East Asian countries are known to take a more permissive attitude towards suicide. However, the nuanced beliefs fostering these attitudes remain unexplored. This study aimed to examine socio-demographic and clinical factors associated with the three normative beliefs on suicide in Taiwan – suicide as human rights, suicide as an individual choice, and that suicide is irrational – and the association of these beliefs with supportive attitudes towards governmental suicide prevention measures. A nationally representative survey, based on calls to landlines and mobile phones, was conducted in 2020 with a sample size of 1,087. Logistic regression analyses were employed to examine the associations between socio-demographic variables, mental health status, normative suicide beliefs, and attitudes towards suicide prevention. We found that the prevalence rates for the three normative beliefs were 55.3% for human rights, 26.7% for individual choice, and 73.7% for irrationality, respectively. Human rights belief was more prevalent among younger, unmarried, and highly educated individuals. Individual choice belief was more common among the younger, those in the ‘other’ marital group, less educated individuals, and those without mental conditions. The irrationality belief was more likely to be endorsed by the unemployed group. Regardless of participants’ normative suicide beliefs, a significant majority (89.0%) supported governmental investment in suicide prevention. However, human rights and individual choice beliefs were associated with diminished support for governmental suicide prevention measures (aOR = 0.6, p = 0.003, and aOR = 0.6, p = 0.005, respectively). Taiwanese society overwhelmingly supports governmental suicide prevention measures, suggesting a leaning towards hard paternalism. However, those who believed that suicide is a human right and individual choice were less likely to support governmental suicide prevention efforts. Our findings suggest that health education addressing these two normative beliefs, particularly among the youth and unmarried individuals, could be potential strategies in future suicide prevention measures.