| Ammar | Javed | NYU Langone Health | United States | Medicine and Dentistry | Pancreatic Surgery | worldtopscientists.com |
| Amirmohammad | Behzadi | KTH Royal Institute of Technology | Sweden | Energy | Smart Energy System Design/Control/Optimization | worldtopscientists.com |
| Amirhossein | Baghestani | Shahid Beheshti University | Iran | Engineering | Transportation | worldtopscientists.com |
| Amir Hossein | Poursaeed | University of Exeter | United Kingdom | Engineering | Electrical Engineering | worldtopscientists.com |
| Amir | Maharjan | University of Southern Queensland | Australia | Agricultural and Biological Sciences | Wildlife Conservation | worldtopscientists.com |
| Amina | Moro | Iowa State University | United States | Agricultural and Biological Sciences | Crop Production and Physiology | worldtopscientists.com |
| Amin | Darabnoush Tehrani | The University of Texas at Arlington | United States | Engineering | Civil Engineering / Buried Infrastructure Rehabilitation | worldtopscientists.com |
| Amgalan | Bor | National University of Mongolia | Mongolia | Materials Science | Powder technology | worldtopscientists.com |
| Amena | Darwish | University of Skovde | Sweden | Engineering | Applications of Laser Sensors for Precision Measurements | worldtopscientists.com |
| Amel | Hamdi | Instituto de la grasa | Spain | Agricultural and Biological Sciences | Nutraceuticals, Functional Foods, and Novel Foods | worldtopscientists.com |
| Ambar | Shaikh | University of York | United Kingdom | Chemistry | Mass Spectrometry | worldtopscientists.com |
| Amani Jackson | Uisso | Tanzania Forestry Research Institute | Tanzania | Other | Forest and natural resources sciences | worldtopscientists.com |
| Amanda | Femano | Air Force Institute of Technology Graduate School of Engineering and Management Department of Operational Sciences | United States | Business, Management and Accounting | Supply Chain Resilience | worldtopscientists.com |
| Amal | Balila | Samer Engineering Consultancy Group | Oman | Engineering | Bio-based Building Materials | worldtopscientists.com |
| Amaechi | Azi | Universiti Sains Malaysia | Nigeria | Environmental Science | Atmospheric Remote sensing | worldtopscientists.com |
| Aly Mousaad | Aly | Louisiana State University | United States | Engineering | Civil and Environmental and Mechanical Engineering | worldtopscientists.com |
| Álvaro | Figueira | FCUP - Universidade do Porto | Portugal | Computer Science | Artificial Intelligence | worldtopscientists.com |
| Alissa | Groenendijk | Princess Maxima Center for pediatric oncology | Netherlands | Medicine and Dentistry | Pediatric oncology | worldtopscientists.com |
| Alireza | Asle Zaeem | Nuclear science and technology research institute (NSTRI) | Iran | Physics and Astronomy | Fusion engineering | worldtopscientists.com |
| Alina | Basnet | SUNY Upstate Medical University | United States | Medicine and Dentistry | Oncology | worldtopscientists.com |