| Amaechi | Azi | Universiti Sains Malaysia | Nigeria | Environmental Science | Atmospheric Remote sensing | worldtopscientists.com |
| Amal | Balila | Samer Engineering Consultancy Group | Oman | Engineering | Bio-based Building Materials | 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 |
| Amani Jackson | Uisso | Tanzania Forestry Research Institute | Tanzania | Other | Forest and natural resources sciences | worldtopscientists.com |
| Ambar | Shaikh | University of York | United Kingdom | Chemistry | Mass Spectrometry | worldtopscientists.com |
| Amena | Darwish | University of Skovde | Sweden | Engineering | Applications of Laser Sensors for Precision Measurements | worldtopscientists.com |
| Amgalan | Bor | National University of Mongolia | Mongolia | Materials Science | Powder technology | worldtopscientists.com |
| Amin | Darabnoush Tehrani | The University of Texas at Arlington | United States | Engineering | Civil Engineering / Buried Infrastructure Rehabilitation | worldtopscientists.com |
| Amina | Moro | Iowa State University | United States | Agricultural and Biological Sciences | Crop Production and Physiology | worldtopscientists.com |
| Amir | Maharjan | University of Southern Queensland | Australia | Agricultural and Biological Sciences | Wildlife Conservation | worldtopscientists.com |
| Amirhossein | Baghestani | Shahid Beheshti University | Iran | Engineering | Transportation | worldtopscientists.com |
| Amirmohammad | Behzadi | KTH Royal Institute of Technology | Sweden | Energy | Smart Energy System Design/Control/Optimization | worldtopscientists.com |
| Ammar | Chouchane | University centre of Barika | Algeria | Engineering | Pattern recognition | worldtopscientists.com |
| Ammar | Javed | NYU Langone Health | United States | Medicine and Dentistry | Pancreatic Surgery | worldtopscientists.com |
| ANA | DE ANDRÉS-MARTÍN | Hospital Universitario Ramón y Cajal | Spain | Health Professions | Inmunología | worldtopscientists.com |
| Ana Lúcia | Pires | University of Porto - FCUP | Portugal | Physics and Astronomy | Quantum Technologies | worldtopscientists.com |
| Anahit | Sargsyan | IGIC Armenia | Armenia | Chemistry | material | worldtopscientists.com |
| Ananya | Kuri | Siemens AG | Germany | Engineering | Power System and Power Electronics | worldtopscientists.com |
| Andleeb | Masood | Southwest Jiaotong University | China | Physics and Astronomy | Medical Physics/ remote sensing | worldtopscientists.com |
| André | Stein | Universidade Federal de Mato Grosso (UFMT) | Brazil | Chemistry | Síntese Orgânica | worldtopscientists.com |