Lebanon's Top 2% Scientists 2025: Career-Long List

Lebanon has 92 scientists on the 2025 career-long Top 2% list, up 17.9% from 78 in 2024. That places Lebanon 59th in the world by number of listed scientists, down 2 places. American University of Beirut has the most listed scientists (57), followed by Lebanese American University (14).

Single Year

-7 (-6.7%) vs 2024

Career Data

+14 (+17.9%) vs 2024

World rank by count

#59

down 2 places vs 2024

Institutes

+1 (+7.1%) vs 2024

Scientists in Lebanon on the list, by year

The career-long count has grown 92% since 2020.

Career-long list, change on the previous year

2021+22.9%

2022+5.1%

2023+0.0%

2024+25.8%

2025+17.9%

Show the numbers

Year	Single Year	Change	Career Data	Change
2020	56		48
2021	67	+19.6%	59	+22.9%
2022	71	+6.0%	62	+5.1%
2023	72	+1.4%	62	+0.0%
2024	105	+45.8%	78	+25.8%
2025	98	-6.7%	92	+17.9%

Top 10 institutes in Lebanon

By number of listed scientists

Career-long list2025

Show the list

All 92 scientists

Career-long list2025

Everyone on the list, free to browse.

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Rank in Lebanon	World rank	Scientist	Institute	Sub-field	Rank in sub-field
1	2,404	BD Baleanu, Dumitru I.	Lebanese American University	Applied Mathematics	Rank 8
2	5,650	ZM Zembylas, Michalinos	Lebanese American University	Education	Rank 21
3	13,411	ZF Ziyadeh, Fuad N.	American University of Beirut	Urology & Nephrology	Rank 133
4	15,779	KF Khuri, Fadlo R.	American University of Beirut	Oncology & Carcinogenesis	Rank 681
5	16,308	BE Bouri, Elie I.	Lebanese American University	Finance	Rank 25
6	16,812	SR Sawaya, Raymond E.	American University of Beirut	Oncology & Carcinogenesis	Rank 738
7	17,284	JR Jabr, Rabih A.	American University of Beirut	Energy	Rank 196
8	17,701	SM Sayegh, Mohamed H.	American University of Beirut	Immunology	Rank 621
9	31,533	HJ Haddad, John J.	Faculty of Medicine	Biochemistry & Molecular Biology	Rank 1,297
10	42,958	EF El-Hajj Fuleihan, Ghada A.	American University of Beirut	Endocrinology & Metabolism	Rank 977
11	44,146	AE Akl, Elie A.	American University of Beirut	General & Internal Medicine	Rank 587
12	49,473	BA Baraka, Anis Shehata	American University of Beirut	Anesthesiology	Rank 173
13	49,712	Kirikkaleli, Dervis	Lebanese American University	Environmental Sciences	Rank 340
14	50,729	TA Taher, Ali T.	American University of Beirut	Immunology	Rank 1,481
15	52,299	KJ Khatib, Jamal M.	Beirut Arab University	Building & Construction	Rank 128
16	54,767	MA Mansour, Ahmad M.	American University of Beirut	Ophthalmology & Optometry	Rank 355
17	59,818	HM Harajlí, Mohamed H.	American University of Beirut	Civil Engineering	Rank 111
18	63,064	DA Dietrich, Arne	American University of Beirut	Experimental Psychology	Rank 778
19	66,739	AB Atiyeh, Bishara Shafic	American University of Beirut	Surgery	Rank 574
20	68,646	KS Khoury, Samia J.	American University of Beirut	Neurology & Neurosurgery	Rank 4,521
21	71,072	BA Beydoun, Ahmad A.	American University of Beirut	Neurology & Neurosurgery	Rank 4,670
22	73,336	SA Shihadeh, Alan Louis	American University of Beirut	Public Health	Rank 685
23	74,557	KS Kadry, Seifedine Nimer	Lebanese American University	Artificial Intelligence & Image Processing	Rank 1,547
24	79,185	OI Osman, Ibrahim H.	Suliman S. Olayan School of Business	Operations Research	Rank 286
25	79,948	FM Fellows, Michael R.	Lebanese American University	Computation Theory & Mathematics	Rank 210
26	84,941	AH Abu-Saad, Huda Huijer	University of Balamand	Nursing	Rank 146
27	90,529	KE Karam, Elie Georges	Saint George Hospital University Medical Center	Psychiatry	Rank 1,606
28	92,472	MA Mehio-Sibai, Abla Mehio	American University of Beirut	General & Internal Medicine	Rank 1,143
