| Maher Khaliel | Ahmed | DSV | Germany | Engineering | Telecomunication | worldtopscientists.com |
| Abu Talha Aqueel | Ahmed | Dongguk University | South Korea | Energy | Electrocatalysts (OER/HER) | worldtopscientists.com |
| Mohammad Amin | Ahmadzadeh | TUGA | Iran | Materials Science | nanocomposites | worldtopscientists.com |
| Mehrnaz | Ahmadi | , Ahvaz Jundishapur University of Medical Sciences | Iran | Nursing and Health Professions | Hematology (Thalassemia, Sickle cell), Oncology, Quality of Life, Instruments Psychometrics, Instruments Development, Supportive and Palliative care, Nursing education | |
| Sanaz | Ahmadi | ACECR | Iran | Immunology and Microbiology | TB, HTLV-1 | worldtopscientists.com |
| Riaz | Ahmad | Qilu Institute of Technology | China | Social Sciences | Social Sciences | worldtopscientists.com |
| Sajid | Ahmad | Dean faculty of Geosciences Punjab University Lahore | Pakistan | Environmental Science | Air pollution, Earth science | worldtopscientists.com |
| Shihab Uddin | Ahmad | University of Asia Pacific | Bangladesh | Pharmacology, Toxicology and Pharmaceutical Science | Phytomedicine | worldtopscientists.com |
| Sohag | Ahammed | Gazipur Agricultural University | Bangladesh | Other | Forestry, Biodiversity conservation, Disturbance ecology | worldtopscientists.com |
| Tanvir | Ahamed | New Jersey Institute of Technology | United States | Chemical Engineering | Environmental engineering | worldtopscientists.com |
| Francesco | Agnetti | Istituto Zooprofilattico Sperimentale Umbria e Marche "Togo Rosati" | Italy | Veterinary Science and Veterinary Medicine | Acquacoltura ed ittiopatologia | worldtopscientists.com |
| Vahid | Aghadadashi | Iranian National Institute for Oceanography and Atmospheric Sciences | Iran | Environmental Science | Marine and oceanic system-pollution | worldtopscientists.com |
| Mfor Ebot | Agbor-ambang | Soka University | Japan | Environmental Science | Green Technology/Biogas Technology/CFD Simulation | worldtopscientists.com |
| Oladele | Afolalu | Durban University of Technology | South Africa | Engineering | Electronic and Computer Engineering | worldtopscientists.com |
| Joe | Adserias-Garriga | Mercyhurst University | United States | Other | Forensic Anthropology and Odontology | worldtopscientists.com |
| Schiopu | Adriana-Gabriela | National University of Science and Technology POLITEHNICA Bucharest | Romania | Materials Science | Nanoparticles | worldtopscientists.com |
| Funmilola | Adewinle | Obafemi Awolowo University Teaching Hospital | Nigeria | Medicine and Dentistry | Orofacial Pain and Headache | worldtopscientists.com |
| Bartholomew Saanu | Adeleke | Olusegun Agagu University of Science and Technology, Okitipupa, Nigeria | Nigeria | Immunology and Microbiology | Microbial biotechnology/plant-microbe interactions | worldtopscientists.com |
| Afeez | Adedayo | Western Illinois University Alumni | United States | Agricultural and Biological Sciences | Phytopathology | worldtopscientists.com |
| Joseph | Adebayo | University of Ilorin, Nigeria | Nigeria | Biochemistry, Genetics and Molecular Biology | Biochemistry/Clinical Biochemistry | worldtopscientists.com |