We aimed to examine the association between nonadherence to antihypertensive medications and Health-related quality of life. A cross-sectional survey was undertaken. This study was conducted using the data from the Korea National Health and Nutrition Examination Survey. A total of 6493 participants who diagnosed with hypertension, affected by hypertension at the time of survey, and took daily antihypertensive medications or never took this medication were included. Multiple logistic regression analysis was performed to determine the factors that influenced the patients& #39; nonadherence to antihypertensive medications according to sex. Our results showed that anxiety/depression was positively associated with antihypertensive medication nonadherence, regardless of sex. According to sex, mobility was negatively associated with antihypertensive medication nonadherence in women. In men, living together was negatively related to antihypertensive medication nonadherence. This study showed the factors associated with antihypertensive medication nonadherence according to sex. HRQoL was associated with antihypertensive medication nonadherence.