| 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 | Salehan | University of Torbat Heydarieh | Iran | Computer Science | Optimization Algorithms | 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 |
| Alice | Di Donna | Université Grenoble Alpes | France | Engineering | Geotechnical engineering | worldtopscientists.com |
| Aliasghar | Shokri | Alzahra University | Iran | Physics and Astronomy | Solar cell | worldtopscientists.com |
| Ali | Taherifar | Yasouj university | Iran | Mathematics | Topology, algebra | worldtopscientists.com |
| Ali | Sadeghianjahromi | University of Warwick | United Kingdom | Engineering | Mechanical Engineering-thermal management | worldtopscientists.com |
| Ali | Sabir | Selcuk University | Turkey | Agricultural and Biological Sciences | Horticulture | worldtopscientists.com |
| Ali Reza | ALAEI | Southern Cross University | Australia | Computer Science | Artificial Intelligence/Natural language Processing/Tourism and hospitality | worldtopscientists.com |
| Ali | Kuhestani | Qom University of Technology | Iran | Computer Science | Communication | worldtopscientists.com |
| Alfredo | Dias | Universidade de Coimbra | Portugal | Engineering | Construção Sustentável | worldtopscientists.com |
| Alfons | Penzkofer | Universität Regensburg | Germany | Physics and Astronomy | Optical Spectroscopy | worldtopscientists.com |
| Alexis | Quintana Isasi Timmermans | University of Alicante | Spain | Physics and Astronomy | Astrophysics | worldtopscientists.com |
| Alexandr | Karpachev | Pushkov Institute of Terrestrial Magnetism | Russia | Physics and Astronomy | Physics Faculty | worldtopscientists.com |
| Alexandre | Duarte | FCSH/UNL | Portugal | Social Sciences | Strategic Communication | worldtopscientists.com |
| Александр | Полонский | Институт природно-технических систем | Russia | Earth and Planetary Sciences | Теория климата, океанография | worldtopscientists.com |