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Which countries have the most top-cited scientists in Operations Research?

674 researchers whose main subfield is Operations Research 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 (173, 25.7%), followed by China (66) and the United Kingdom (62). 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	173	113	25.7%	Saaty, Thomas L. #421	College of Engineering
2	China	66	31	9.8%	Lu, Yang #4,242	South China University of Technology
3	United Kingdom	62	41	9.2%	Choi, Tsan Ming #477	Cardiff Business School
4	Canada	35	26	5.2%	Laporte, Gilbert #990	HEC Montréal
5	Italy	31	19	4.6%	De Giovanni, Pietro #4,609	Alma Mater Studiorum Università di Bologna
6	Germany	28	14	4.2%	Ivanov, Dmitry Aleksandrovich #44	Technische Universität München
7	India	24	11	3.6%	Javaid, Mohd #1,578	The University of Burdwan
8	France	24	13	3.6%	Dolgui, Alexandre B. #3,971	INSEAD, Europe
9	Hong Kong	21	15	3.1%	Cheng, T. C.Edwin #4,587	The Hong Kong Polytechnic University
10	Taiwan	21	13	3.1%	Kao, Chiang #13,515	National Tsing Hua University
11	Iran	17	7	2.5%	Taleizadeh, A. A. #14,108	University of Tehran
12	Australia	14	9	2.1%	Govindan, Kannan #136	The University of Adelaide
13	Brazil	14	8	2.1%	Frank, Alejandro Germán #24,326	Universidade Federal do Rio Grande do Sul
14	Netherlands	11	7	1.6%	Rezaei, Jafar #1,213	Erasmus School of Economics
15	Belgium	10	10	1.5%	Nesterov, Yu E. #2,289	KU Leuven
16	Türkiye	10	5	1.5%	Yılmaz, Ömer Faruk #60,284	Hacettepe Üniversitesi
17	Israel	9	6	1.3%	Beck, Amir #10,962	Tel Aviv University
18	Spain	9	4	1.3%	Lozano, Sebastián #28,525	Universidad de Sevilla
19	Austria	9	6	1.3%	Malitsky, Yu V. #37,654	Universität Wien
20	United Arab Emirates	8	3	1.2%	Diabat, Ali H. #26,053	Khalifa University
21	Japan	7	6	1.0%	Tone, Kaoru #1,645	National Graduate Institute for Policy Studies
22	Singapore	6	3	0.9%	Goh, Mark K.h. #20,012	National University of Singapore
23	Greece	5	5	0.7%	Mavrotas, George #24,902	Technical University of Crete
24	Sweden	5	4	0.7%	Wu, Deshengdash Dash #36,642	Stockholm Business School
25	South Korea	4	2	0.6%	Sarkar, Biswajit #3,718	Yonsei University
26	Norway	4	2	0.6%	Sgarbossa, Fabio #56,907	Norges Teknisk-Naturvitenskapelige Universitet
27	Poland	4	1	0.6%	Weber, Gerhard Wilhelm #57,797	Politechnika Poznanska
28	Portugal	4	0	0.6%	Figueira, José Rui #133,779	Instituto Superior Técnico
29	Denmark	3	3	0.4%	Pisinger, David #7,819	Technical University of Denmark
30	Mexico	3	1	0.4%	Cárdenas-Barrón, Leopoldo Eduardo #25,467	Tecnológico de Monterrey
31	South Africa	3	2	0.4%	Olanrewaju, O. A. #65,579	Durban University of Technology
32	Oman	3	1	0.4%	Saen, Reza Farzipoor #85,128	Sultan Qaboos University
33	Chile	2	1	0.3%	Voß, Stefan #32,845	Pontificia Universidad Católica de Valparaíso
34	Switzerland	2	2	0.3%	Taillard, Éric D. #32,865	University of Applied Sciences Western Switzerland
35	Finland	2	1	0.3%	Kuosmanen, Timo #33,388	Turun yliopisto
36	Bangladesh	2	1	0.3%	Ahmed, Shabbir #55,945	International Centre for Diarrhoeal Disease Research Bangladesh
37	Qatar	2	1	0.3%	Baldacci, Roberto #83,357	Hamad Bin Khalifa University, College of Science and Engineering
38	Malaysia	2	1	0.3%	Khoo, M. B.C. #86,241	Universiti Sains Malaysia
39	Czechia	2	0	0.3%	Hladík, Milan #101,561	Charles University
40	Macao	1	1	0.1%	Chan, Felix T.S. #9,053	School of Business
41	Morocco	1	1	0.1%	Belhadi, Amine #16,429	International University of Rabat
42	Iceland	1	1	0.1%	Sawik, Tadeusz J. #16,504	Reykjavík University
43	Vietnam	1	1	0.1%	van Hieu, Dang #60,795	College of Air Force
44	Colombia	1	1	0.1%	Montoya-Torres, Jairo R. #83,341	Universidad de La Sabana
45	Pakistan	1	1	0.1%	Haq, Abdul #93,187	Quaid-i-Azam University
46	Hungary	1	1	0.1%	Csató, László #99,682	HUN-REN Institute for Computer Science and Control
47	Saudi Arabia	1	0	0.1%	Riaz, Muhammad #128,242	King Fahd University of Petroleum and Minerals
48	Tunisia	1	0	0.1%	Euchi, Jalel #131,996	Université de Gafsa
49	Indonesia	1	0	0.1%	Utama, Dana Marsetiya #156,349	Universitas Muhammadiyah Malang
50	Philippines	1	0	0.1%	Gumasing, Ma Janice J. #156,987	De La Salle University
51	Russia	1	0	0.1%	Mukhametzyanov, I. Z. #171,045	Russian Academy of Sciences
52	Egypt	1	0	0.1%	El-Hadidy, Mohamed Abd Allah #5,388,317	Tanta University