This work reported the corrosion protection efficiency of polyolefin coatings, reinforced with modified hybrid cerium oxide and zinc oxide (CeO2@ZnO) particles. The hybrid particles were modified with benzotriazole (corrosion inhibitor). The modified hybrid particles (CeO2@ZnO/BTA) were reinforced into polyolefin-based coatings. The structural and morphological analysis results were confirmed by employing various characterization techniques. Transmission electron microscopic (TEM) analysis confirmed the hexagonal morphology of zinc oxide particle and confirmed the formation of hybrid particles. Energy dispersive X-ray (EDX) analysis results further validated the successful synthesis of the modified hybrid particles. Fourier-transform infrared spectroscopy (FTIR) analysis demonstrated the chemical bonding and interaction of the synthesized particles and endorsed the synthesis due to emergence of unique peaks relevant to particles. X-ray photoelectron spectroscopy (XPS) provided the more in-depth analysis of synthesized particles. Thermal gravimetric analysis (TGA) demonstrated the thermal stability of the modified hybrid particles. UV-vis spectroscopic analysis confirmed the self-release of the corrosion inhibitor (BTA) at various pH values and established the fact that the release is pH and time dependent. Electrochemical Impedance spectroscopic analysis (EIS) represented that the coatings reinforced with modified hybrid particles provided better corrosion protection as compared to the reference blank polyolefin coatings, thus making them an attraction for oil and gas and marine applications.