Although relatively higher injury occurrence of head injury has been reported in young age, few study has investigated the biomechanics of the breakfall in adolescent judokas. The aim of the present study was to demonstrate kinematic characteristics of the breakfall for osoto-gari in judokas at young age. Five adolescent judokas volunteered to participate in the study. The motion data of the breakfall for osoto-gari were collected with a three-dimensional motion analysis technique. Our result demonstrated that there are no significant differences in the hip and neck movement pattern between the novice and the adolescent judokas (p > 0.05). Our result suggests that age and judo experience may not be greatly associated with the skill level of the breakfall motion for osotogari in adolescent judokas.