The increasing generation of organic waste due to rapid urbanization and population growth has emerged as a major environmental challenge worldwide, necessitating the development of sustainable and economically viable waste management strategies. Among various biological approaches, the Black Soldier Fly (Hermetia illucens Linnaeus, 1758) has gained global recognition as an efficient bioconversion agent capable of transforming organic waste into valuable biological resources. This review critically examines the ecological significance, waste conversion efficiency, environmental benefits, and emerging applications of H. illucens, with particular emphasis on its potential role as a bioindicator of organic waste accumulation in Central India. Available studies indicate that Black Soldier Fly larvae (BSFL) can efficiently process a wide range of organic substrates, including household food waste, fruit residues, agricultural by-products, and livestock manure, resulting in waste reduction rates ranging from 50–80%. Simultaneously, BSFL generate high-value products such as protein-rich biomass, lipid-rich feedstock, and nutrient-rich frass, thereby supporting the principles of circular bioeconomy and waste-to-wealth systems. In addition, BSFL-based waste treatment systems have been reported to reduce landfill dependency, nutrient loss, and greenhouse gas emissions compared to conventional waste disposal practices. Recent research has primarily focused on the utilization of BSFL for sustainable animal feed production, aquaculture, poultry nutrition, biodiesel generation, and organic fertilizer development. However, despite extensive investigations into its waste valorization potential, the ecological significance of H. illucens as a biological indicator of organic waste accumulation remains largely unexplored. The natural colonization of household organic waste by BSF populations observed in Central India suggests a strong ecological association between species abundance and organic waste availability, highlighting its potential application as a cost-effective bioindicator for monitoring waste accumulation, decomposition dynamics, and urban ecosystem health.