Citation Rankings
Highly Cited Researchers

World Highly Cited Researchers CitationLaw / Constitutional Law Rankings 2025

The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection :126
United States
Aviam Soifer
Constitutional Law
Legal History
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,705
210
0.123
* Total Citation Counts Rankings
Ranking Based On Selection :127
Czech Republic
David Kosar
Comparative Constitutional Law
Constitutional Theory
Judicial Studies (Courts and Judges)
Transitional Justice
Freedom of Sp
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
1,151
0.682
* Total Citation Counts Rankings
Ranking Based On Selection :128
United States
James R May
environmental law
environmental constitutionalism
comparative constitutional law
dignity law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
974
0.577
* Total Citation Counts Rankings
Ranking Based On Selection :129
United States
Diane Marie Amann
international law
constitutional law
crim law
child & human rts & security
global legal history
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,681
271
0.161
* Total Citation Counts Rankings
Ranking Based On Selection :130
United States
Lawrence Friedman
Constitutional Law
State Constitutional Law
Privacy Law
National Security Law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,657
418
0.252
* Total Citation Counts Rankings
Ranking Based On Selection :131
United States
Richard Seamon
administrative law
constitutional law
criminal procedure
appellate advocacy
federal courts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,655
172
0.104
* Total Citation Counts Rankings
Ranking Based On Selection :132
United States
Caroline Mala Corbin
First Amendment
free speech
religion
equal protection
constitutional law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,646
848
0.515
* Total Citation Counts Rankings
Ranking Based On Selection :133
Australia
Anthony J Regan
Constitutional Law in post conflict situations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,622
495
0.305
* Total Citation Counts Rankings
Ranking Based On Selection :134
Canada
Dwight Newman
Indigenous Rights
Constitutional Law
Philosophy of Law
Law and Religion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,613
648
0.402
* Total Citation Counts Rankings
Ranking Based On Selection :135
United States
Jonathan Turley
Constitutional Law
National Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,612
284
0.176
* Total Citation Counts Rankings
Ranking Based On Selection :136
United States
Timothy Zick
first amendment
constitutional law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,609
516
0.321
* Total Citation Counts Rankings
Ranking Based On Selection :137
United States
Robert J Delahunty
International Law
Constitutional Law
Conflict of Laws
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,593
368
0.231
* Total Citation Counts Rankings
Ranking Based On Selection :138
United States
Nelson Tebbe
Religious liberty
freedom of speech
constitutional law and theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
782
0.493
* Total Citation Counts Rankings
Ranking Based On Selection :139
Spain
Benito Alaez Corral
derecho constitucional
constitutional law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,569
708
0.451
* Total Citation Counts Rankings
Ranking Based On Selection :140
United States
Matthew Hegreness
Food and Drug Law
Constitutional Law
Population Genetics
Biochemistry
Evolutionary Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,563
569
0.364
* Total Citation Counts Rankings
Ranking Based On Selection :141
Italy
Tania Groppi
Constitutional Law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,557
542
0.348
* Total Citation Counts Rankings
Ranking Based On Selection :142
Australia
Nicholas Aroney
Constitutional law
Legal theory
Legal history
Federalism
Law and religion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,550
674
0.435
* Total Citation Counts Rankings
Ranking Based On Selection :143
United States
Holning Lau
Comparative Constitutional Law
Comparative Law
Family Law
Human Rights
LGBTI Rights
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,550
588
0.379
* Total Citation Counts Rankings
Ranking Based On Selection :144
Australia
Melissa Castan
Constitutional law
Indigenous legal issues
legal education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,544
568
0.368
* Total Citation Counts Rankings
Ranking Based On Selection :145
United States
Russell K Robinson
stigma
discrimination
constitutional law
social psychology
media and culture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,530
589
0.385
* Total Citation Counts Rankings
Ranking Based On Selection :146
Canada
Kiera Ladner
Indigenous Politics
Canadian Politics
Federalism
Constitutional Law and Politics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,513
741
0.490
* Total Citation Counts Rankings
Ranking Based On Selection :147
Canada
Stephane Beaulac
International Law
Constitutional Law
Human Rights
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,506
430
0.286
* Total Citation Counts Rankings
Ranking Based On Selection :148
Italy
Giuseppe Martinico
European Constitutional Law
Comparative Federalism
Comparative Constitutional Law
Constitutional Theory
Populism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,476
784
0.531
* Total Citation Counts Rankings
Ranking Based On Selection :149
United States
Risa Goluboff
legal history
constitutional law
civil rights
Supreme Court
police
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,468
497
0.339
* Total Citation Counts Rankings
Ranking Based On Selection :150
United States
Osagie K Obasogie
Constitutional Law
Medicine
Policing
Bioethics
Race
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,459
1,056
0.724
* Total Citation Counts Rankings
Rankings
491,158
United States
153,016
391
Ranking Based On Selection: 126
Aviam Soifer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,705
210
0.123
* Total Citation Counts Rankings
Rankings
494,358
Czech Republic
1,390
148
