The present investigation is an attempt to study the interpersonal skills of single adolescents and adolescents having siblings. It is based on the hypothesis that there is no significant difference between the interpersonal skills of single child adolescents and adolescents having siblings as perceived by peer group and teachers. The size of sample is 400, comprising 200 single child adolescents and another 200 adolescents having siblings of district. Sirsa, Haryana. A self constructed and standardized scale consisted 72 items for peer group and 50 items for teachers was designed by the investigator. Ex- post facto research method was used. The data was analyzed using t-test. The findings revealed no significance difference in the level of interpersonal skills of single child adolescents and adolescents having siblings.