Top countries for Surgery

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Which countries have the most top-cited scientists in Surgery?

3,089 researchers whose main subfield is Surgery are in the 2026 list of top-cited scientists, the annual ranking often called the Stanford–Elsevier top 2% scientists list. The United States has the most (1,372, 44.4%), followed by the United Kingdom (212) and Italy (187). A country with 100 or more opens its institutions in the subfield; the others open their scientists in the table of all authors.

#	Country	Listed authors	Top 100k	Share of subfield	Highest-ranked author	Top institution
1	United States	1,372	212	44.4%	Pawlik, Timothy M. #4,218	Harvard Medical School
2	United Kingdom	212	29	6.9%	Ashrafian, Hutan #11,681	Imperial College London
3	Italy	187	26	6.1%	Mazzaferro, Vincenzo Maria #5,923	Fondazione Policlinico Universitario Agostino Gemelli IRCCS
4	Japan	145	15	4.7%	Ogawa, Rei #4,794	Graduate School of Medicine
5	Germany	137	16	4.4%	Hackert, Thilo H. #21,241	Universitätsklinikum Heidelberg
6	France	110	16	3.6%	Adam, Reńe A. #11,299	Université Paris-Saclay
7	Netherlands	102	8	3.3%	Besselink, Marc G.H. #9,221	Amsterdam UMC - University of Amsterdam
8	Canada	101	18	3.3%	Halloran, P. F. #13,961	University Health Network
9	Australia	65	11	2.1%	Balogh, Zsolt J. #32,377	Monash University
10	South Korea	62	3	2.0%	Hong, Joonpio Jp #39,512	Seoul National University College of Medicine
11	Switzerland	61	3	2.0%	Clavien, Pierre Alain #3,037	Centre Hospitalier Universitaire Vaudois
12	China	58	2	1.9%	Ren, J. #49,495	Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine
13	Spain	42	3	1.4%	Morales-Conde, Salvador #60,316	Hospital Universitari Vall d'Hebron
14	Sweden	41	3	1.3%	Ljungqvist, Olle H. #3,175	Karolinska Universitetssjukhuset
15	Taiwan	34	1	1.1%	Wei, Fu-Chan Chain #88,149	Chang Gung Memorial Hospital
16	Belgium	33	7	1.1%	Naesens, M. #27,543	KU Leuven– University Hospital Leuven
17	India	26	0	0.8%	Garg, Pankaj K. #101,349	All India Institute of Medical Sciences, New Delhi
18	Austria	24	1	0.8%	Strobel, Oliver #57,394	Medizinische Universität Wien
19	Denmark	23	5	0.7%	Gögenür, Ismail #30,879	Rigshospitalet
20	Brazil	22	0	0.7%	Perez, Rodrigo Oliva #124,297	Universidade Federal de São Paulo
21	Ireland	21	1	0.7%	Reynolds, John Vincent #76,101	St Vincent's University Hospital
22	Greece	18	1	0.6%	Schizas, Dimitrios N. #84,363	National and Kapodistrian University of Athens
23	Hong Kong	15	3	0.5%	Lau, Joseph Wan Yee #27,252	The University of Hong Kong Li Ka Shing Faculty of Medicine
24	Singapore	15	4	0.5%	Tan, Ker Kan #44,859	NUS Yong Loo Lin School of Medicine
25	Norway	14	1	0.5%	Soreide, K. #9,467	Universitetet i Oslo
26	New Zealand	14	2	0.5%	Windsor, John A. #70,491	University of Auckland
27	Poland	13	1	0.4%	Luigi, Marano #86,451	Jagiellonian University Medical College
28	Türkiye	12	1	0.4%	Akbulut, Sami #73,625	Inönü Üniversitesi
29	Finland	11	2	0.4%	Leppäniemi, Ari Kalevi #27,176	Turun Yliopistollinen Keskussairaala
30	Israel	9	0	0.3%	Bala, Miklosh #135,055	Chaim Sheba Medical Center Israel
