The removal and recovery of fission products from nuclear waste streams are crucial for reducing radiotoxicity and ensuring sustainable nuclear energy. Supported liquid membranes (SLMs) offer an efficient and economical approach for selective separation. This study investigates the use of nanohydroxyapatite (nHAp)-activated carbon (AC) composite as a novel SLM support for extracting representative fission products such as Sr²⁺, Cs⁺, and rare earth elements from simulated high-level liquid waste. Characterization of the composite, membrane stability, transport kinetics, and selectivity studies were carried out. The nHAp-AC membrane exhibited high extraction efficiency, chemical stability, and reusability, making it a promising candidate for nuclear waste remediation.