Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (1,010,204 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :1
Alan F Smeaton Mria
multimedia information retrieval
lifelogging
video processing
educational technology
learning
Metrics
H-Index
i10 Index
Citation
74
355
23,490
* Rankings
Ranking Based On Selection :2
Noel E O Connor
Multimedia content analysis
information retrieval
machine learning
artificial intelligence
computer vision
Metrics
H-Index
i10 Index
Citation
61
294
16,601
* Rankings
Ranking Based On Selection :3
Gabriel Miro Muntean
Network Performance
Multimedia Delivery
Energy-aware Communications
Software Engineering
Metrics
H-Index
i10 Index
Citation
58
260
12,015
* Rankings
Ranking Based On Selection :4
Gareth Jf Jones
Natural Language Engineering
Information Retrieval
Multimedia Technologies
Human-Computer Interaction
Metrics
H-Index
i10 Index
Citation
51
228
10,161
* Rankings
Ranking Based On Selection :5
Rory V O Connor
Software Process
Process Improvement
Software Process Improvement
Software Engineering
Gamification
Metrics
H-Index
i10 Index
Citation
45
160
7,390
* Rankings
Ranking Based On Selection :6
Cathal Gurrin
Lifelogging
Quantified Self
Personal Data
Mobile HCI
Multimedia Information Retrieval
Metrics
H-Index
i10 Index
Citation
42
163
7,028
* Rankings
Ranking Based On Selection :7
Muhammad Intizar Ali
Real-Time Data Analytics
Artificial Intelligence
IoT
Stream Query Processing & Optimisation
Knowledge Graphs and Linked Data
Metrics
H-Index
i10 Index
Citation
37
80
4,471
* Rankings
Ranking Based On Selection :8
Kevin Mcguinness
Computer Vision
Image Processing
Machine Learning
Information Retrieval
Deep Learning
Metrics
H-Index
i10 Index
Citation
33
71
6,523
* Rankings
Ranking Based On Selection :9
Paul Clarke
Software Process Management & Adaptation
Serverless Computing
Situational Factors Affecting the Software Process
Open Source
Metrics
H-Index
i10 Index
Citation
27
62
2,625
* Rankings
Ranking Based On Selection :10
Xiaojun Wang
Internet of Things
Network Security
Hardware Acceleration
Cryptography
Energy-Efficient
Metrics
H-Index
i10 Index
Citation
26
71
2,306
* Rankings
Ranking Based On Selection :11
Jennifer Foster
Natural Language Processing
Parsing
Sentiment Analysis
Grammar Checking
Computational Linguistics
Metrics
H-Index
i10 Index
Citation
26
54
3,334
* Rankings
Ranking Based On Selection :12
Martin Crane
Time Series Analysis
Computational Finance
Complex Systems
Bioinformatics
Metrics
H-Index
i10 Index
Citation
24
47
4,034
* Rankings
Ranking Based On Selection :13
Murat Yilmaz
Empirical Software Engineering
Gamification
Software Process Improvement
Agile Software Development
Metaverse
Metrics
H-Index
i10 Index
Citation
23
52
1,702
* Rankings
Ranking Based On Selection :14
Rob Brennan
AI and Data Governance
Data Value
Data Quality
Data Privacy
Knowledge Graphs
Metrics
H-Index
i10 Index
Citation
21
61
1,923
* Rankings
Ranking Based On Selection :16
Brian Davis
Computational Linguistics
Natural Language Processing
Information Extraction
Metrics
H-Index
i10 Index
Citation
20
39
1,795
* Rankings
Ranking Based On Selection :17
Johannes Leveling
Information Retrieval
Natural Language Processing
Machine Learning
Artificial Intelligence
Machine Translation
Metrics
H-Index
i10 Index
Citation
19
50
2,808
* Rankings
Ranking Based On Selection :19
Annalina Caputo
Information Retrieval
Natural Language Processing
Diachronic Analysis
