Ever married women are more vulnerable group to sexually transmitted diseases (STDs), HIV/AIDS infection, and unplanned pregnancies. The aims of this study are to assess the level of awareness among ever married women on HIV/AIDS and to determine the affecting factors influenced knowledge and awareness about HIV/AIDS regarding its prevention and control. The data on 10,996 ever married women in their reproductive span (15-49 years) was taken from the Bangladesh Demographic and Health Survey (BDHS), 2007. The statistical tools, Chi square (χ2) test and binary logistic regression analysis have been performed to analyse the data. Both bivariate and multivariate analyses identified that respondent’s education, husband’s education, husband’s occupation, age at marriage, watching TV, electricity in the household, marital status, and residence are found to have statistically significant effects with HIV/AIDS awareness (p<0.01). Marriage in the older age (>18 years), education, and mass media campaigns are strongly suggested for increasing knowledge and awareness to be controlled the spread of HIV/AIDS as well as STDs among ever married women in Bangladesh.