Ranking Based On Selection: 127
David Kosar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
1,151
0.682
Comparative Constitutional Law
Constitutional Theory
Judicial Studies (Courts and Judges)
Transitional Justice
Freedom of Sp
* Total Citation Counts Rankings
Rankings
494,598
United States
153,907
13
Ranking Based On Selection: 128
James R May
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,687
974
0.577
environmental law
environmental constitutionalism
comparative constitutional law
dignity law
* Total Citation Counts Rankings
Rankings
495,916
United States
154,282
690
Ranking Based On Selection: 129
Diane Marie Amann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,681
271
0.161
international law
constitutional law
crim law
child & human rts & security
global legal history
* Total Citation Counts Rankings
Rankings
500,820
United States
155,595
2
Ranking Based On Selection: 130
Lawrence Friedman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,657
418
0.252
Constitutional Law
State Constitutional Law
Privacy Law
National Security Law
* Total Citation Counts Rankings
Rankings
501,209
United States
155,693
184
Ranking Based On Selection: 131
Richard Seamon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,655
172
0.104
administrative law
constitutional law
criminal procedure
appellate advocacy
federal courts
* Total Citation Counts Rankings
Rankings
502,953
United States
156,167
638
Ranking Based On Selection: 132
Caroline Mala Corbin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,646
848
0.515
First Amendment
free speech
religion
equal protection
constitutional law
* Total Citation Counts Rankings
Rankings
507,946
Australia
20,547
873
Ranking Based On Selection: 133
Anthony J Regan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,622
495
0.305
Constitutional Law in post conflict situations
* Total Citation Counts Rankings
Rankings
509,777
Canada
19,078
441
Ranking Based On Selection: 134
Dwight Newman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,613
648
0.402
Indigenous Rights
Constitutional Law
Philosophy of Law
Law and Religion
* Total Citation Counts Rankings
Rankings
510,045
United States
158,000
458
Ranking Based On Selection: 135
Jonathan Turley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,612
284
0.176
Constitutional Law
National Security
* Total Citation Counts Rankings
Rankings
510,690
United States
158,182
137
Ranking Based On Selection: 136
Timothy Zick
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,609
516
0.321
* Total Citation Counts Rankings
Rankings
514,164
United States
159,116
40
Ranking Based On Selection: 137
Robert J Delahunty
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,593
368
0.231
International Law
Constitutional Law
Conflict of Laws
* Total Citation Counts Rankings
Rankings
515,405
United States
159,427
798
Ranking Based On Selection: 138
Nelson Tebbe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,587
782
0.493
Religious liberty
freedom of speech
constitutional law and theory
* Total Citation Counts Rankings
Rankings
519,261
Spain
16,303
322
Ranking Based On Selection: 139
Benito Alaez Corral
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,569
708
0.451
derecho constitucional
constitutional law
* Total Citation Counts Rankings
Rankings
520,555
United States
160,812
1,654
Ranking Based On Selection: 140
Matthew Hegreness
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,563
569
0.364
Food and Drug Law
Constitutional Law
Population Genetics
Biochemistry
Evolutionary Biology
* Total Citation Counts Rankings
Rankings
521,889
Italy
22,741
236
Ranking Based On Selection: 141
Tania Groppi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,557
542
0.348
* Total Citation Counts Rankings
Rankings
523,393
Australia
21,096
1,569
Ranking Based On Selection: 142
Nicholas Aroney
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,550
674
0.435
Constitutional law
Legal theory
Legal history
Federalism
Law and religion
* Total Citation Counts Rankings
Rankings
523,405
United States
161,576
1,286
Ranking Based On Selection: 143
Holning Lau
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,550
588
0.379
Comparative Constitutional Law
Comparative Law
Family Law
Human Rights
LGBTI Rights
* Total Citation Counts Rankings
Rankings
524,766
Australia
21,157
1,622
Ranking Based On Selection: 144
Melissa Castan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,544
568
0.368
Constitutional law
Indigenous legal issues
legal education
* Total Citation Counts Rankings
Rankings
527,777
United States
162,725
2,006
Ranking Based On Selection: 145
Russell K Robinson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,530
589
0.385
stigma
discrimination
constitutional law
social psychology
media and culture
* Total Citation Counts Rankings
Rankings
531,569
Canada
19,705
339
Ranking Based On Selection: 146
Kiera Ladner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,513
741
0.490
Indigenous Politics
Canadian Politics
Federalism
Constitutional Law and Politics
* Total Citation Counts Rankings
Rankings
533,224
Canada
19,753
706
Ranking Based On Selection: 147
Stephane Beaulac
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,506
430
0.286
International Law
Constitutional Law
Human Rights
* Total Citation Counts Rankings
Rankings
539,881
Italy
23,457
52
Ranking Based On Selection: 148
Giuseppe Martinico
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,476
784
0.531
European Constitutional Law
Comparative Federalism
Comparative Constitutional Law
Constitutional Theory
Populism
* Total Citation Counts Rankings
Rankings
541,761
United States
166,391
999
Ranking Based On Selection: 149
Risa Goluboff
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,468
497
0.339
legal history
constitutional law
civil rights
Supreme Court
police
* Total Citation Counts Rankings
Rankings
543,687
United States
166,864
2,066
Ranking Based On Selection: 150
Osagie K Obasogie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,459
1,056
0.724
Constitutional Law
Medicine
Policing
Bioethics
Race