The study goal was to describe attempted suicide triggers in Thai adolescents. A descriptive exploratory qualitative study approach was used utilizing in-depth interviews with twelve adolescents who had attempted suicide and six of their parents. Content analysis was conducted. Attempted suicide triggers were (1) severe verbal criticisms and expulsion to die by a significant family member, (2) disappointed and unwanted by boyfriend in first serious relationship, (3) unwanted pregnancy, and (4) mental illness leading to intense emotions and irresistible impulses. These attempted suicide triggers should be of concern and brought into suicide prevention management programs such as emotional management, effective communication for adolescents and family.