36
21	3,557	GN Ghadimi, Noradin	Islamic Azad University, Ardabil Branch	Networking & Telecommunications	Rank 31
22	3,692	AF Azizi, Fereidoun	Shahid Beheshti University of Medical Sciences, Research Institute for Endocrine Science	Endocrinology & Metabolism	Rank 70
23	3,963	RN Rezaei, Nima	Research Center for Immunodeficiencies	Immunology	Rank 102
24	4,039	MH Mirzaei, Hamed	Kashan University of Medical Sciences	Biochemistry & Molecular Biology	Rank 88
25	4,121	HE Hemmat Esfe, Mohammad	Imam Hossein University	Mechanical Engineering & Transports	Rank 40
26	4,334	HH Hosseinzadeh, Hossein	School of Pharmacy	Medicinal & Biomolecular Chemistry	Rank 14
27	4,937	MK Mortezaee, Keywan	Kurdistan University of Medical Sciences	Biochemistry & Molecular Biology	Rank 107
28	4,948	BE Babaei, Ebrahim	University of Tabriz	Electrical & Electronic Engineering	Rank 16
29	5,069	KR Kelishadi, Roya	Child Growth and Development Research Center, Isfahan UMS	General & Internal Medicine	Rank 104
30	5,720	SZ Shariatinia, Zahra	Amirkabir University of Technology	Inorganic & Nuclear Chemistry	Rank 17
31	6,173	EF Ebrahimi, Farzad	Imam Khomeini International University	Mechanical Engineering & Transports	Rank 58
32	6,315	AP Ahmadi, Pouria	University of Tehran	Energy	Rank 134
33	6,432	AA Asadi-Pooya, Ali A.	Shiraz University of Medical Sciences	Neurology & Neurosurgery	Rank 384
34	6,587	TA Taleizadeh, Ata Allah	University of Tehran	Operations Research	Rank 25
35	6,671	BM Bahiraei, Mehdi	Razi University	Chemical Engineering	Rank 35
36	6,857	MA Maleki, Akbar	Shahrood University of Technology	Energy	Rank 140
37	6,971	KA Karimipour, Arash	Islamic Azad University, Najafabad Branch	Mechanical Engineering & Transports	Rank 65
38	7,491	EH Etesami, Hassan	University of Tehran	Agronomy & Agriculture	Rank 48
39	7,529	KR Kalbasi, Rasool	Islamic Azad University, Najafabad Branch	Physical Chemistry	Rank 27
40	7,990	GM Ghaedi, Mehrorang	Yasouj University	Organic Chemistry	Rank 101
41	8,088	HA Heidari, Ali Asghar	University of Tehran	Artificial Intelligence & Image Processing	Rank 320
42	8,361	NT Niknam, Taher	Shiraz University of Technology	Energy	Rank 177
43	8,476	NG Najafi, Gh	Tarbiat Modares University	Energy	Rank 179
44	8,676	Abdollahi, Mohammad	Tehran University of Medical Sciences	Pharmacology & Pharmacy	Rank 47
45	8,754	RB Ramezanzadeh, Bahram	Institute for Color Science and Technology	Polymers	Rank 54
46	8,858	AM Arefi, Mohammad	University of Kashan	Mechanical Engineering & Transports	Rank 84
47	8,892	EA Ensafi, Ali A.	Isfahan University of Technology	Analytical Chemistry	Rank 35
48	9,057	NV Nourani, Vahid	University of Tabriz	Environmental Engineering	Rank 44
49	9,111	HK Hajian-Tilaki, Karimollah	Babol University of Medical Sciences	General & Internal Medicine	Rank 175
50	9,256	SA Shahsavar, Amin	Kermanshah University of Technology	Energy	Rank 194
51	9,424	MA Montazeri, Ali	Iranian Academic Center for Education, Culture and Research	General & Internal Medicine	Rank 178
52	9,439	RH Rezazadeh, Hadi	Amol University of Special Modern Technologies	General Physics	Rank 61
53	9,586	ZY Zare, Yasser	Iranian Academic Center for Education, Culture and Research	Polymers	Rank 59
54	9,689	HM Hatami, M.	Ferdowsi University of Mashhad	Mechanical Engineering & Transports	Rank 90
55	9,735	MA Mahvi, Amir Hossein	Tehran University of Medical Sciences	Environmental Sciences	Rank 145
56	10,076	VH Veisi, Hojat	Payame Noor University	Organic Chemistry	Rank 146
57	10,090	BM Baghayeri, Mehdi	Hakim Sabzevari University	Analytical Chemistry	Rank 44
58	10,381	MH Mirzadeh, Hamed	University of Tehran	Materials	Rank 164
59	10,673	MR Malekzadeh, Reza	Digestive Oncology Research Center	General & Internal Medicine	Rank 194
60	10,700	SS shahrokhian, Saeed	Sharif University of Technology	Analytical Chemistry	Rank 46
61	10,896	SA Simchi, Abdolreza	Sharif University of Technology	Materials	Rank 174
62	11,124	MO Moradi, Omid	Islamic Azad University, Shahr-e Qods Branch	Nanoscience & Nanotechnology	Rank 333
63	11,293	NH Namazi, Hassan	University of Tabriz	Polymers	Rank 72
64	11,325	BM Barati, Mohammad Reza	Amirkabir University of Technology	Mechanical Engineering & Transports	Rank 105
65	11,395	MM Miransari, Mohammad	AbtinBerkeh Scientific Ltd. Company	Agronomy & Agriculture	Rank 66
66	11,442	KB Keshtegar, Behrooz	University of Zabol	Mechanical Engineering & Transports	Rank 107
