Alcohol use ranks as one of the most prevalent health-risk behaviors among Taiwanese adolescents. Possible selves--personalized future-oriented cognitions about the self--are significant motivators of one's actions, which may potentially influence adolescent drinking behavior. This study aimed to estimate the content domain-specific possible selves and their associations with drinking behaviors among Taiwanese adolescents. A total of 225 Taiwanese seventh and eighth graders from a public junior high school were recruited. An anonymous self-reported questionnaire was used to collect data during two time-points at six-month intervals. Results showed that having a "physical appearance" related hoped-for possible self and a "friendship" related feared possible self was associated with adolescent alcohol use after six months. Whereas, having the "physical appearance" related hoped-for and feared possible selves were associated with alcohol problems, at both, baseline and six months later. Future studies could clarify the meaning behind "physical appearance" related possible selves.