Abstract. Bullying has become one of the most common violent behaviors among adolescentsworldwide. The current study examined the relationship between family functioning, happiness at school, and self-esteem with bullying among adolescents. A total of 121 adolescents (45 males and 76 females) aged between 12 – 15 years were recruited through simple random sampling. The measuring instruments were the Family Functioning in Adolescence Questionnaire (FFAQ), School Children’s Happiness Inventory (SCHI), Self-Esteem Scale (SSC), and Multidimensional Peer Victimization Scale (MPVS). Data were analyzed with multiple correlation techniques. The results showed that family functioning, happiness at school, and self-esteem were simultaneously correlated with bullying with negative direction. These findings have shown the importance of the roles of family and school to prevent bullying acts among adolescents.