Background:Increase in the prevalence of active cigarette smoking has led to a considerable impact on the health of the passive smokers worldwide. The consequences of passive smoking on respiratory and cardiovascular systems are quite clear. However, the consequences of passive smoking on the central nervous system in young women are unclear. Therefore, this study was conducted to determinethe effect of passive smoking on cognition in women who belonged to a young age group. Aims and Objectives:To assesscognitive performance among a) young women exposed to passive smoking and b) young women not exposed to passive smoking. To compare cognitive performance scores between the two groups. Materials and Methods: The study was conducted among 100female passive smokers (study group) and 100 females who were not exposed to cigarette smoke (control group). Both groups were of age group 18-25 years and were selected depending on the inclusion and exclusion criteria. All the participants of this studyfilled a self-reported questionnaire regarding exposure to cigarette smoke and their personal history. Various cognitive functions were assessed in both groupsThe test scores werenoted, andstatistical analysis was performed. Results: Psychomotor speed was significantly reduced in the study group with the p value<0.001. Passive smokers also had a significant reduction in sustained attention significantly with p value<0.001 when compared with the control group.No significant changes were found between both groups in relation to executive function. Conclusion:Passive smoking leads to cognitive impairment in young women, which may result in early occurrence ofdementia in the future. A strict ban on the active smoking of cigarettes in indoor places must be imposed to avoid the neurotoxic effects of passive smoking.