World

Top 100 Scientists

World Top 100 Scientists 2026

The Top 100 scientists are ranked based on total H-index scores at the global, regional, national, and institutional levels. Rankings cover 10 regions, 13 main fields, and 221 subfields. Subject field rankings (at world, region, country, and university levels) are currently in Beta version and updated in near real-time.
Note: Researchers classified as "others" (currently 1,122,060 profiles whose fields are undetermined or unedited) are excluded from subject and regional rankings. These rankings will dynamically evolve as the “others” profiles are reviewed and properly categorized.

Country

* Total H Index Rankings

Rankings

83,592

World Rank

1,100

Country Rank

University

Ranking Based On Selection:

Rahul Vaish

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Metallurgical & Materials Engineering
Materials Scienc

H-Index Metrics

H-Index

51
i10 Index

270
Citation Counts

12,055

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

139,142

World Rank

2,372

Country Rank

University

Ranking Based On Selection:

Swapnil Sharma

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Computer Science
Computer Science | Astronomy | Deep Learnin

H-Index Metrics

H-Index

41
i10 Index

148
Citation Counts

7,412

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

139,350

World Rank

2,377

Country Rank

University

Ranking Based On Selection:

Mrityunjay Doddamani

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Mechanical Engineering
3D Printing | Composites | Cellular Materials | Syntactic Foam

H-Index Metrics

H-Index

41
i10 Index

87
Citation Counts

4,235

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

164,075

World Rank

3,042

Country Rank

University

Ranking Based On Selection:

Atul Dhar

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Energy Engineering
Renewable Fuels | Combustion | Emissions Contro

H-Index Metrics

H-Index

38
i10 Index

74
Citation Counts

5,842

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

178,811

World Rank

3,523

Country Rank

University

Ranking Based On Selection:

Prem Felix Siril

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Nanoscience and Nanotechnology
Nanomaterials | heterogeneous catalysis | high energetic materials | nanodrugs | porous framework solid

H-Index Metrics

H-Index

37
i10 Index

74
Citation Counts

3,895

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

187,074

World Rank

3,765

Country Rank

University

Ranking Based On Selection:

Syed Abbas

Indian Institute of Technology IIT Mandi Mandi, India

Natural Sciences / Mathematical Sciences
Differential Equations | General Mathematics | Time Scale Calculus | Ecological Modelling | Stochastic Contro

H-Index Metrics

H-Index

36
i10 Index

108
Citation Counts

3,886

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

203,571

World Rank

4,269

Country Rank

University

Ranking Based On Selection:

Ramesh Oruganti

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Electrical & Electronic Engineering
Power Electronics | Solar PV System

H-Index Metrics

H-Index

35
i10 Index

71
Citation Counts

5,727

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

205,113

World Rank

4,308

Country Rank

University

Ranking Based On Selection:

Ajay Kumar

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Electrical & Electronic Engineering
Plasmonic Photocatalysis | Organic Transformation | Nanomaterials for Environmental Remediatio

H-Index Metrics

H-Index

34
i10 Index

41
Citation Counts

4,555

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

210,637

World Rank

4,521

Country Rank

University

Ranking Based On Selection:

Viswanath Balakrishnan

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Nanoscience and Nanotechnology
Nanomanufacturing | 2D Materials and Devices | Supercapacitors | Nanomechanics | Phase Transitio

H-Index Metrics

H-Index

34
i10 Index

70
Citation Counts

3,981

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

217,554

World Rank

4,697

Country Rank

University

Ranking Based On Selection:

Ashish Kumar

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Nanoscience and Nanotechnology
Heterogeneous catalysis | Photocatalysis | Nanomaterials | Energy and environmental application

H-Index Metrics

H-Index

33
i10 Index

40
Citation Counts

4,451

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

244,361

World Rank

5,572

Country Rank

University

Ranking Based On Selection:

Rajanish Giri

Indian Institute of Technology IIT Mandi Mandi, India

Natural Sciences / Molecular Biology & Genetics
Molecular Virology | Intrinsically Disordered Proteins | Amyloids | Drug Discovery | Zika Viru

H-Index Metrics

H-Index

31
i10 Index

78
Citation Counts

3,145

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

247,609

World Rank

5,711

Country Rank

University

Ranking Based On Selection:

Aditi Halder

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Nanoscience and Nanotechnology
Nanocatalysis | Energy Materials | Fuel Cells | zinc air batter

H-Index Metrics

H-Index

31
i10 Index

66
Citation Counts

3,317

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

263,113

World Rank

6,200

Country Rank

University

Ranking Based On Selection:

Chayan Nandi

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Nanoscience and Nanotechnology
Nanomaterials | Spectroscopy | Microscopy | Super Resolution Imagin

H-Index Metrics

H-Index

30
i10 Index

59
Citation Counts

2,859

Get Full Access to Premium Data

* Total H Index Rankings

Rankings

264,688

World Rank

6,272

Country Rank

University

Ranking Based On Selection:

Satvasheel Powar

Indian Institute of Technology IIT Mandi Mandi, India

Engineering & Technology / Industrial & Manufacturing Engineering
Energy | Industrial Engineering | Perovskite Solar cells | Multi-Criteria Decision-Making | Life Cycle Assessmen