Iran's Top 2% Scientists 2025

Iran has 2,534 scientists on the 2025 single-year Top 2% list, up 9.0% from 2,325 in 2024. That places Iran 16th in the world by number of listed scientists. University of Tehran has the most listed scientists (119), followed by Tehran University of Medical Sciences (96).

Single Year

2,534

+209 (+9.0%) vs 2024

Career Data

1,201

+181 (+17.7%) vs 2024

World rank by count

#16

No change vs 2024

Institutes

418

+136 (+48.2%) vs 2024

Scientists in Iran on the list, by year

The single-year count has more than doubled 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 list2025

Show the list

All 2,534 scientists

Single-year list2025

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	174	SA Sahebkar, Amirhossein	Mashhad University of Medical Sciences	Medicinal & Biomolecular Chemistry	Rank 1
2	268	Sheikholeslami, Mohsen	Babol Noshirvani University of Technology	Mechanical Engineering & Transports	Rank 1
3	363	KA Kaveh, Ali	Iran University of Science and Technology, College of Civil Engineering Tehran	Civil Engineering	Rank 1
4	415	Jafari, Seid Mahdi	Gorgan University of Agricultural Sciences and Natural Resources	Food Science	Rank 5
5	858	IS Iravani, Siavash	Boostan Ave	Nanoscience & Nanotechnology	Rank 31
6	1,287	SM Salavati-Niasari, Masoud	University of Kashan	Materials	Rank 26
7	1,673	SG Soleimanian Gharehchopogh, Farhad Soleimanian	Islamic Azad University, Urmia Branch	Artificial Intelligence & Image Processing	Rank 98
8	1,687	Mahmoodi, Niyaz Mohammad	Institute for Color Science and Technology	Chemical Engineering	Rank 6
9	1,864	RJ Rezaee Jordehi, Ahmad	Islamic Azad University, Rasht Branch	Energy	Rank 50
10	1,894	RN Rezaei, Nima Attaran	Tehran University of Medical Sciences	Immunology	Rank 43
11	2,288	Pourghasemi, Hamid Reza	Shiraz University	Geochemistry & Geophysics	Rank 21
12	2,322	AO Akhavan, Omid	Sharif University of Technology	Applied Physics	Rank 64
13	3,038	MA Maleki, Ali	Iran University of Science and Technology	Organic Chemistry	Rank 41
14	3,046	MK Mortezaee, Keywan	Kurdistan University of Medical Sciences	Biochemistry & Molecular Biology	Rank 54
15	3,086	GB Ghanbari, Behzad	Kermanshah University of Technology	General Physics	Rank 25
16	3,214	KA Khataee, A.	University of Tabriz	Chemical Engineering	Rank 14
17	3,234	DA Derakhshan, Ali	Golestan University	Languages & Linguistics	Rank 19
18	3,435	EH Etesami, Hassan	University of Tehran	Agronomy & Agriculture	Rank 23
19	3,517	AF Azizi, Fereidoun	Shahid Beheshti University of Medical Sciences, Research Institute for Endocrine Science	Endocrinology & Metabolism	Rank 51
20	3,767	KY Kiani, Yaser	Shahrekord University	Mechanical Engineering & Transports	Rank 34
21	4,030	SZ Shariatinia, Zahra	Amirkabir University of Technology	Inorganic & Nuclear Chemistry	Rank 8
22	4,073	AA Askarzadeh, Alireza	Graduate University of Advanced Technology	Energy	Rank 104
23	4,189	MH Mirzadeh, Hamed	University of Tehran	Materials	Rank 76
24	4,271	DM Dehghan, Mehdi	Amirkabir University of Technology	Numerical & Computational Mathematics	Rank 6
25	4,471	KR Kelishadi, Roya	Isfahan University of Medical Sciences	General & Internal Medicine	Rank 96
26	4,548	AA Asadi-Pooya, Ali Akbar	Shiraz University of Medical Sciences	Neurology & Neurosurgery	Rank 228
27	4,691	AM Arefi, Mohammad R.	University of Kashan	Mechanical Engineering & Transports	Rank 47
28	4,706	AM Aghbashlo, Mortaza	University of Tehran	Energy	Rank 126
29	4,749	NM Nasrollahzadeh, Mahmoud	University of Qom	Organic Chemistry	Rank 68
30	5,052	SF Salehi, Fakhreddin	Bu-Ali Sina University	Food Science	Rank 34
31	5,247	DG Domiri Ganji, Davood Domiri	Babol Noshirvani University of Technology	Mechanical Engineering & Transports	Rank 50