Temporal Aware User Profiling
Metrics
H-Index
i10 Index
Citation
18
30
1,236
* Rankings
Ranking Based On Selection :20
Mark Roantree
Machine Learning
Data & Feature Engineering
Data Integration
Metrics
H-Index
i10 Index
Citation
18
47
1,354
* Rankings
Ranking Based On Selection :21
Graham Healy
brain-computer interfaces
machine learning
signal processing
Metrics
H-Index
i10 Index
Citation
18
34
1,761
* Rankings
Ranking Based On Selection :23
Martin Collier
Network Protocols
Internet of Things
Internet Privacy
Energy-Efficient Networks
Software-Defined Networking
Metrics
H-Index
i10 Index
Citation
16
36
1,522
* Rankings
Ranking Based On Selection :24
Francoise Blin
Computer Assisted Language Learning
Computer Supported Collaborative Language Learning
Activity Theory
Affordances
Metrics
H-Index
i10 Index
Citation
16
20
1,919
* Rankings
Ranking Based On Selection :25
Lamia Tounsi
Natural Language Processing
Statistical Parsing
Machine Learning
Morphologically Rich Languages
Data Analytics
Metrics
H-Index
i10 Index
Citation
14
18
1,146
* Rankings
Ranking Based On Selection :26
Lijuan Marissa Zhou
Infromation Retrival
Natural Language Processing
Software Engineering
Human Computer Interaction
data analysis
Metrics
H-Index
i10 Index
Citation
13
19
1,173
* Rankings
Ranking Based On Selection :28
Mingxue Wang
Root Cause Analysis
AIOps
Business Process as a Service
Metrics
H-Index
i10 Index
Citation
11
13
467
* Rankings
Ranking Based On Selection :29
Adam Bermingham
Sentiment Analysis
Machine Learning
Information Retrieval
Web Data Mining
Recommender Systems
Metrics
H-Index
i10 Index
Citation
10
10
1,890
* Rankings
Ranking Based On Selection :30
Charlie Daly
Digital Forensics
Computer Science Education
Metrics
H-Index
i10 Index
Citation
10
11
765
* Rankings
Ranking Based On Selection :31
Damien Comiskey
Data Science
Mathematical Modelling
Computer Simulation
Statistics
Metrics
H-Index
i10 Index
Citation
10
10
5,127
Utsab Barman
Machine Learning
Natural Language Processing
Data Science
Gen AI
Metrics
H-Index
i10 Index
Citation
8
7
780
Jogile Kuklyte
Machine learning
computer vision
signal processing
artificial intelligence
Metrics
H-Index
i10 Index
Citation
7
6
120
Jim O' Donoghue
Deep learning
machine learning
data mining
experiment databases
hyper-parameter optimisation
Metrics
H-Index
i10 Index
Citation
6
5
75
Hamza Riaz
Machine Learning
Recommender Systems
Computer Vision
Medical Imaging
Natural Language Processing
Metrics
H-Index
i10 Index
Citation
4
3
119
Abhishek Mandal
Computer Vision
Deep Learning
Multimodal Deep Learning
Metrics
H-Index
i10 Index
Citation
4
3
74
Yasser Abdelaziz Dahou Djilali
Machine learning
Deep learning
Visual Attention modelling
Metrics
H-Index
i10 Index
Citation
4
2
101
Qishan Yang
Deep Learning
Machine Learning
Big Data
Data Warehouse
Metrics
H-Index
i10 Index
Citation
4
1
53
Akshai Ramesh
Natural Language Processing
Neural Machine Translation
Deep Learning
Large Language Models
Metrics
H-Index
i10 Index
Citation
4
1
38
Sidra Aleem
Computer Vision
Medical Image Analysis
Deep Learning
Machine Learning
Image Processing
Metrics
H-Index
i10 Index
Citation
4
3
85
Mohammad Razib Mustafiz
Machine Learning
Artificial Intelligence
Data Science
Metrics
H-Index
i10 Index
Citation
3
2
37
Renaat Verbruggen
Software Engineering
Data Protection
Privacy
Cyber Ethics
Metrics
H-Index
i10 Index
Citation
3
1
98
Waqar Ahmad
Machine Learning
Deep Learning
Computer Vision
Healthcare
Metrics
