BACKGROUND AND AIMS In recent years, there has been a growing awareness of the need to protect human rights in psychiatry. Within the last years, considerable effort has been made to reduce restrictive measures in mental health settings. Reducing restrictive measures within mental health care has also moved increasingly into the focus of public debate. This study aims, for the first time in a Southeast Asian sample, to explore whether socio-demographic factors affect public attitudes toward restrictions on mentally ill people in Hanoi, Vietnam. METHODS A general population-based survey (self-report questionnaire) was carried out in 2013 in the greater Hanoi area. The survey sample ( N = 813) was recruited according to the latest published census (2009) and micro-census (2013) in Vietnam and Hanoi with regard to the socio-demographic factors gender, age, urbanity, household size and marital status. Multinomial logistic regressions for odds ratios with 95% confidence intervals were calculated to examine the influence of epidemiological variables, like gender and age, on the public attitude toward restrictions imposed on mentally ill people in Vietnam. RESULTS This study found, for the first time in a large Vietnamese sample, that gender and age were associated with public attitudes toward restrictions on mentally ill people. In detail, significantly fewer men endorsed compulsory admission to a hospital and abortion than Vietnamese women. In addition, endorsement of abortion was significantly higher in older people. CONCLUSION The results offer some insight into roles of women in the Vietnamese society and might reflect the traditional gender expectations in Vietnamese families. Moreover, the results emphasize the need for supporting female psychiatric patients and their families within their communities and in the Vietnamese society.