The purpose of this study was to compare the Aggression in boys with girls. A group of 100 adolescents (50 boys & 50 girls), aged 14 – 16 years recruited to participate in the study. The data were collected using Aggression Scale by Mathur and Bhatnagar (2004).To test the hypothesis„t‟ test was calculated. Result showed that there was a significant differences between boys and girls on aggression (t = 2.21, P < 0.05). On the t-test, the two groups differed significantly on their aggression. Boys were more aggressive than girls.