| Assoc Prof Dr | Lekan | Popoola | Afe Babalola University | others | Nigeria | Best Researcher Award | |
| Prof. | Leisheng | Zhang | The Fourth People's Hospital of Jinan (The Fourth People's Hospital of Jinan (Shandong Second Medical University) | Immunology of Infections | China | Best Researcher Award | pencis.com |
| Dr | Leili | Abkar | University of British Columbia | Infectious Diseases Prevention, Control and Cure | Canada | Best Researcher Award | |
| Dr | Leila | Farahmand | Motamed Cancer Institute | Vaccines and Vaccination | Iran | Women Researcher Award | |
| Assist. Prof. Dr. | Leila | Abbasi | Shiraz University of Medical Sciences, Shiraz, Iran | Causes and Symptoms of Infectious Diseases | Iran | Best Researcher Award | pencis.com |
| Assoc Prof Dr | Legesse Lemecha | Obsu | Adama Science and Technology University | Infectious Diseases Prevention, Control and Cure | Ethiopia | Best Researcher Award | |
| Dr | Lebea | Nthunya | University of the Witwatersrand | Antimicrobial, Antibiotic, Antibacterial Resistance | South Africa | Best Researcher Award | |
| Dr | Laura | Moreno Galarraga | CHN Pediatria | Diagnosis of Infectious Diseases | Spain | Best Research Award | |
| Dr. | Lateef | Busari | Osun State University | Malaria | Nigeria | Best Researcher Award | pencis.com |
| Mr. | Lata Deso | Abo | Haramaya University, Haramaya Institute of Technology | Development of New Vaccines | Ethiopia | Best Researcher Award | pencis.com |
| Prof. | Lang | Bu | China/Sun Yat-sen University/the First Affiliated Hospital | Immunology of Infections | China | Best Researcher Award | pencis.com |
| Prof. Dr. | Lajos | SZENTE | CycloLab Ltd. | Infectious Diseases Prevention, Control and Cure | Hungary | Best Research Award | |
| Assoc Prof Dr | Kraichat | Tantrakarnapa | Mahidol University | others | Thailand | Best Faculty Award | |
| Assist. Prof. Dr. | Kouichi | Asahi | Dokkyo Medical Univiersity Saitama Medical Center | Fungal Infections and Challenges in Treatment | Japan | Excellence in Innovation | pencis.com |
| Prof | Kosta | Mumcuoglu | The Hebrew University-Hadassah Medical School | Animal Infectious Diseases, Zoonosis | Israel | Best Researcher Award | |
| Dr | Konstantinos | Economopoulos | Duke University Medical Center | Infectious Diseases Prevention, Control and Cure | United States | Best Researcher Award | |
| Prof | Klimova | Elena | State Institution “Zaycev V.T. Institute of General and Urgent Surgery of National Academy of Medical Sciences of Ukraine” | Immunology of Infections | Ukraine | Best Researcher Award | |
| Assist Prof Dr | Kittisak | Jantanasakulwong | CMU | Antimicrobial, Antibiotic, Antibacterial Resistance | Thailand | Best Research Award | |
| Assist Prof Dr | Khadijeh | Ahmadi | hormozgan university of medical sciences | Vaccines and Vaccination | Iran | Best Researcher Award | |
| Prof | Ketema | Bacha | Jimma University | Antimicrobial, Antibiotic, Antibacterial Resistance | Ethiopia | Best Research Award | |