The word ‘yoga’ derives from the Sanskrit language ‘yoke’ that means ‘union between body and mind’. Yogic practices help the students achieve mental, emotional and physical balance. Yoga improves fitness, promotes relaxation, develops self-concept, self-confidence, positive attitude and socialability and reduces stress as well as anxiety. Social ability refers to the ability or characteristic of a person who deals easily with social performance situation.The purpose of the present study intended to find out of effects of yogasanas on socialability of school boys. One hundred and twenty (N=120) school boys of District Howrah, West Bengal State were selected at randomly as subjects for the present study. The age limit of the subjects was 10-12 years. All the subjects were divided into two equal groups such as Gr. Y and Gr. C. Gr. Y was experimental group and Gr. C served as control group. Socialability Questionnaire designed by Berent Jonathan which was employed as an adapted form to all the subjects of Gr. Y and Gr. C and thereafter specific yogic treatment was given to Gr. Y for four day in a week and continued one year and finally the subjects were retested on criterion measures. The data were analysed by paired t–test to find out the effects of the treatment. The results of the present study showed that the social ability was improved significantly at .05 level of confidence among yogasanas group after one year yogic treatment. Social ability of yogasanas group was improved significantly after one year treatment.