| Ali | Kuhestani | Qom University of Technology | Iran | Computer Science | Communication | worldtopscientists.com |
| Ali | Sabir | Selcuk University | Turkey | Agricultural and Biological Sciences | Horticulture | 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 |
| Alexsandra Duarte de | Oliveira | Embrapa Cerrados | Brazil | Agricultural and Biological Sciences | Agrometeorologia/mudanças climáticas | |
| Alexis | Quintana Isasi Timmermans | University of Alicante | Spain | Physics and Astronomy | Astrophysics | worldtopscientists.com |
| Alexandrina | Nan | National Institute for R&D of Isotopic and Molecular Technologies, Cluj-Napoca | Romania | Materials Science | Polymer Science | worldtopscientists.com |
| Alexandre | Duarte | FCSH/UNL | Portugal | Social Sciences | Strategic Communication | worldtopscientists.com |
| Alexandr | Karpachev | Pushkov Institute of Terrestrial Magnetism | Russia | Physics and Astronomy | Physics Faculty | worldtopscientists.com |
| Alexander | Karimov | National Research Nuclear University MEPhI | Russia | Physics and Astronomy | Plasma Physics | worldtopscientists.com |
| Alexander | Kirichenko | Allegheny General Hospital | United States | Health Professions | Radiation Oncology | worldtopscientists.com |
| Alex | Mirugwe | Makerere University, School of Public Health | Uganda | Computer Science | Health Modelling | worldtopscientists.com |
| Albrecht | Classen | University of Arizona | United States | Arts and Humanities | German Studies | worldtopscientists.com |
| Albert | Babaev | Институт физики Дагестанского федерального исследовательского центра РАН | Russia | Physics and Astronomy | Вычислительная физика | |
| Alaa | Adam | Sohag University | Egypt | Materials Science | Thermolectric materials | worldtopscientists.com |
| Akife | DALDA ŞEKERCİ | Erciyes University | Turkey | Agricultural and Biological Sciences | ornamental plants, vegetables | worldtopscientists.com |
| Akhlaqur | Rahman | University of The Sunshine Coast | Australia | Computer Science | ICT, IIoT, Networking, Machine Learning, Automation | worldtopscientists.com |
| Akhilesh | Kumar | National Institute of Technology Jamshedpur | India | Engineering | Heat Transfer and Fluid Flow | worldtopscientists.com |
| Akbar | Cheshomi | University of Tehran | Iran | Earth and Planetary Sciences | Engineering Geology/Measurement of soil and rock engineering characteristics with the development of laboratory equipment | worldtopscientists.com |
| Akbar | Hojjati Najafabadi | Islamic Azad University Mobarakeh Branch | Iran | Engineering | university | worldtopscientists.com |