The men's 110 metres hurdles event at the 1994 World Junior Championships in Athletics was held in Lisbon, Portugal, at Estádio Universitário de Lisboa on 21 and 22 July. 106.7 cm (3'6) (senior implement) hurdles were used.
| Gold | Frank Busemann | |
| Silver | Dudley Dorival | |
| Bronze | Darius Pemberton |
22 July
Wind: +2.1 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| align=left | align=left | 13.47 w | |||||
| align=left | align=left | | 13.65 w | ||||
| align=left | align=left | | 13.93 w | ||||
| 4 | align=left | align=left |  | 14.00 w | |||
| 5 | align=left | align=left |  | 14.05 w | |||
| 6 | align=left | align=left |  | 14.21 w | |||
| 7 | align=left | align=left | 14.23 w | ||||
| 8 | align=left | align=left |  | 14.31 w |
21 July
Wind: +1.9 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 14.05 | Q | ||
| 2 | align=left | align=left | | 14.06 | Q | ||
| 3 | align=left | align=left | 14.08 | Q | |||
| 4 | align=left | align=left | | 14.11 | Q | ||
| 5 | align=left | align=left | 14.18 | ||||
| 6 | align=left | align=left |  | 14.21 | |||
| 7 | align=left | align=left | 14.52 | ||||
| align=left | align=left |  | DNF |
Wind: +2.1 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 13.70 w | Q | |||
| 2 | align=left | align=left | | 14.14 w | Q | ||
| 3 | align=left | align=left | | 14.14 w | Q | ||
| 4 | align=left | align=left | | 14.20 w | Q | ||
| 5 | align=left | align=left |  | 14.23 w | |||
| 6 | align=left | align=left | | 14.32 w | |||
| 7 | align=left | align=left |  | 14.35 w | |||
| 8 | align=left | align=left | | 14.90 w |
21 July
Wind: +1.6 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 13.85 | Q | ||
| 2 | align=left | align=left | | 14.09 | Q | ||
| 3 | align=left | align=left | | 14.24 | q | ||
| 4 | align=left | align=left |  | 14.38 | |||
| 5 | align=left | align=left |  | 14.44 | |||
| 6 | align=left | align=left |  | 14.55 | |||
| 7 | align=left | align=left | 15.92 |
Wind: +1.4 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 14.06 | Q | |||
| 2 | align=left | align=left | | 14.28 | Q | ||
| 3 | align=left | align=left | | 14.29 | q | ||
| 4 | align=left | align=left | | 14.35 | |||
| 5 | align=left | align=left |  | 14.47 | |||
| align=left | align=left |  | DNF | ||||
| align=left | align=left |  | DNF |
Wind: +1.6 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 14.02 | Q | ||
| 2 | align=left | align=left | | 14.03 | Q | ||
| 3 | align=left | align=left | | 14.24 | q | ||
| 4 | align=left | align=left | | 14.36 | |||
| 5 | align=left | align=left | 14.79 | ||||
| 6 | align=left | align=left | 14.98 | ||||
| align=left | align=left | | DNF |
Wind: +1.7 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | 13.69 | Q | |||
| 2 | align=left | align=left | | 14.15 | Q | ||
| 3 | align=left | align=left | | 14.20 | q | ||
| 4 | align=left | align=left | 14.26 | q | |||
| 5 | align=left | align=left | 14.43 | ||||
| 6 | align=left | align=left | 15.04 |
Wind: +1.4 m/s
| Rank | Name | Nationality | Time | Notes | |||
|---|---|---|---|---|---|---|---|
| 1 | align=left | align=left | | 14.27 | Q | ||
| 2 | align=left | align=left | | 14.28 | Q | ||
| 3 | align=left | align=left | 14.31 | q | |||
| 4 | align=left | align=left |  | 14.39 | |||
| 5 | align=left | align=left | 14.51 | ||||
| 6 | align=left | align=left | 14.62 | ||||
| 7 | align=left | align=left |  | 14.70 |
According to an unofficial count, 34 athletes from 25 countries participated in the event.