Emotional regulation is a process of directing and expressing emotions which impacts on various aspects, such as affect, social, cognitive, physical, and psychological. Less adaptive emotion regulation leads to the increase of psychopathological symptoms. During adolescence, individuals experience various developments, changes, and demands. Adolescents' emotions are less stable and their parents still hold important roles in adolescents' lives. This study aims to understand how adolescents with authoritarian parenting style regulate their own emotions. This qualitative research used interviews for primary data collection and was assisted with parenting styles questionnaire which is used to ascertain their parenting styles. The subjects of this research were three adolescents who experience authoritarian parenting styles from both parents. All subjects felt under pressure from high demand, while parental responsiveness is low. The study found that all subjects used every emotional regulation strategy, including situation selection, situation modification, attentional deployment, cognitive changes, and response modification. However, their emotional regulation was shown to be relatively less adaptive. This is due to the use of emotion regulation strategies such as suppression, rumination, self-blame, and blame on others.