Penelitian ini bertujuan mengetahui peranan lima besar kepribadian (keterbukaan, kesadaran, ekstraversi, keramahan dan neurotisme) terhadap kecenderungan buli pada remaja di SMP Islam Sabilal Muhtadin Banjarmasin. Subjek penelitian berjumlah 75 (tujuh puluh lima) orang. Teknik pengambilan data dengan cara purposive sampling. Alat pengumpul data yang digunakan adalah skala lima besar kepribadian dan skala kecenderungan buli. Penelitian ini menggunakan pendekatan kuantitatif dan menggunakan teknik analisis regresi berganda. Hasil penelitian menunjukkan bahwa dari kelima variabel bebas yang diteliti, terdapat satu variabel yang secara signifikan berperan negatif terhadap kecenderungan buli pada remaja, yaitu variabel dimensi keramahan. Sumbangan efektif variabel bebas (keterbukaan, kesadaran, ekstraversi, keramahan, dan neurotisme) terhadap variabel terikat (kecenderungan buli) sebesar 50,6%. Kata Kunci: Lima Besar Kepribadian, Kecenderungan Buli. This study aimed at finding out the roles of the big five personality traits towards bullying tendencies in adolescents at SMP Islam (Islamic Junior High School) Sabilal Muhtadin Banjarmasin. The subjects in this study were the students of SMP Islam Sabilal Muhtadin Banjarmasin in total of 75 (seventy five) people. The data were collected by purposive sampling technique. The instruments for collecting the data were big five personality trait scale an bullying tendency scale. This study employed a quantitative approach and a multiple regression analysis technique. The results showed that out of five independent variables studied, there was one variable that significantly contributed a negative role to the bullying tendencies in adolescents, namely the variable of agreeableness. The effective contribution of independent variables (openness, conscientiousness, extraversion, agreeableness and neuroticism) to the dependent variable (the bullying tendencies) was 50.6 %.Keywords: big five personality traits, bullying tendencies