Naval Materials Research Laboratory (NMRL) is an Indian defence laboratory of the Defence Research and Development Organisation (DRDO). Located at Ambernath, in Thane district, Maharashtra. It develops materials and alloys for Naval use, and is a single-window agency for all materials requirement of the Indian Navy. NMRL is organized under the Naval Research & Development Directorate of DRDO. The present director of NMRL is Shri R S Hastak.