The boys' 73 kg competition in taekwondo at the 2010 Summer Youth Olympics in Singapore took place on August 18. A total of 10 men competed in this event, limited to fighters whose body weight was less than 73 kilograms. Preliminaries started at 14:16, quarterfinals started at 15:54, semifinals at 19:02 and the final at 20:09. Two bronze medals were awarded at the Taekwondo competitions.