32	6,096	SS Safiri, Saeid	Neurosciences Research Center	General & Internal Medicine	Rank 117
33	6,156	FF Farzadfar, Farshad	Tehran University of Medical Sciences	General & Internal Medicine	Rank 121
34	6,285	RE Rasoulinezhad, Ehsan	University of Tehran	Economics	Rank 132
35	6,319	MH Mirzaei, Hamed Reza	Kashan University of Medical Sciences	Oncology & Carcinogenesis	Rank 172
36	6,505	TD Toghraie, Davood	Islamic Azad University	Mechanical Engineering & Transports	Rank 64
37	6,872	JA Jouyban, Abolghasem	Pharmaceutical Analysis Research Center	Chemical Engineering	Rank 29
38	7,186	GN Ghadimi, Noradin	Islamic Azad University, Ardabil Branch	Energy	Rank 180
39	7,398	HA Heidari, Ali Asghar	University of Tehran	Artificial Intelligence & Image Processing	Rank 377
40	7,458	MA Maleki, Akbar	Shahrood University of Technology	Energy	Rank 189
41	7,540	RH Rezazadeh, Hadi	Amol University of Special Modern Technologies	Optoelectronics & Photonics	Rank 10
42	7,566	MA Mohammad Aliha, Mohammad Reza	Iran University of Science and Technology	Mechanical Engineering & Transports	Rank 71
43	7,703	Abbasi, Amirali	Azarbaijan Shahid Madani University	Chemical Physics	Rank 133
44	8,012	HH Hosseinzadeh, Hossein	Mashhad University of Medical Sciences	Medicinal & Biomolecular Chemistry	Rank 25
45	8,103	MA Montazeri, Ali	Iranian Institute for Health Sciences Research	General & Internal Medicine	Rank 149
46	8,124	MM Mansournia, Mohammad Ali	Tehran University of Medical Sciences	General & Internal Medicine	Rank 150
47	8,153	GM Ghaedi, Mehrorang	Yasouj University	Analytical Chemistry	Rank 37
48	8,393	Abdollahi, Mohammad	School of Pharmacy	Pharmacology & Pharmacy	Rank 42
49	8,399	BE Babaei, Ebrahim	University of Tabriz	Electrical & Electronic Engineering	Rank 32
50	8,531	NA Nezamzadeh-Ejhieh, Alireza R.	Islamic Azad University, Shahreza Branch	Chemical Physics	Rank 144
51	8,773	RB Ramezanzadeh, Bahram	Institute for Color Science and Technology	Polymers	Rank 50
52	8,848	MM Mehrpooya, Mehdi	University of Tehran	Energy	Rank 229
53	9,047	FA Fattah-alhosseini, Arash	Bu-Ali Sina University	Materials	Rank 160
54	9,076	TA Taleizadeh, A. A.	University of Tehran	Operations Research	Rank 38
55	9,091	SA Shokri, Aref	Amirkabir University of Technology	Chemical Engineering	Rank 41
56	9,196	AS Abbasi, Sajjad	Shiraz University	Environmental Sciences	Rank 197
57	9,274	MS Mallakpour, Sh E.	Isfahan University of Technology	Polymers	Rank 56
58	9,384	GS Ghafouri-Fard, Soudeh	Shahid Beheshti University of Medical Sciences	Oncology & Carcinogenesis	Rank 265
59	9,440	Amiri, Sohrab	Baqiyatallah University of Medical Sciences	Psychiatry	Rank 213
60	9,547	NT Niknam, Taher	Shiraz University of Technology	Energy	Rank 253
61	9,560	ZS Zinatloo-Ajabshir, Sahar	University of Bonab	Materials	Rank 172
62	9,607	ZY Zare, Y.	Iranian Academic Center for Education, Culture and Research	Materials	Rank 174
63	9,652	AM Afrand, Masoud	Islamic Azad University, Najafabad Branch	Mechanical Engineering & Transports	Rank 91
64	9,669	NV Nourani, Vahid	University of Tabriz	Environmental Engineering	Rank 45
65	9,836	PS Pirsa, Sajad	Urmia University	Food Science	Rank 84
66	9,993	MM Molaei, Mohammad Jafar	Shahrood University of Technology	Materials	Rank 181
67	10,093	NH Namazi, Hassan	University of Tabriz	Polymers	Rank 65
68	10,136	RB Ramavandi, Bahman	Bushehr University of Medical Sciences	Environmental Sciences	Rank 221
69	10,217	HK Hajian-Taliki, Karimollah	Babol University of Medical Sciences, Faculty of Medicine	General & Internal Medicine	Rank 174
70	10,284	SB Salehi, Bahare	Shahid Beheshti University of Medical Sciences	Biochemistry & Molecular Biology	Rank 168
71	10,319	AA Ashori, Alireza	Iranian Research Organization for Science and Technology	Polymers	Rank 69
72	10,741	EA Ensafi, Ail A.	Isfahan University of Technology	Analytical Chemistry	Rank 46
