Biological pest control is a sustainable and environmentally friendly method of controlling pest populations in agricultural ecosystems. This method involves the use of natural enemies of pests, such as predators, parasitoids, and pathogens, to reduce pest infestations effectively. It is an integral part of Integrated Pest Management (IPM) programs, reducing the reliance on chemical pesticides while promoting environmental health and biodiversity. Biological control agents are divided into three main categories: predators, such as ladybird beetles and lacewings; parasitoids, like Trichogramma species; and microbial agents, including Bacillus thuringiensis, fungi, and viruses. These are chosen based on their specificity towards the target pest, ability to establish in the environment, and effectiveness under diverse climatic conditions. The application methods of biological pest control include conservation of natural enemies, augmentation through mass release, and classical biological control by introducing exotic natural enemies into new ecosystems. Its advantages include long-term pest suppression, reduced environmental contamination, and enhanced soil and plant health. However, the effectiveness of this method may be dependent on environmental factors, compatibility with other pest control strategies, and the potential risks of non-target effects. Advanced tools such as molecular techniques and remote sensing are now being employed to monitor and enhance the efficacy of biological control agents. Adoption of biological pest control is a necessity for sustainable agriculture, particularly in addressing pesticide resistance, residue accumulation, and biodiversity loss. With increasing awareness and advances in biotechnological tools, biological control offers a promising solution for achieving balance in agricultural ecosystems while ensuring food security and environmental conservation. Continued research and collaboration among scientists, farmers, and policymakers are vital to optimize its implementation and realize its full potential.