Entomopathogenic fungi (EPF) have emerged as a major biopesticide in the framework of sustainable pest management, providing an eco-friendly alternative to synthetic pesticides. These fungi, naturally found in diverse ecosystems, parasitize and kill insect hosts through direct penetration of the cuticle, followed by internal propagation and host death. Their host specificity, minimal non-target effects, and compatibility with integrated pest management (IPM) approaches support EPF as highly suitable for current farming systems. This chapter provides recent updates in the application of EPF as biocontrol agents, highlighting encapsulated formulations, precision delivery, and integration into IPM systems suitable for agroecological crop protection. It also explores the ecological roles of EPF and addresses field-level challenges to enhance their efficacy and sustainability. Advancements in mass multiplication, formulation, and application methods have helped the development of commercial biopesticides, but challenges such as environmental sensitivity, unpredictable field performance, and short shelf life limit their widespread adoption. Recent innovations in the formulation industry, molecular biology, and delivery systems, including nanoscience and drone-based spraying, are expanding the practical application of EPF in field conditions. Furthermore, their potential roles beyond pest suppression include endophytic and rhizospheric colonization, plant growth promotion, and soil health improvement. This chapter also addresses environmental, biosafety, and regulatory considerations that influence EPF deployment. Addressing through case studies and field applications, this chapter highlights the practical relevance and emerging research directions intended at optimizing EPF-based biopesticides. Overall, EPF is a promising frontier in the development of biological pest management approaches aligned with global SDGs toward zero hunger, ecological strengthening, and sustainable production.