<p>Aluminium matrix composites are widely studied due to their enhanced properties. This has caused these composite materials to receive increased interest. The use of sustainable reinforcements has been proposed as a means of producing low-cost and environmentally friendly materials capable of improving the resulting properties of the composites and by extension increasing their potential areas of application. This study was conducted to evaluate the influence of rice husk on the corrosion properties of aluminium using potentiodynamic polarization and gravimetric methods. The corrosion media selected for the study were NaCl and H₂SO₄. From the results of the study, the open circuit potentials of the rice husk-reinforced aluminium samples in the NaCl and H₂SO₄ media were more positive than the unreinforced sample. This was attributed to the proclivity of the rice husk particles to resist the tendency of the aluminium to corrode in NaCl and H₂SO₄. The potentiodynamic polarization results showed in the NaCl medium, the corrosion rate decreased from 2.95 × 10⁻⁵ to 4.39 × 10⁻⁶&#xa0;g/h, while in the H₂SO₄ medium, the corrosion rate decreased from 3.28 × 10⁻³ to 6.69 × 10⁻⁴&#xa0;g/h. The improved corrosion resistance of the composites was attributed to the formation of a physical protective barrier of the rice husk reinforcements in the aluminium matrix. The chemical inertness of the rice husk was also highlighted as a reason for the decreased corrosion rate of the composites.</p>