The natural cycle of sand movement and deposition is interrupted on highly modified coastlines. In these often-urban sandy beach ecosystems, there is little or no natural dune system, and hard structures installed for shoreline stabilisation and protection tend to interrupt the natural longshore movement of sand, causing erosion of sandy beaches. Sand replenishment or nourishment as the mechanical movement of sand to areas of erosion, is becoming a more popular solution to combat against coastal erosion. Globally, there has been very little research on identifying the response of the smallest partition of invertebrate fauna (meiofauna) to sand replenishment, with no studies from Australia. Our study aimed to identify the response of meiofauna communities to the changing beach environment under various sand replenishment practices. We achieved this by conducting seasonal surveys, before, during, and after replenishment for meiofauna, beach morphology and environmental parameters. Temporal patterns explained variation in meiofauna community structure rather than disturbances due to beach replenishment, highlighting their resilience to change in these dynamic ecosystems. Results from this study will inform coastal managers of sand replenishment programs and the ecological response of sandy beaches, and how further insights into ecosystems can be gained via investigating lesser researched organisms.