Entomopathogenic fungi are a diverse group of microorganisms that infect and kill insects, playing a crucial role in natural pest regulation and sustainable agriculture. These fungi, including well-known genera such as Beauveria, Verticillium, Metarhizium, Nomuraea, Paecilomyces and Hirsutella invade their hosts through direct penetration of the insect cuticle, bypassing the need for ingestion. Once inside, they proliferate within the host body, producing toxins and consuming internal tissues, ultimately leading to the insect?s death. The life cycle of entomopathogenic fungi involves spore attachment, germination, host invasion, internal colonization, and external sporulation, allowing the fungi to spread to new hosts. Environmental factors such as temperature, humidity, and host availability significantly influence their effectiveness. Due to their specificity and eco-friendly nature, these fungi are widely used as biological control agents in integrated pest management (IPM) programs, reducing dependence on chemical pesticides.