This research is motivated by the rampant cases of bullying that occur in the community, especially
in the school environment. The impact of this bullying is alarming for the mental health of
adolescents, both adolescents who become perpetrators and adolescents who are victims. Even in
some cases, bullying is fatal to the life of a teenager. This study aims to determine the relationship
between self-esteem and bullying behavior in adolescents at SMP Negeri 30 Padang. The research
method used is quantitative. The population in this study were 314 students consisting of grades VII
and VIII. The research sample consisted of 176 students. Mechanical sampling in this study using the
technique of proportionate stratified random sampling method is the determination of the sample
noticed strata (levels) and taking into consideration the elements of the existing categories in the
study population. The results of this study can be concluded 1) The self-esteem category of 30 Negri
Junior High School students in Padang shows a percentage of 30.2% having a high level of self�esteem and 69.8% having a low level of self-esteem, 2) The category of bullying behavior in the 30
Negri Junior High School in Padang shows the percentage of 80.2% tends to behave in a considerable
bullying, and 19.8% tend to act in a small bullying, 3) This study proves that there is a negative
relationship between self-esteem and bullying behavior in adolescents in SMP Negeri 30 Padang.
Keywords: Self-esteem, bullying behavior, adolescents