| Joseph | Arhavbarien | Rockedge Ventures (UK) Ltd | United Kingdom | worldtopscientists.com |
| Richard | Arias-Hernandez | The University of British Columbia | Canada | worldtopscientists.com |
| Neha | Arolkar | Vasantrao Naik Marathwada Krishi Vidyapeeth, Perbhani state- Maharashtra | India | worldtopscientists.com |
| Muhammad | Arshad | Nanosciences and Technology Department, National Centre for Physics, Quaid-i-Azam University Islamabad | Pakistan | worldtopscientists.com |
| Mahendra | Aryal | Trichandra Multiple campus, Tribhuvan University, Nepal | Nepal | worldtopscientists.com |
| Yashar | Aryanfar | Universidad Autónoma de Ciudad Juárez | Mexico | worldtopscientists.com |
| Makoto | Asashima | Teikyo University 、Advanved Comprehensive Research Organization | Japan | worldtopscientists.com |
| Evans | Asenso | University of Ghana, Department of Agricultural En | Ghana | worldtopscientists.com |
| Dessie Ezez | Asfaw | Arba Minch University | Ethiopia | worldtopscientists.com |
| Zeinab | Asgari | Isfahan University of Technology | Iran | worldtopscientists.com |
| Ilnaz | Ashayeri | Birmingham city university | United Kingdom | worldtopscientists.com |
| Muhammad | Asif | Government College University Faisalabad | Pakistan | worldtopscientists.com |
| Muhammad | Asif | Shenzhen University | China | worldtopscientists.com |
| MURAT | AŞIK | ISTANBUL MEDENIYET UNIVERSITY | Turkey | worldtopscientists.com |
| Alireza | Asle Zaeem | Nuclear science and technology research institute (NSTRI) | Iran | worldtopscientists.com |
| Francesco | Asnicar | Department CIBIO, University of Trento, Italy | Italy | worldtopscientists.com |
| Mohamed-Zakaria | Assani | University of Medicine and Pharmacy of Craiova | Romania | worldtopscientists.com |
| Ferhunde | Atay | Eskisehir Osmangazi University | Turkey | worldtopscientists.com |
| P.P.A. Wasantha | Athukorala | University of Peradeniya | Sri Lanka | worldtopscientists.com |
| Fatin | Atrooz | University of Houston | United States | worldtopscientists.com |