29	97,843	ML Meho, Lokman I.	American University of Beirut	Information & Library Sciences	Rank 57
30	99,228	BK Badr, Kamal F.	American University of Beirut	Urology & Nephrology	Rank 1,058
31	99,262	GH Gali-Muhtasib, Hala Uthman	American University of Beirut	Oncology & Carcinogenesis	Rank 3,852
32	99,564	HP Henkind, Paul	American University of Beirut	Ophthalmology & Optometry	Rank 720
33	102,465	SS Saab, Samer S.	Lebanese American University	Industrial Engineering & Automation	Rank 787
34	106,019	GA Ghauch, Antoine	American University of Beirut	Environmental Sciences	Rank 796
35	107,516	PD Patra, Digambara	American University of Beirut	Chemical Physics	Rank 1,960
36	113,552	SA Sharara, Ala I.	American University of Beirut	Gastroenterology & Hepatology	Rank 1,548
37	113,944	SM Suidan, Makram T.	American University of Beirut	Environmental Engineering	Rank 552
38	117,884	GN Ghaddar, Nesreen K.	American University of Beirut	Building & Construction	Rank 320
39	123,300	AG Araj, George F.	American University of Beirut	Microbiology	Rank 3,051
40	128,387	AJ Assaad, Joseph Jean	University of Balamand	Building & Construction	Rank 354
41	134,283	BA Bazarbachi, Ali Abdul Hamid	American University of Beirut	Immunology	Rank 3,455
42	141,105	MA Megarbane, Andre	Lebanese American University	Genetics & Heredity	Rank 717
43	144,656	UM Umar, Muhammad	Lebanese American University	Environmental Sciences	Rank 1,163
44	150,841	HN Hwalla, Nahla C.	American University of Beirut	Nutrition & Dietetics	Rank 1,006
45	153,282	YK Yammine, K. Cesar	Lebanese American University	Orthopedics	Rank 1,163
46	160,930	OT Oweis, T. Y.	International Center for Agricultural Research in the Dry Areas Syria	Agronomy & Agriculture	Rank 908
47	165,362	IY Illouz, Yves Gérard	American University of Beirut	Surgery	Rank 1,499
48	172,409	EF El-Jardali, Fadi	American University of Beirut	Health Policy & Services	Rank 459
49	175,912	SM Seoud, Muhieddine A.F.	American University of Beirut	Obstetrics & Reproductive Medicine	Rank 1,703
50	180,633	AM Al-Alaoui, Mohamad Adnan	American University of Beirut	Electrical & Electronic Engineering	Rank 554
51	183,273	AA Abdel-Rahman, Abdel Fattah M.	American University of Beirut	Geology	Rank 307
52	185,102	SP Salameh, Pascale R.	Université Libanaise	General & Internal Medicine	Rank 2,370
53	188,462	Khalil, Mahmoud I.	Beirut Arab University	Polymers	Rank 1,688
54	191,171	UI Usta, Ihab M.	American University of Beirut	Obstetrics & Reproductive Medicine	Rank 1,829
55	197,754	KB Kaafarani, Bilal R.	American University of Beirut	Organic Chemistry	Rank 3,327
56	202,845	GK Ghali, Kamel Abou	American University of Beirut	Building & Construction	Rank 600
57	207,373	BZ Beydoun, Ziad Rafiq	American University of Beirut	Energy	Rank 3,179
58	207,393	SK Singh, Kharag B.	International Center for Agricultural Research in the Dry Areas Syria	Plant Biology & Botany	Rank 3,069
59	214,297	SW Sabra, Wafic A.	American University of Beirut	Nuclear & Particle Physics	Rank 3,279
60	216,571	BS Boujaoude, Saouma B.	American University of Beirut	Education	Rank 1,668
61	221,201	YG Yared, Ghassan M.	Université Saint-Joseph de Beyrouth	Dentistry	Rank 1,366
62	222,580	AC Abou-Rjeily, Chadi	Lebanese American University	Networking & Telecommunications	Rank 2,194
63	225,580	MM Mansour, Mohammad M.	American University of Beirut	Networking & Telecommunications	Rank 2,231
64	228,690	SZ sabir, Zulqurnain	Lebanese American University	Artificial Intelligence & Image Processing	Rank 5,034
65	236,507	KR Khishfe, Rola	American University of Beirut	Education	Rank 1,862
66	241,022	MS Matar, Samir F.	Lebanese German University	Inorganic & Nuclear Chemistry	Rank 1,448