H-Index
i10 Index
Citation
2
2
121
Asma Slaimi
Machine learning
Meta-learning
Time series
Data Integration
Metrics
H-Index
i10 Index
Citation
2
1
37
Michael Dever
Program Transformation
Formal Methods
Parallelization
Concurrent Programming
Metrics
H-Index
i10 Index
Citation
2
1
15
Rankings
Ranking Based On Selection: 1
Alan F Smeaton Mria
Metrics
H-Index
i10 Index
Citation Counts
74
355
23,490
multimedia information retrieval
lifelogging
video processing
educational technology
learning
Rankings
Ranking Based On Selection: 2
Noel E O Connor
Metrics
H-Index
i10 Index
Citation Counts
61
294
16,601
Multimedia content analysis
information retrieval
machine learning
artificial intelligence
computer vision
Rankings
Ranking Based On Selection: 3
Gabriel Miro Muntean
Metrics
H-Index
i10 Index
Citation Counts
58
260
12,015
Network Performance
Multimedia Delivery
Energy-aware Communications
Software Engineering
Rankings
Ranking Based On Selection: 4
Gareth Jf Jones
Metrics
H-Index
i10 Index
Citation Counts
51
228
10,161
Natural Language Engineering
Information Retrieval
Multimedia Technologies
Human-Computer Interaction
Rankings
Ranking Based On Selection: 5
Rory V O Connor
Metrics
H-Index
i10 Index
Citation Counts
45
160
7,390
Software Process
Process Improvement
Software Process Improvement
Software Engineering
Gamification
Rankings
Ranking Based On Selection: 6
Cathal Gurrin
Metrics
H-Index
i10 Index
Citation Counts
42
163
7,028
Lifelogging
Quantified Self
Personal Data
Mobile HCI
Multimedia Information Retrieval
Rankings
Ranking Based On Selection: 7
Muhammad Intizar Ali
Metrics
H-Index
i10 Index
Citation Counts
37
80
4,471
Real-Time Data Analytics
Artificial Intelligence
IoT
Stream Query Processing & Optimisation
Knowledge Graphs and Linked Data
Rankings
Ranking Based On Selection: 8
Kevin Mcguinness
Metrics
H-Index
i10 Index
Citation Counts
33
71
6,523
Computer Vision
Image Processing
Machine Learning
Information Retrieval
Deep Learning
Rankings
Ranking Based On Selection: 9
Paul Clarke
Metrics
H-Index
i10 Index
Citation Counts
27
62
2,625
Software Process Management & Adaptation
Serverless Computing
Situational Factors Affecting the Software Process
Open Source
Rankings
Ranking Based On Selection: 10
Xiaojun Wang
Metrics
H-Index
i10 Index
Citation Counts
26
71
2,306
Internet of Things
Network Security
Hardware Acceleration
Cryptography
Energy-Efficient
Rankings
Ranking Based On Selection: 11
Jennifer Foster
Metrics
H-Index
i10 Index
Citation Counts
26
54
3,334
Natural Language Processing
Parsing
Sentiment Analysis
Grammar Checking
Computational Linguistics
Rankings
Ranking Based On Selection: 12
Martin Crane
Metrics
H-Index
i10 Index
Citation Counts
24
47
4,034
Time Series Analysis
Computational Finance
Complex Systems
Bioinformatics
Rankings
Ranking Based On Selection: 13
Murat Yilmaz
Metrics
H-Index
i10 Index
Citation Counts
23
52
1,702
Empirical Software Engineering
Gamification
Software Process Improvement
Agile Software Development
Metaverse
Rankings
Ranking Based On Selection: 14
Rob Brennan
Metrics
H-Index
i10 Index
Citation Counts
21
61
1,923
AI and Data Governance
Data Value
Data Quality
Data Privacy
Knowledge Graphs
Rankings
Ranking Based On Selection: 15
Suzanne Little
Metrics
H-Index
i10 Index
Citation Counts
21
45
1,895
Rankings
Ranking Based On Selection: 16
Brian Davis
Metrics
H-Index
i10 Index
Citation Counts
20
39
1,795
Computational Linguistics
Natural Language Processing
