World Health Organization (WHO) declared on March 11, 2020, coronavirus disease, which erupted in December 19th, 2019 in Wuhan, China (COVID-19) as worldwide pandemic disease. Researchers worldwide were successful to provide a prophylactic approach via developing several vaccines, which were swiftly approved by WHO under Emergency Use Listing (EUL) status. So far, lopinavir, chloroquine, azithromycin, hydroxychloroquine, favipiravir, umifenovir, ribavirin, remdesivir, and darunavir have been tested clinically. Hydroxychloroquine, favipiravir, and chloroquine exhibited a high ratio of distribution for the lung and were reported to minimize viral tonnage in respiratory system of many COVID-19 cases. However, none of the tested drugs showed a conclusive, safe, and efficient activity against COVID-19. This prompted many experts in drug discovery to fetch in the treasure of many available old drugs of natural origin to repurpose based upon their well-studied pharmacology, pharmacodynamics, virtual screening, and artificial intelligence studies. In this review chapter, we will address the repurposing of natural products and their derivatives to be used in treatment of COVID-19 via targeting host cells machinery and viral proteins either in early stages by blocking virus entry to cells or lately through inhibition of viral replication.