Present work describes a novel green chemistry synthesis of Nano – Hydroxyapatite (HAP) using Soya Milk (SM) as a Natural Stabiliser. The HAP is a biocompatible material and widely used in orthopaedic and dental applications. Nano-HAP powders are characterized using XRD, SEM, EDS and FTIR. These results show that the nano- HAP powders obtained by Green Chemistry Synthesis using Soya Milk (SM) as a Natural Stabiliser (NS) appear to be quite promising due to optimized pH and Ca/P ratio values that can be adapted for future research and development.