| Dr | Dinesh | Chaudhary | Tribhuvan University | Nepal | Physics and Astronomy | Materials Science | Best Researcher Award | bookofaward.com |
| Dr. | Dimitrios | Karapiperis | International Hellenic University | Greece | Computer Science | Probabilities Statistics | Best Research Award | bookofaward.com |
| Dr. | Dharmendra Kumar | Khatri | NIPER Hyderabad | India | Neuroscience | Parkinson's disease | Best Researcher Award | |
| Dr. | Dhanalakshmi | Karuppaiyan | Mookambigai College of Engineering, Keeranur | India | Physics and Astronomy | Ultrasonics, Spectroscopy, Molecular Docking, Density Functional Theory | Best Researcher Award | bookofaward.com |
| Assist. Prof. Dr. | Dhaarna | | CEPT University, Ahmedabad | India | Engineering | Urban and regional planning | | bookofaward.com |
| Mr. | Deyang | Chen | University of Chinese Academy of Sciences | China | Economics, Econometrics and Finance | Climate finance | Best Researcher Award | bookofaward.com |
| Prof. Dr. | Devki | Talwar | University of North Florida, Jacksonville, FL USA | United States | Materials Science | Best publication Award | Best Researcher Award | bookofaward.com |
| Mr. | Desmond | Vihywuseh | The University of Bamenda | Cameroon | Earth and Planetary Sciences | Geophysics | | bookofaward.com |
| Dr. | Delagnon | Assou | Laboratoty of Ecology and Ecotoxicology (LaEE), University of Lomé | Togo | Agricultural and Biological Sciences | Wildlife ecology and sustainable use of natural resources | | bookofaward.com |
| Dr. | Deepesh | Bansal | Indian Institute of Technology Delhi | India | Engineering | Civil (Geotechnical and Geoenvrionmental) Engineering | Excellence in Environmental Sustainability Research | bookofaward.com |
| Dr. | DEBAPRIYA | BANIK | ICFAI University, Tripura | India | Computer Science | Medical Image Processing | Best Researcher Award | bookofaward.com |
| Prof. Dr. | Davron | Juraev | Turon University | Uzbekistan | Mathematics | Partial Differentiel Equations | Best Researcher Award | bookofaward.com |
| Dr | David | Ikpo | CENTRE FOR HUMAN RIGHTS | South Africa | Other | human rights | Best Book Research Award | |
| Mr. | David | Macdonald | Retired | United Kingdom | Social Sciences | Sociology (Drug Dependency) | Best Researcher Award | bookofaward.com |
| Dr. | David | Musgrave | University of Newcastle | Australia | Arts and Humanities | Poetry | Best Researcher Award | bookofaward.com |
| Prof. | Daniela | Tarantino | University of Genoa, Department of Political and International Sciences | Italy | Social Sciences | Canon and Ecclesiastical Law, Comparative Law of Religions | Best Researcher Award | bookofaward.com |
| Assoc. Prof. Dr. | Danfeng | Zhang | Associate dean of School of Biomedical & Chemical Engineering at Liaoning Institue of Science and Technology | China | Chemistry | •Photocatalysis oxidation/reduction on environmental pollutants by functional materials./ Analysis and detection of organic pollutants and chemical colorants by MSPE-HPLC method. | Best Researcher Award | bookofaward.com |
| Assoc. Prof. Dr. | Danela | Murariu | Suceava Genebank | Romania | Agricultural and Biological Sciences | Genetics and plant breeding | Excellence in Research Award | bookofaward.com |
| Dr | Dan | Liu | General Hospital of Ningxia, Medical University | China | Medicine and Dentistry | Obstetrics and Gynecology, Fertility preservation | Best Researcher Award | bookofaward.com |
| Prof. | Dagang | Tian | Fujian academy of agriculture sciences | China | Agricultural and Biological Sciences | Plant breeding | Best Researcher Award | bookofaward.com |