67	11,456	SB Salehi, Bahare	Shahid Beheshti University of Medical Sciences	Biochemistry & Molecular Biology	Rank 237
68	11,498	FF Farzadfar, Farshad	Non-Communicable Diseases Research Center	General & Internal Medicine	Rank 204
69	11,528	AS Abbasbandy, Saeid	Imam Khomeini International University	Numerical & Computational Mathematics	Rank 17
70	11,568	MB Mohammadi-Ivatloo, Behnam	University of Tabriz	Energy	Rank 252
71	11,715	RM Rezakazemi, Mashallah	Shahrood University of Technology	Chemical Engineering	Rank 60
72	11,908	SH Safarpour, Hamed	Imam Khomeini International University	Design Practice & Management	Rank 7
73	11,935	AA Ashori, Alireza	Iranian Research Organization for Science and Technology	Polymers	Rank 80
74	12,096	KM Keshavarz-Ghorabaee, Mehdi	Gonbad Kavous University	Economics	Rank 198
75	12,258	AS Azizian, Saeid	Bu-Ali Sina University	Chemical Physics	Rank 206
76	12,274	MM Mehrpooya, Mehdi	University of Tehran	Energy	Rank 267
77	12,308	SF Salehi, Fakhreddin	Bu-Ali Sina University	Food Science	Rank 84
78	12,810	HA Habibi-Yangjeh, Aziz	University of Mohaghegh Ardabili	Chemical Physics	Rank 214
79	12,984	NS Nabavi, Seyed Mohammad Bagher	Islamic Azad University, Ahvaz branch	Medicinal & Biomolecular Chemistry	Rank 36
80	13,019	RM Rahimpour, Mohammad Reza	Shiraz University	Chemical Engineering	Rank 69
81	13,227	SN Shafiei, Navvab	Hoonam Sanat Farnak Engineering and Technology knowledge-based Company	Mechanical Engineering & Transports	Rank 126
82	13,385	AZ Asemi, Zatollah	Kashan University of Medical Sciences	Nutrition & Dietetics	Rank 96
83	13,749	BH Beitollahi, Hadi	Graduate University of Advanced Technology	Analytical Chemistry	Rank 54
84	13,903	Faghidian, S. Ali	Islamic Azad University, Science and Research Branch	Mechanical Engineering & Transports	Rank 133
85	13,926	AM Ahmadi, Mohammad H.	Shahrood University of Technology	Energy	Rank 307
86	14,028	HR Hemmati, Reza	Kermanshah University of Technology	Energy	Rank 309
87	14,344	GF Gharehchopogh, Farhad Soleimanian	Islamic Azad University, Urmia Branch	Artificial Intelligence & Image Processing	Rank 535
88	14,398	NA Nazari, Ali	Islamic Azad University, Saveh Branch	Materials	Rank 247
89	14,646	MM Mirzazadeh, M.	University of Guilan	Optics	Rank 57
90	14,688	SS Safiri, Saeid	Faculty of Medicine	General & Internal Medicine	Rank 234
91	15,163	HA Hafezalkotob, Ashkan	Islamic Azad University, South Tehran Branch	Operations Research	Rank 69
92	15,181	IM Izadi, Mohsen	Lorestan University	Mechanical Engineering & Transports	Rank 147
93	15,307	JM Jalali, Mohsen	Bu-Ali Sina University	Agronomy & Agriculture	Rank 88
94	15,408	ZS Zinatloo-Ajabshir, Sahar	University of Bonab	Materials	Rank 261
95	15,455	AM Aliha, M. R.M.	Daneshgahe Elm va Sanat e Iran	Mechanical Engineering & Transports	Rank 153
96	15,847	NA Nezamzadeh-Ejhieh, Alireza	Islamic Azad University, Shahreza Branch	Chemical Physics	Rank 253
97	15,871	EM Eslami, Mostafa	University of Mazandaran	Optics	Rank 64
98	16,279	MA Mostafaeipour, Ali	Yazd University	Energy	Rank 354
99	16,319	OA Oryan, Ahmad	Shiraz University	Veterinary Sciences	Rank 8
100	16,422	MS Mallakpour, Shadpour	Isfahan University of Technology	Polymers	Rank 124
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Countries with a similar count

Single-year list2023

Switzerland3,311 scientistsin 2023

South Korea3,240 scientistsin 2023

Sweden2,548 scientistsin 2023

Denmark1,958 scientistsin 2023

Belgium1,935 scientistsin 2023

Israel1,617 scientistsin 2023

Explore other countries

Single-year list2023

India4,635 scientistsin 2023

Pakistan709 scientistsin 2023

Bangladesh177 scientistsin 2023

Sri Lanka42 scientistsin 2023

Nepal22 scientistsin 2023

China23,487 scientistsin 2023

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Frequently asked questions

How many scientists from Iran are in the 2023 Stanford Top 2% list?

2,141 scientists affiliated with Iran are on the 2023 single-year list, and 871 are on the career-long list.

Which institute in Iran has the most Top 2% scientists?

On the 2023 single-year list, University of Tehran has the most listed scientists from Iran, with 106. It is followed by Daneshgahe Elm va Sanat e Iran with 63.

How has the number of Top 2% scientists in Iran changed since 2020?

On the single-year list, Iran went from 1,154 scientists in 2020 to 2,141 in 2023, a change of +85.5%.

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.