Endophytic entomopathogenic fungi (EEPF) have emerged as promising biological control agents with dual functionality: suppressing insect pests while enhancing plant health and resilience. These fungi naturally colonize plant tissues and contribute to pest suppression through systemic infection and secondary metabolite production, offering a sustainable alternative to conventional chemical pesticides and further strengthening their role in integrated pest management (IPM) systems. Recent advancements in molecular biology, strain development, and precision delivery technologies have enhanced the efficacy, stability, and field applicability of EEPF. Furthermore, novel strains with improved virulence, broader host range, and environmental resilience are being explored to address limitations under variable agroecological conditions. Despite their potential, several challenges hinder the large-scale commercialization and field adoption of EEPF. A multidisciplinary approach, integrating genomics, metagenomics, ecological modeling, and risk assessment frameworks, is essential to overcome these barriers. With focused research, technological innovation, and supportive policy frameworks, EEPF can become a cornerstone of climate-resilient and environmentally sustainable agriculture.