The men's discus throw event at the 1994 World Junior Championships in Athletics was held in Lisbon, Portugal, at Estádio Universitário de Lisboa on 20 and 21 July. A 2 kg (senior implement) discus was used.
| Gold | Frantz Kruger | |
| Silver | Julio Piñero | |
| Bronze | Timo Sinervo |
21 July
| Rank | Name | Nationality | Attempts | Result | Notes | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||||
| align=left | align=left | 58.06 | 58.22 | x | x | 57.66 | x | 58.22 | |||||
| align=left | align=left | | 53.10 | 53.32 | 57.80 | x | x | x | 57.80 | ||||
| align=left | align=left | | 55.16 | 56.46 | 55.66 | 56.76 | 56.52 | 55.74 | 56.76 | ||||
| 4 | align=left | align=left |  | 50.80 | x | 55.68 | 53.70 | x | 54.26 | 55.68 | |||
| 5 | align=left | align=left |  | 53.48 | x | x | 55.58 | x | 54.34 | 55.58 | |||
| 6 | align=left | align=left |  | 52.88 | 51.70 | 53.24 | x | 51.54 | x | 53.24 | |||
| 7 | align=left | align=left |  | 53.04 | x | x | x | x | x | 53.04 | |||
| 8 | align=left | align=left |  | 48.64 | 48.76 | 52.44 | x | x | 51.88 | 52.44 | |||
| 9 | align=left | align=left |  | 50.32 | 51.60 | 48.08 | 51.60 | ||||||
| 10 | align=left | align=left | | x | 50.86 | 50.86 | 50.86 | ||||||
| 11 | align=left | align=left |  | 48.92 | x | 49.08 | 49.08 | ||||||
| 12 | align=left | align=left | | x | x | 45.96 | 45.96 | ||||||
20 Jul
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 56.34 | - | - | 56.34 | Q | ||
| 2 | align=left | align=left | | 51.96 | 54.88 | - | 54.88 | Q | ||
| 3 | align=left | align=left | | 51.16 | 53.60 | - | 53.60 | Q | ||
| 4 | align=left | align=left | | x | 52.74 | 53.22 | 53.22 | Q | ||
| 5 | align=left | align=left | | 52.92 | 46.60 | 52.62 | 52.92 | q | ||
| 6 | align=left | align=left | | 52.74 | 50.88 | 50.16 | 52.74 | q | ||
| 7 | align=left | align=left | | x | 51.36 | 50.30 | 51.36 | q | ||
| 8 | align=left | align=left | 50.78 | 46.32 | 48.42 | 50.78 | ||||
| 9 | align=left | align=left | x | 47.94 | x | 47.94 | ||||
| 10 | align=left | align=left |  | 47.48 | 47.28 | x | 47.48 | |||
| 11 | align=left | align=left | | 42.86 | 47.26 | x | 47.26 | |||
| 12 | align=left | align=left |  | x | 45.18 | x | 45.18 | |||
| Rank | Name | Nationality | Attempts | Result | Notes | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | ||||||||
| 1 | align=left | align=left | | 55.82 | - | - | 55.82 | Q | ||
| 2 | align=left | align=left | 55.66 | - | - | 55.66 | Q | |||
| 3 | align=left | align=left | | 52.24 | x | x | 52.24 | q | ||
| 4 | align=left | align=left | | 50.38 | 51.64 | 47.12 | 51.64 | q | ||
| 5 | align=left | align=left | | x | x | 51.18 | 51.18 | q | ||
| 6 | align=left | align=left | x | 44.76 | 50.16 | 50.16 | ||||
| 7 | align=left | align=left | | 45.84 | 49.34 | 48.84 | 49.34 | |||
| 8 | align=left | align=left | | 48.64 | 49.14 | 48.64 | 49.14 | |||
| 9 | align=left | align=left |  | 48.18 | 48.60 | 46.84 | 48.60 | |||
| 10 | align=left | align=left |  | 42.28 | 47.96 | 47.62 | 47.96 | |||
| 11 | align=left | align=left |  | 44.80 | 45.66 | 46.68 | 46.68 | |||
| 12 | align=left | align=left | 37.24 | 38.70 | 34.74 | 38.70 | ||||
According to an unofficial count, 24 athletes from 19 countries participated in the event.