Polymer-reinforced composites are replacing metal matrix composites in terms of lightweight-to-high strength ratio which are employed in many fields such as aerospace, railways, and sports. By combining glass, flax, and nano-zinc oxide, this research developed a novel hybrid polymer composite. Nano-zinc oxide in various wt.% (0, 0.1, 0.2, 0.3, 0.4, and 0.5) is incorporated into composite materials. Field emission scanning electron microscopy (FESEM) and mechanical testing were conducted on all the samples. The highest values of tensile strength, flexural strength, inter-laminar shear strength, and hardness were found to be 122.63, 195.53, 23.45 MPa, and 57.68. All these values were obtained at 0.3wt% of zinc oxide of hybrid polymer composites and the highest impact strength was found to be 260.39 J/m obtained at 0.25wt% of the zinc oxide of hybrid polymer composites.