The boys' 55 kg competition in taekwondo at the 2010 Summer Youth Olympics in Singapore took place on August 16. A total of 12 men competed in this event, limited to fighters whose body weight was less than 55 kilograms. Preliminaries started at 15:04, quarterfinals started at 17:00, semifinals at 19:02 and the final at 20:09. Two bronze medals were awarded at the Taekwondo competitions.
Medalists
edit| Gold | Kaveh Rezaei Iran
|
| Silver | Nursultan Mamayev Kazakhstan
|
| Bronze | Jia Tan Singapore
|
Quoc Cuong Nguyen Vietnam
|
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 | ||||||||||||||||
 Kaveh Rezaei (IRI)
| |||||||||||||||||||
 Mohamed Asal (EGY)
| DSQ |  Peterson Sertune (HAI)
| RSC 1 0:55 | ||||||||||||||||
| Peterson Sertune (HAI)
| Kaveh Rezaei (IRI)
| ||||||||||||||||||
 Thiaerry Mabounda (CGO)
| 4 |  Jia Tan (SIN)
| RSC 3 1:33 | ||||||||||||||||
 Naing Dwe Shein Shein (MYA)
| 5 | Naing Dwe Shein Shein (MYA)
| 5 | ||||||||||||||||
| Jia Tan (SIN)
| 6 | ||||||||||||||||||
| Kaveh Rezaei (IRI)
| 4 | ||||||||||||||||||
 Nursultan Mamayev (KAZ)
| 2 | ||||||||||||||||||
 Quoc Cuong Nguyen (VIE)
| 4 | ||||||||||||||||||
 Óscar Muñoz (COL)
| 10 | Óscar Muñoz (COL)
| 3 | ||||||||||||||||
 Ebrahim Ahmed (BRN)
| 7 | Quoc Cuong Nguyen (VIE)
| 5 | ||||||||||||||||
| Nursultan Mamayev (KAZ)
| 8 | Nursultan Mamayev (KAZ)
| 6 | ||||||||||||||||
 Ranjan Shrestha (NEP)
| 3 | Nursultan Mamayev (KAZ)
| 2 | ||||||||||||||||
 José Cobas (CUB)
| 0 | ||||||||||||||||||