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.
Medalists
edit| Gold | Jin Hak Kim South Korea
|
| Silver | Aliaskhab Sirazhov Russia
|
| Bronze | Maksym Dominishyn Ukraine
|
Michel Samaha Lebanon
|
Results
edit- Legend
- PTG — Won by Points Gap
- SUP — Won by Superiority
- OT — Won on over time (Golden Point)
Main bracket
edit| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||
 Maksym Dominishyn (UKR)
| 12 | ||||||||||||||||||
 Tahir Gulec (GER)
| 12 | Tahir Gulec (GER)
| 8 | ||||||||||||||||
 Christopher Deleage (MON)
| 2 | Maksym Dominishyn (UKR)
| 4 | ||||||||||||||||
 Jin Hak Kim (KOR)
| 6 | ||||||||||||||||||
| Jin Hak Kim (KOR)
| 12 | ||||||||||||||||||
 Jia Zhe Christopher Lee (SIN)
| 1 | ||||||||||||||||||
| Jin Hak Kim (KOR)
| 6 | ||||||||||||||||||
 Aliaskhab Sirazhov (RUS)
| 4 | ||||||||||||||||||
 Vilson Lajčaj (MNE)
| 1 | ||||||||||||||||||
| Aliaskhab Sirazhov (RUS)
| 10 | ||||||||||||||||||
| Aliaskhab Sirazhov (RUS)
| 10 | ||||||||||||||||||
 Tosh van Dijk (SUR)
| 7 |  Michel Samaha (LIB)
| 4 | ||||||||||||||||
 Sabuhi Ismayilzada (AZE)
| 6 | Tosh van Dijk (SUR)
| 4 | ||||||||||||||||
| Michel Samaha (LIB)
| 5 | ||||||||||||||||||