| Hari | B Sharma | Sikkim Manipal Institute of Technology | India | Engineering | Environmental Engineering | worldtopscientists.com |
| Ahmed | Azzam | Helwan University | Egypt | Chemistry | Analytical Chemistry | worldtopscientists.com |
| Ahmed | Azzam | Helwan University | Egypt | Chemistry | Analytical chemistry | worldtopscientists.com |
| Abir | Azri | Higher Institute of Biotechnology, University of Monastir, Tunisia | Tunisia | Biochemistry, Genetics and Molecular Biology | Association study between human SNPs and the severity of COVID-19 | worldtopscientists.com |
| Ngwa | Azibo | Bamenda University Institutes of Science and Technology | Cameroon | Environmental Science | Natural Resources Management | worldtopscientists.com |
| Amaechi | Azi | Universiti Sains Malaysia | Nigeria | Environmental Science | Atmospheric Remote sensing | worldtopscientists.com |
| Carlos | Azevedo | Instituto Pedro Nunes | Portugal | Engineering | Robotics | worldtopscientists.com |
| Mohammad | Azadfallah | University of Tehran | Iran | Materials Science | Bio-based Susstainable Materials | worldtopscientists.com |
| Anali | Azabdaftari | Western Sydney University | Australia | Other | Remote Sensing | worldtopscientists.com |
| fatemeh | Ayoobi | Occupational Safety and Health Research Center, NICICO, World Safety Organization and Rafsanjan University of Medical Sciences, Rafsanjan, Iran | Iran | Neuroscience | The role of agricultural toxins on the brain/Iran | worldtopscientists.com |
| Oluwatobi Adedamola | Ayilara-Adewale | Osun State University, Osogbo, | Nigeria | Computer Science | Artificial Intelligenc | worldtopscientists.com |
| Modupe Stella | Ayilara | North-West University | South Africa | Agricultural and Biological Sciences | Microbial Biotechnology | worldtopscientists.com |
| Sibel | Aydın | Hacettepe University | Turkey | Social Sciences | Social Work | worldtopscientists.com |
| Bita | Ayati | Tarbiat Modares University | Iran | Engineering | Water & Wastewater Treatment | worldtopscientists.com |
| Mathew Awine | Ayamdoo | Accra College of Education | Ghana | Arts and Humanities | Legal History, African History | worldtopscientists.com |
| Prashant | Awasthi | Accenture LLP | United States | Computer Science | Artifical Intelligence and Machine learning | worldtopscientists.com |
| SITI RAHMAH | AWANG | Universiti Teknologi Malaysia | Malaysia | Business, Management and Accounting | Managment/ Organizational Behaviour/ HRM | worldtopscientists.com |
| sana | awan | university of lahore | Pakistan | Biochemistry, Genetics and Molecular Biology | Cell and molecular biology | worldtopscientists.com |
| mohamed | attia | Ain Shams University | Egypt | Chemistry | biosensors for early diagnosis of cancer diseases | worldtopscientists.com |
| Fatin | Atrooz | University of Houston | United States | Neuroscience | Behavioral neuroscience | worldtopscientists.com |