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 rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (1,121,296 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 2
Giuseppe Mascolo
organic pollutants degradation
advanced oxidation processes
water and wastewater treatmen
Metrics
 
H-Index
i10 Index
Citation
52
126
8,590
* Rankings
Ranking Based On Selection: 3
Stefano Polesello
Environmental Chemistry
Emerging Pollutant
Metrics
 
H-Index
i10 Index
Citation
48
95
6,052
* Rankings
Ranking Based On Selection: 4
Stefano Mammola
Ecology
Conservation biology
Subterranean Biology
Arachnolog
Metrics
 
H-Index
i10 Index
Citation
45
114
7,187
* Rankings
Ranking Based On Selection: 5
Federico Aulenta
Bioremediation
Electro-bioremediation
Bioelectrochemical systems
Bioprocess engineerin
Metrics
 
H-Index
i10 Index
Citation
45
93
8,231
* Rankings
Ranking Based On Selection: 6
Michela Rogora
environmental science
limnology
biogeochemistry
climate chang
Metrics
 
H-Index
i10 Index
Citation
44
95
8,222
* Rankings
Ranking Based On Selection: 8
andrea buffagni
River ecology
hydrobiology
habitat
Ephemeroptera
WF
Metrics
 
H-Index
i10 Index
Citation
41
68
4,997
* Rankings
Ranking Based On Selection: 11
Gianni Tartari
Environmental chemistry
Applied limnology
High altitude areas
Analytical chemistry
Climat
Metrics
 
H-Index
i10 Index
Citation
39
85
5,497
* Rankings
Ranking Based On Selection: 13
Stefano Amalfitano
microbial ecology
water science
flow cytometry
water qualit
Metrics
 
H-Index
i10 Index
Citation
38
69
4,501
* Rankings
Ranking Based On Selection: 14
Paola Grenni
Microbial Ecology
pesticides and PCBs
pharmaceuticals (including antibiotics)
anionic surfactant
Metrics
 
H-Index
i10 Index
Citation
37
76
5,955
* Rankings
Ranking Based On Selection: 16
anna maria de girolamo
hydrology
water quality
water resources management
modelling
ecohydrolog
Metrics
 
H-Index
i10 Index
Citation
36
56
4,172
* Rankings
Ranking Based On Selection: 17
Carlo Pastore
Biomass and waste characterisation and valorisatio
Metrics
 
H-Index
i10 Index
Citation
35
64
3,890
* Rankings
Ranking Based On Selection: 19
Nicola Cardellicchio
Environmental Chemistry
Ecotoxicology
Environmental Risk Assessmen
Metrics
 
H-Index
i10 Index
Citation
34
55
3,534
* Rankings
Ranking Based On Selection: 20
Maurizio Pettine
qualità delle acque e circolazione inquinant
Metrics
 
H-Index
i10 Index
Citation
33
47
3,737
* Rankings
Ranking Based On Selection: 22
Ermelinda Prato
Ecotoxicology
Aquaculture
Biodiversity
Benthos
Biochemistr
Metrics
 
H-Index
i10 Index
Citation
31
70
2,978
Rankings
Ranking Based On Selection: 1
Simona Rossetti
Metrics
 
H-Index
i10 Index
Citation Counts
56
161
9,857
Rankings
Ranking Based On Selection: 2
Giuseppe Mascolo
Metrics
 
H-Index
i10 Index
Citation Counts
52
126
8,590
organic pollutants degradation
advanced oxidation processes
water and wastewater treatmen
Rankings
Ranking Based On Selection: 3
Stefano Polesello
Metrics
 
H-Index
i10 Index
Citation Counts
48
95
6,052
Rankings
Ranking Based On Selection: 4
Stefano Mammola
Metrics
 
H-Index
i10 Index
Citation Counts
45
114
7,187
Ecology
Conservation biology
Subterranean Biology
Arachnolog
Rankings
Ranking Based On Selection: 5
Federico Aulenta
Metrics
 
