The study investigates the characteristics of bio-degradable waste banana and neem fiber-reinforced epoxy hybrid composites. The research focuses on the mechanical and moisture absorption properties of these composites, which are prepared with different blending ratios of banana (BF) and neem (NF) fibers. The influence of chemical treatments, specifically silane and alkali, on the tensile strength and moisture absorption of the composites is examined using ASTM standards. The results show that the silane-treated BF/NF (3:1) composite exhibits a density of 1.3±0.11 g/cc, a high tensile strength of 72.45±1.1 MPa, and improved moisture absorption resistance of 43.78%. The tensile strength of the silane-treated composite under dry conditions is 56.19±1.1 MPa. The study highlights the enhanced mechanical and environmental benefits of these composites, making them suitable for various applications such as automotive, aerospace, and structural uses.The study investigates the characteristics of bio-degradable waste banana and neem fiber-reinforced epoxy hybrid composites. The research focuses on the mechanical and moisture absorption properties of these composites, which are prepared with different blending ratios of banana (BF) and neem (NF) fibers. The influence of chemical treatments, specifically silane and alkali, on the tensile strength and moisture absorption of the composites is examined using ASTM standards. The results show that the silane-treated BF/NF (3:1) composite exhibits a density of 1.3±0.11 g/cc, a high tensile strength of 72.45±1.1 MPa, and improved moisture absorption resistance of 43.78%. The tensile strength of the silane-treated composite under dry conditions is 56.19±1.1 MPa. The study highlights the enhanced mechanical and environmental benefits of these composites, making them suitable for various applications such as automotive, aerospace, and structural uses.