The Boys' 55 kg tournament in Judo at the 2014 Summer Youth Olympics was held on August 17 at the . This event was the lightest of the boy's judo weight classes, limiting competitors to a maximum of 55 kilograms of body mass. The tournament bracket consisted of a single-elimination contest culminating in a gold medal match. There was also a repechage to determine the winners of the two bronze medals. Each judoka who had lost before the finals competed in the repechage with the two finalists getting bronze medals.