Recent encroachment of urbanisation leads to the transformation of different simple ecological setups, e.g. forest, rural, coastal, and riverine zones, to complex systems like towns, cities, mostly consisting of built environments with high human density. In urban setups by prioritising human needs, the natural carrying capacity of that area gets exhausted, leading to the decline in biodiversity and a hike in the level of pollution. Urban resilience, on the other hand, paves the way for returning to ecological harmony following the perturbation caused by environmental alterations due to urban sprawling. However, specific segments of ecosystems, e.g., wetlands, representing the interface between terrestrial and aquatic habitats, facilitate the development of urban resilience and serve as conservation hubs for biodiversity. Interestingly, throughout different stages of their life cycle, fireflies (Coleoptera: Lampyridae: Luciolinae), the bioluminescent entomofauna with an aesthetic appeal, are intricately associated with the hydrologic environments prevailing in wetlands surrounding the urban habitats, for securing vital resources like shelter and nutrition. In the present chapter, the scope of utilisation of fireflies as bioindicators of deteriorating environmental conditions caused by urbanisation has been highlighted. Moreover, firefly-based ecotourism approaches centring wetlands near the urban localities not only favour the urban economy but also, by promoting urban resilience, safeguard the fireflies, their habitats and associated biotic organisms.