67	241,833	BR Barwell, Richard	American University of Beirut	Education	Rank 1,903
68	244,425	RK Rebeiz, Karim S.	University of Balamand	Building & Construction	Rank 753
69	251,697	AH Artail, Hassan Ali	American University of Beirut	Networking & Telecommunications	Rank 2,539
70	254,694	KV Khamis, Vivian	American University of Beirut	Education	Rank 2,024
71	255,356	HN Hawi, Nazir S.	Notre Dame University-Loauize	Education	Rank 2,033
72	255,581	DM Darwish, Marwan S.	American University of Beirut	Mechanical Engineering & Transports	Rank 1,918
73	256,336	KS Kumar, Shiv	International Center for Agricultural Researchin the	Plant Biology & Botany	Rank 3,870
74	260,865	HB Hamad, Bilal S.	American University of Beirut	Building & Construction	Rank 811
75	261,148	ZR Zurayk, Rami A.	American University of Beirut	Agronomy & Agriculture	Rank 1,554
76	264,779	TY Tawk, Youssef A.	American University of Beirut	Networking & Telecommunications	Rank 2,677
77	267,671	MM Massoud, May A.	American University of Beirut	Environmental Sciences	Rank 2,446
78	277,063	CR Chedid, Riad B.	American University of Beirut	Energy	Rank 4,505
79	284,530	RM Ramadan, Mohamad	Lebanese International University	Energy	Rank 4,658
80	290,180	JI Jawhar, Imad Hussein	Al Maaref University	Networking & Telecommunications	Rank 2,966
81	300,259	AB Abboud, Bassam N.	Université Libanaise	General & Internal Medicine	Rank 3,959
82	301,351	GJ Ghafari, Joseph George	American University of Beirut	Dentistry	Rank 1,974
83	316,712	HW Habchi, Wassim F.	Lebanese American University	Mechanical Engineering & Transports	Rank 2,425
84	319,277	AW Ammar, Walid	Université Saint-Joseph de Beyrouth	General & Internal Medicine	Rank 4,233
85	321,231	KB Kurdahi Badr, Lina Kurdahi	American University of Beirut	Nursing	Rank 1,190
86	321,738	AM Awad, Mariette	American University of Beirut	Artificial Intelligence & Image Processing	Rank 7,329
87	358,350	DZ Dawy, Zaher M.	American University of Beirut	Networking & Telecommunications	Rank 3,740
88	396,240	SI Salti, Ibrahim S.	American University of Beirut	General & Internal Medicine	Rank 5,291
89	400,127	AF Abu-Khzam, Faisal N.	Lebanese American University	Artificial Intelligence & Image Processing	Rank 9,423
90	444,713	AS Adib, Salim M.	American University of Beirut	General & Internal Medicine	Rank 5,977
91	565,217	KH Kanaan, Hadi Y.	Université Saint-Joseph de Beyrouth	Electrical & Electronic Engineering	Rank 2,261
92	615,743	FA Fardoun, Abbas Ahmad	Al Maaref University	Electrical & Electronic Engineering	Rank 2,481
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Showing 1 to 92 of 92 Show

Countries with a similar count

Career-long list2025

Bangladesh100 scientists

Croatia96 scientists

Vietnam94 scientists

Bulgaria91 scientists

Estonia85 scientists

Iraq79 scientists

Explore other countries

Career-long list2025

Israel2,204 scientists

Turkey1,308 scientists

Saudi Arabia850 scientists

United Arab Emirates389 scientists

Qatar176 scientists

Cyprus113 scientists

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Frequently asked questions

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

98 scientists affiliated with Lebanon are on the 2025 single-year list, and 92 are on the career-long list.

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

On the 2025 career-long list, American University of Beirut has the most listed scientists from Lebanon, with 57. It is followed by Lebanese American University with 14.

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

On the career-long list, Lebanon went from 48 scientists in 2020 to 92 in 2025, a change of +91.7%.

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.