H-Index
i10 Index
Citation Counts
45
93
8,231
Bioremediation
Electro-bioremediation
Bioelectrochemical systems
Bioprocess engineerin
Rankings
Ranking Based On Selection: 6
Michela Rogora
Metrics
 
H-Index
i10 Index
Citation Counts
44
95
8,222
Rankings
Ranking Based On Selection: 7
Marina Manca
Metrics
 
H-Index
i10 Index
Citation Counts
42
115
6,464
Rankings
Ranking Based On Selection: 8
andrea buffagni
Metrics
 
H-Index
i10 Index
Citation Counts
41
68
4,997
River ecology
hydrobiology
habitat
Ephemeroptera
WF
Rankings
Ranking Based On Selection: 9
Sara Valsecchi
Metrics
 
H-Index
i10 Index
Citation Counts
40
71
4,031
Rankings
Ranking Based On Selection: 10
Stefano Fazi
Metrics
 
H-Index
i10 Index
Citation Counts
39
69
5,145
Rankings
Ranking Based On Selection: 11
Gianni Tartari
Metrics
 
H-Index
i10 Index
Citation Counts
39
85
5,497
Environmental chemistry
Applied limnology
High altitude areas
Analytical chemistry
Climat
Rankings
Ranking Based On Selection: 12
Maria Concetta Tomei
Metrics
 
H-Index
i10 Index
Citation Counts
39
83
4,734
Rankings
Ranking Based On Selection: 13
Stefano Amalfitano
Metrics
 
H-Index
i10 Index
Citation Counts
38
69
4,501
microbial ecology
water science
flow cytometry
water qualit
Rankings
Ranking Based On Selection: 14
Paola Grenni
Metrics
 
H-Index
i10 Index
Citation Counts
37
76
5,955
Microbial Ecology
pesticides and PCBs
pharmaceuticals (including antibiotics)
anionic surfactant
Rankings
Ranking Based On Selection: 15
Franco Salerno
Metrics
 
H-Index
i10 Index
Citation Counts
37
73
5,132
Rankings
Ranking Based On Selection: 16
anna maria de girolamo
Metrics
 
H-Index
i10 Index
Citation Counts
36
56
4,172
hydrology
water quality
water resources management
modelling
ecohydrolog
Rankings
Ranking Based On Selection: 17
Carlo Pastore
Metrics
 
H-Index
i10 Index
Citation Counts
35
64
3,890
Biomass and waste characterisation and valorisatio
Rankings
Ranking Based On Selection: 18
Piero Guilizzoni
Metrics
 
H-Index
i10 Index
Citation Counts
35
75
3,846
Rankings
Ranking Based On Selection: 19
Nicola Cardellicchio
Metrics
 
H-Index
i10 Index
Citation Counts
34
55
3,534
Environmental Chemistry
Ecotoxicology
Environmental Risk Assessmen
Rankings
Ranking Based On Selection: 20
Maurizio Pettine
Metrics
 
H-Index
i10 Index
Citation Counts
33
47
3,737
qualità delle acque e circolazione inquinant
Rankings
Ranking Based On Selection: 21
claudio di iaconi
Metrics
 
H-Index
i10 Index
Citation Counts
31
59
3,486
Rankings
Ranking Based On Selection: 22
Ermelinda Prato
Metrics
 
H-Index
i10 Index
Citation Counts
31
70
2,978
Ecotoxicology
Aquaculture
Biodiversity
Benthos
Biochemistr
Rankings
Ranking Based On Selection: 23
Stefani Fabrizio
Metrics
 
H-Index
i10 Index
Citation Counts
31
55
3,416
Rankings
Ranking Based On Selection: 24
Giuseppe Laera
Metrics
 
H-Index
i10 Index
Citation Counts
31
40
2,855
Rankings
Ranking Based On Selection: 25
Caterina Levantesi
Metrics
 
H-Index
i10 Index
Citation Counts
30
42
2,985