The men's 110 metres hurdles event at the 2008 World Junior Championships in Athletics was held in Bydgoszcz, Poland, at Zawisza Stadium on 11, 12 and 13 July. 99.0 cm (3'3) (junior implement) hurdles were used.
| Gold | Konstantin Shabanov | |
| Silver | Booker Nunley | |
| Bronze | Keiron Stewart |
13 July
Wind: +1.1 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | | 13.27 | ||||
| align=left | align=left | | 13.45 | ||||
| align=left | align=left | | 13.51 | ||||
| 4 | align=left | align=left | 13.51 | ||||
| 5 | align=left | align=left | | 13.52 | |||
| 6 | align=left | align=left |  | 13.53 | |||
| 7 | align=left | align=left |  | 13.60 | |||
| 8 | align=left | align=left |  | 13.65 |
12 July
Wind: -0.9 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 13.67 | Q | |||
| 2 | align=left | align=left | | 13.68 | Q | ||
| 3 | align=left | align=left | 13.83 | ||||
| 4 | align=left | align=left | 13.84 | ||||
| 5 | align=left | align=left |  | 14.03 | |||
| 6 | align=left | align=left |  | 14.04 | |||
| 7 | align=left | align=left |  | 15.09 | |||
| 8 | align=left | align=left | | 15.54 |
Wind: -1.7 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.41 | Q | ||
| 2 | align=left | align=left | | 13.57 | Q | ||
| 3 | align=left | align=left | | 13.60 | q | ||
| 4 | align=left | align=left | | 13.80 | |||
| 5 | align=left | align=left | 13.82 | ||||
| 6 | align=left | align=left | 13.91 | ||||
| 7 | align=left | align=left |  | 14.19 | |||
| 8 | align=left | align=left |  | 14.19 |
Wind: -1.0 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.55 | Q | ||
| 2 | align=left | align=left | | 13.61 | Q | ||
| 3 | align=left | align=left | | 13.62 | q | ||
| 4 | align=left | align=left | | 13.67 | |||
| 5 | align=left | align=left | 13.73 | ||||
| 6 | align=left | align=left | 13.95 | ||||
| 7 | align=left | align=left | 13.99 | ||||
| 8 | align=left | align=left | 14.14 |
11 July
Wind: -2.0 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.78 | Q | ||
| 2 | align=left | align=left | 13.96 | Q | |||
| 3 | align=left | align=left | | 14.03 | q | ||
| 4 | align=left | align=left |  | 14.26 | |||
| 5 | align=left | align=left | 14.32 | ||||
| 6 | align=left | align=left |  | 14.34 | |||
| 7 | align=left | align=left | 14.56 | ||||
| 8 | align=left | align=left |  | 14.65 |
Wind: -0.7 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.82 | Q | ||
| 2 | align=left | align=left | | 13.94 | Q | ||
| 3 | align=left | align=left | 14.00 | q | |||
| 4 | align=left | align=left |  | 14.09 | |||
| 5 | align=left | align=left |  | 14.30 | |||
| 6 | align=left | align=left | | 14.42 | |||
| 7 | align=left | align=left |  | 14.52 | |||
| 8 | align=left | align=left | 14.75 |
Wind: -0.6 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.84 | Q | ||
| 2 | align=left | align=left | | 14.18 | Q | ||
| 3 | align=left | align=left |  | 14.30 | |||
| 4 | align=left | align=left | | 14.58 | |||
| 5 | align=left | align=left | 15.13 | ||||
| 6 | align=left | align=left | 15.77 | ||||
| align=left | align=left | | DQ | IAAF rule 162.7 | |||
| align=left | align=left | | DNF |
Wind: -1.7 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.89 | Q | ||
| 2 | align=left | align=left | | 13.98 | Q | ||
| 3 | align=left | align=left | | 14.59 | |||
| 4 | align=left | align=left | 14.68 | ||||
| 5 | align=left | align=left |  | 14.89 | |||
| 6 | align=left | align=left |  | 15.23 | |||
| align=left | align=left | DQ | IAAF rule 162.7 |
Wind: -1.4 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.73 | Q | ||
| 2 | align=left | align=left | 13.91 | Q | |||
| 3 | align=left | align=left | | 14.07 | q | ||
| 4 | align=left | align=left | 14.20 | ||||
| 5 | align=left | align=left |  | 14.26 | |||
| 6 | align=left | align=left | 14.37 | ||||
| 7 | align=left | align=left |  | 14.56 | |||
| 8 | align=left | align=left |  | 14.59 | |||
| 9 | align=left | align=left |  | 15.06 |
Wind: -1.3 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.65 | Q | ||
| 2 | align=left | align=left | | 13.74 | Q | ||
| 3 | align=left | align=left | | 13.84 | q | ||
| 4 | align=left | align=left | 13.98 | q | |||
| 5 | align=left | align=left | 13.99 | q | |||
| 6 | align=left | align=left | | 14.15 | |||
| 7 | align=left | align=left | 14.69 | ||||
| 8 | align=left | align=left | 14.90 |
Wind: -1.0 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.68 | Q | ||
| 2 | align=left | align=left | 13.80 | Q | |||
| 3 | align=left | align=left | | 13.83 | q | ||
| 4 | align=left | align=left | 13.95 | q | |||
| 5 | align=left | align=left |  | 14.38 | |||
| 6 | align=left | align=left | 14.47 | ||||
| 7 | align=left | align=left | | 14.55 | |||
| 8 | align=left | align=left | | 14.59 | |||
| 9 | align=left | align=left |  | 14.66 |
Wind: -0.7 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 14.04 | Q | |||
| 2 | align=left | align=left | 14.05 | Q | |||
| 3 | align=left | align=left | | 14.19 | |||
| 4 | align=left | align=left |  | 14.34 | |||
| 5 | align=left | align=left | | 14.51 | |||
| 6 | align=left | align=left | | 14.66 | |||
| 7 | align=left | align=left |  | 14.95 | |||
| 8 | align=left | align=left | 15.86 |
According to an unofficial count, 65 athletes from 45 countries participated in the event.