Foam has been proposed as a mobility control agent in gas-based enhanced oil recovery. However, surfactant-based foam stability deteriorates at higher temperature. Currently, nanoparticles have been widely tested in foamability and foam stability. Hence, this paper is aimed to investigate the stability of nanoparticles-foam at different temperatures using 5,000 ppm anionic alpha olefin sulfonate surfactant in 3.0 wt sodium chloride, and 1.0 wt of sodium hydroxide to control the system pH. Silicon dioxide and aluminium oxide nanoparticles were used to examine the effect of nanoparticles in stabilizing foam. Foam stability was measured based on foam half-life in static condition. The performance of the nanoparticles were analysed at 25°C, 40°C, 60°C and 90°C. It was found that aluminium oxide nanoparticles enhanced foam better compared to silicon dioxide nanoparticles. These results were supported with the microscopic observation of foam structure and lamellae inside the glass tube. These findings contributed to the understanding of the effects of nanoparticles in enhancing foam stability. © IEOM Society International.