Purpose: The purpose of this study was to evaluate the effects of the core competency support program in parenting role on sense of competence in parenting, parent-child communication, and parental role satisfaction in parents of adolescents. Methods: The study was a quasi-experimental design. Participants for the study were parents of adolescents, 12 in the experimental group and 12 in the control group. Data were analyzed using Fisher`s exact test and Mann-Whitney U test with the SPSS/WIN 14.0 program. Results: Scores for sense of competence in parenting of participants in the core competency support program in parenting role were not significantly different from those in the control group. Participants in the core competency support program in parenting role had higher parent-child communication, which were significantly different from those in the control group. Participants in the core competency support program in parenting role had higher parental role satisfaction, which were significantly different from those in the control group. Conclusion: The core competency support program in parenting role was effective in increasing parent-child communication and parental role satisfaction for parents of adolescents. Therefore, this approach is recommended as a strategy for parents of adolescents.