Information Extraction
Rankings
Ranking Based On Selection: 17
Johannes Leveling
Metrics
H-Index
i10 Index
Citation Counts
19
50
2,808
Information Retrieval
Natural Language Processing
Machine Learning
Artificial Intelligence
Machine Translation
Rankings
Ranking Based On Selection: 18
Ciarán Ó Conaire
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,305
Rankings
Ranking Based On Selection: 19
Annalina Caputo
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,236
Information Retrieval
Natural Language Processing
Diachronic Analysis
Temporal Aware User Profiling
Rankings
Ranking Based On Selection: 20
Mark Roantree
Metrics
H-Index
i10 Index
Citation Counts
18
47
1,354
Machine Learning
Data & Feature Engineering
Data Integration
Rankings
Ranking Based On Selection: 21
Graham Healy
Metrics
H-Index
i10 Index
Citation Counts
18
34
1,761
brain-computer interfaces
machine learning
signal processing
Rankings
Ranking Based On Selection: 22
Joachim Wagner
Metrics
H-Index
i10 Index
Citation Counts
17
22
1,438
Rankings
Ranking Based On Selection: 23
Martin Collier
Metrics
H-Index
i10 Index
Citation Counts
16
36
1,522
Network Protocols
Internet of Things
Internet Privacy
Energy-Efficient Networks
Software-Defined Networking
Rankings
Ranking Based On Selection: 24
Francoise Blin
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,919
Computer Assisted Language Learning
Computer Supported Collaborative Language Learning
Activity Theory
Affordances
Rankings
Ranking Based On Selection: 25
Lamia Tounsi
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,146
Natural Language Processing
Statistical Parsing
Machine Learning
Morphologically Rich Languages
Data Analytics
Rankings
Ranking Based On Selection: 26
Lijuan Marissa Zhou
Metrics
H-Index
i10 Index
Citation Counts
13
19
1,173
Infromation Retrival
Natural Language Processing
Software Engineering
Human Computer Interaction
data analysis
Rankings
Ranking Based On Selection: 27
Eamonn Newman
Metrics
H-Index
i10 Index
Citation Counts
12
16
407
Rankings
Ranking Based On Selection: 28
Mingxue Wang
Metrics
H-Index
i10 Index
Citation Counts
11
13
467
Root Cause Analysis
AIOps
Business Process as a Service
Rankings
Ranking Based On Selection: 29
Adam Bermingham
Metrics
H-Index
i10 Index
Citation Counts
10
10
1,890
Sentiment Analysis
Machine Learning
Information Retrieval
Web Data Mining
Recommender Systems
Rankings
Ranking Based On Selection: 30
Charlie Daly
Metrics
H-Index
i10 Index
Citation Counts
10
11
765
Rankings
Ranking Based On Selection: 31
Damien Comiskey
Metrics
H-Index
i10 Index
Citation Counts
10
10
5,127
Data Science
Mathematical Modelling
Computer Simulation
Statistics
Rankings
Ranking Based On Selection: 32
François Destelle
Metrics
H-Index
i10 Index
Citation Counts
9
8
481
Rankings
Ranking Based On Selection: 33
Edmond Mitchell
Metrics
H-Index
i10 Index
Citation Counts
8
8
613
Rankings
Ranking Based On Selection: 34
Fábio Silva
Metrics
H-Index
i10 Index
Citation Counts
8
6
169
Rankings
Ranking Based On Selection: 35
Mark Hughes
Metrics
H-Index
i10 Index
Citation Counts
8
8
824
Rankings
Ranking Based On Selection: 36
Utsab Barman
Metrics
H-Index
i10 Index
Citation Counts
8
7
780
Machine Learning
Natural Language Processing
Data Science
Gen AI
Rankings
Ranking Based On Selection: 37
Jogile Kuklyte
Metrics
H-Index
i10 Index
Citation Counts
7
6
120
Machine learning
computer vision
signal processing
artificial intelligence