31	Romania	6	1	0.2%	Negoi, I. #42,551	Universitatea de Medicina si Farmacie Carol Davila din Bucuresti
32	South Africa	6	0	0.2%	Hardcastle, Timothy Craig #233,590	Stellenbosch University
33	Qatar	5	2	0.2%	Glass, Graeme Ewan #75,354	Hamad Medical Corporation
34	Portugal	4	2	0.1%	Búchler, Markus Wolfgang #15,579	Champalimaud Foundation
35	Colombia	4	0	0.1%	Daes, Jorge E. #123,879	Carrera 50 No 79-223 PH B
36	Argentina	4	0	0.1%	Schlottmann, Francisco #126,180	Hospital Italiano de Buenos Aires
37	Mexico	4	0	0.1%	Singh, Tajinder P. #135,212	Academy of Master Surgeon Educators
38	Iran	4	0	0.1%	Geramizadeh, Bita #160,938	Iran University of Medical Sciences
39	Saudi Arabia	4	0	0.1%	Bröering, Dieter Clemens #179,082	King Faisal Specialist Hospital & Research Centre
40	Iraq	3	1	0.1%	Ahmed, Sirwan Khalid #25,492	Independent Researcher
41	Thailand	3	1	0.1%	Lohsiriwat, Varut #37,825	Siriraj Hospital
42	Lebanon	3	2	0.1%	Atiyeh, Bishara Shafic #54,635	American University of Beirut
43	Puerto Rico	3	0	0.1%	Pinna, Antonio Daniele #144,571	Cleveland Clinic Florida
44	Egypt	2	1	0.1%	Emile, Sameh Hany #22,536	Mansoura University Hospitals
45	Jordan	2	1	0.1%	Abu Hilal, Mohammad #60,108	The University of Jordan
46	United Arab Emirates	2	1	0.1%	Abu‑Zidan, Fikri M. #65,526	United Arab Emirates University
47	Croatia	2	0	0.1%	Augustin, Goran #139,855	University of Zagreb School of Medicine
48	Kuwait	2	0	0.1%	Al-Sabah, Salman K. #167,083	Kuwait University
49	Ethiopia	2	0	0.1%	Abate, Semagn Mekonnen #202,160	Wollo University
50	Nigeria	2	0	0.1%	Aborode, Abdullahi Tunde #246,386	Healthy Africans Platform
51	Pakistan	2	0	0.1%	Mumtaz, Hassan #275,602	Health Services Academy Islamabad
52	Lithuania	2	0	0.1%	Dulskas, Audrius #287,393	Vilniaus Universitetas
53	Russia	2	0	0.1%	Shabunin, A. V. #408,792	Moscow Healthcare Department
54	Chile	2	0	0.1%	Beltrán, Marcelo A.S. #475,671	Hospital de La Serena
55	Ukraine	2	0	0.1%	Melnitchouk, Nelya #501,484	Global Medical Knowledge Alliance (GMKA)
56	Liberia	1	1	0.0%	Makary, Martin A. #34,635	US Food and Drug Administration
57	Azerbaijan	1	0	0.0%	Farkas, Leslie G. #107,942	Azerbaijan Medical University
58	Sri Lanka	1	0	0.0%	Jayarajah, Umesh Umesh #232,070	University of Colombo Faculty of Medicine
59	Malaysia	1	0	0.0%	Kok Wah, Jack Ng #254,008	Multimedia University
60	Bangladesh	1	0	0.0%	Hasan, Mohammad Mehedi Mehedi #258,582	Mawlana Bhashani Science and Technology University
61	Cameroon	1	0	0.0%	Weledji, Elroy Patrick #316,412	University of Buea
62	Syria	1	0	0.0%	Swed, Sarya #321,426	Damascus University
63	Peru	1	0	0.0%	Ciudad, Pedro #351,522	Clínica Internacional
64	Hungary	1	0	0.0%	Mehta, Aashna #453,013	Általános Orvostudományi Kar
65	Andorra	1	0	0.0%	Vilallonga, R. #461,802	University of Andorra
66	Rwanda	1	0	0.0%	Bekele, Abebe Belayneh #542,026	University of Global Health Equity
67	Ghana	1	0	0.0%	Gyedu, Adam #546,919	Kwame Nkrumah University of Science & Technology
68	Kazakhstan	1	0	0.0%	Ospanov, Oral Bazarbayevich #2,420,687	Astana Medical University