73	10,768	BM Bahiraei, Mehdi	Razi University	Chemical Engineering	Rank 52
74	10,843	RA Rahmani, Amir Masoud	Islamic Azad University, Science and Research Branch	Networking & Telecommunications	Rank 112
75	10,883	Dehghani, Mohammad Javad	Shiraz University of Technology	Artificial Intelligence & Image Processing	Rank 537
76	11,020	AS Athari, Seyyed Shamsadin	School of Medicine, Zanjan University of Medical Sciences (ZUMS)	General & Internal Medicine	Rank 180
77	11,236	HE Hemmat Esfe, Mohammad	Semnan University	Mechanical Engineering & Transports	Rank 109
78	11,254	MM Miransari, Mohammad	AbtinBerkeh Scientific Ltd. Company	Agronomy & Agriculture	Rank 71
79	11,297	KR Kolahchi, Reza J.	University of Kashan	Mechanical Engineering & Transports	Rank 111
80	11,513	VV Vatanpour, Vahid	Kharazmi University	Chemical Engineering	Rank 57
81	11,648	NG Najafi, Gholamhassan	Tarbiat Modares University	Energy	Rank 311
82	11,702	PS Pirouzi, Sasan	Islamic Azad University	Energy	Rank 313
83	11,796	MR Malekzadeh, Reza	Tehran University of Medical Sciences	General & Internal Medicine	Rank 193
84	12,130	Sharifi, Alireza	Shahid Beheshti University	Geological & Geomatics Engineering	Rank 134
85	12,336	AS Azizian, Saeid	Bu-Ali Sina University	Chemical Physics	Rank 203
86	12,754	KM Keshavarz-Ghorabaee, Mehdi	Gonbad Kavous University	Logistics & Transportation	Rank 38
87	12,756	NH Nassiraei, Hossein	University of Guilan	Civil Engineering	Rank 53
88	12,786	VH Veisi, Hojat	Payame Noor University	Organic Chemistry	Rank 156
89	13,278	BH Beitollahi, Hadi	Graduate University of Advanced Technology	Analytical Chemistry	Rank 57
90	13,329	GA Goli, Alireza	University of Isfahan	Artificial Intelligence & Image Processing	Rank 639
91	13,580	RM Rezakazemi, Mashallah	Shahrood University of Technology	Chemical Engineering	Rank 75
92	13,609	ZV Zare, Vahid	University of Tabriz	Energy	Rank 373
93	13,670	MO Moradi, Omid	Islamic Azad University, Shahr-e Qods Branch	Nanoscience & Nanotechnology	Rank 451
94	14,031	HM Hatami, Mohammad Famil	Esfarayen University of Technology	Mechanical Engineering & Transports	Rank 132
95	14,158	SA Shahsavar, Amin	Kermanshah University of Technology	Energy	Rank 393
96	14,268	SA Simchi, Abdolreza (Arash)	Sharif University of Technology	Materials	Rank 269
97	14,417	AK Abbaspour, Karim C.	Semnan University	Environmental Engineering	Rank 72
98	14,489	FR Foroutan, Rauf	University of Tabriz	Chemical Engineering	Rank 82
99	14,588	MA Mosadeghrad, Ali Mohammad	School of Public Health	General & Internal Medicine	Rank 220
100	14,615	AZ Asemi, Zatollah	Kashan University of Medical Sciences	Nutrition & Dietetics	Rank 89
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Countries with a similar count

Single-year list2025

South Korea3,695 scientists

Switzerland3,549 scientists

Sweden2,666 scientists

Belgium2,124 scientists

Saudi Arabia2,110 scientists

Denmark2,061 scientists

Explore other countries

Single-year list2025

India6,236 scientists

Pakistan946 scientists

Bangladesh286 scientists

Sri Lanka53 scientists

Nepal30 scientists

China31,697 scientists

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Frequently asked questions

How many scientists from Iran are in the 2025 Stanford Top 2% list?

2,534 scientists affiliated with Iran are on the 2025 single-year list, and 1,201 are on the career-long list.

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

On the 2025 single-year list, University of Tehran has the most listed scientists from Iran, with 119. It is followed by Tehran University of Medical Sciences with 96.

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 2,534 in 2025, a change of +119.6%.

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.