Rankings
Ranking Based On Selection: 38
Jim O' Donoghue
Metrics
H-Index
i10 Index
Citation Counts
6
5
75
Deep learning
machine learning
data mining
experiment databases
hyper-parameter optimisation
Rankings
Ranking Based On Selection: 39
John Mckenna
Metrics
H-Index
i10 Index
Citation Counts
6
6
127
Rankings
Ranking Based On Selection: 40
Owen Corrigan
Metrics
H-Index
i10 Index
Citation Counts
5
4
111
Rankings
Ranking Based On Selection: 41
Paul Ryan
Metrics
H-Index
i10 Index
Citation Counts
5
2
82
Rankings
Ranking Based On Selection: 42
Hamza Riaz
Metrics
H-Index
i10 Index
Citation Counts
4
3
119
Machine Learning
Recommender Systems
Computer Vision
Medical Imaging
Natural Language Processing
Rankings
Ranking Based On Selection: 43
Abhishek Mandal
Metrics
H-Index
i10 Index
Citation Counts
4
3
74
Computer Vision
Deep Learning
Multimodal Deep Learning
Rankings
Ranking Based On Selection: 44
Yasser Abdelaziz Dahou Djilali
Metrics
H-Index
i10 Index
Citation Counts
4
2
101
Machine learning
Deep learning
Visual Attention modelling
Rankings
Ranking Based On Selection: 45
Qishan Yang
Metrics
H-Index
i10 Index
Citation Counts
4
1
53
Deep Learning
Machine Learning
Big Data
Data Warehouse
Rankings
Ranking Based On Selection: 46
Akshai Ramesh
Metrics
H-Index
i10 Index
Citation Counts
4
1
38
Natural Language Processing
Neural Machine Translation
Deep Learning
Large Language Models
Rankings
Ranking Based On Selection: 47
Muhammad Bilal Alli
Metrics
H-Index
i10 Index
Citation Counts
4
0
30
Rankings
Ranking Based On Selection: 48
Sidra Aleem
Metrics
H-Index
i10 Index
Citation Counts
4
3
85
Computer Vision
Medical Image Analysis
Deep Learning
Machine Learning
Image Processing
Rankings
Ranking Based On Selection: 49
Mohammad Razib Mustafiz
Metrics
H-Index
i10 Index
Citation Counts
3
2
37
Machine Learning
Artificial Intelligence
Data Science
Rankings
Ranking Based On Selection: 50
Enric Moreu
Metrics
H-Index
i10 Index
Citation Counts
3
1
45
Rankings
Ranking Based On Selection: 51
Devanshu Anand
Metrics
H-Index
i10 Index
Citation Counts
3
1
30
Rankings
Ranking Based On Selection: 52
Sen Yan
Metrics
H-Index
i10 Index
Citation Counts
4
0
26
Rankings
Ranking Based On Selection: 53
Renaat Verbruggen
Metrics
H-Index
i10 Index
Citation Counts
3
1
98
Software Engineering
Data Protection
Privacy
Cyber Ethics
Rankings
Ranking Based On Selection: 54
Waqar Ahmad
Metrics
H-Index
i10 Index
Citation Counts
2
2
121
Machine Learning
Deep Learning
Computer Vision
Healthcare
Rankings
Ranking Based On Selection: 55
Elham Mohammadzadeh Mianji
Metrics
H-Index
i10 Index
Citation Counts
3
2
29
Rankings
Ranking Based On Selection: 56
Asma Slaimi
Metrics
H-Index
i10 Index
Citation Counts
2
1
37
Machine learning
Meta-learning
Time series
Data Integration
Rankings
Ranking Based On Selection: 57
Chinmaya Kaundanya
Metrics
H-Index
i10 Index
Citation Counts
2
1
25
Rankings
Ranking Based On Selection: 58
Xiao Liu
Metrics
H-Index
i10 Index
Citation Counts
2
0
6
Rankings
Ranking Based On Selection: 59
Michael Dever
Metrics
H-Index
i10 Index
Citation Counts
2
1
15
Program Transformation
Formal Methods
Parallelization
Concurrent Programming
Rankings
Ranking Based On Selection: 60
Luke Collins
Metrics
H-Index
i10 Index
Citation Counts
2
0
7
Rankings
Ranking Based On Selection: 61
Alan Cowap
Metrics
H-Index
i10 Index
Citation Counts
1
1
11
Rankings
Ranking Based On Selection: 62
John Garrigan
Metrics
H-Index
i10 Index
Citation Counts
1
0
1