The men's long jump at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 10 and 11 July.[1]
| Gold | Sergey Morgunov | |
| Silver | Andreas Trajkovski Denmark | |
| Bronze | Jarrion Lawson United States |
, the existing world junior and championship records were as follows.
| World Junior Record | 8.35 m | Cheboksary, Russia | 20 June 2012 | ||
| Championship Record | 8.20 m | Plovdiv, Bulgaria | 9 August 1990 | ||
| World Junior Leading | 8.35 m | Cheboksary, Russia | 20 June 2012 |
Qualification: Standard 7.70 m (Q) or at least best 12 qualified (q)
| Rank | Group | Name | Nationality |
|
|
| Result | Note | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | B | X | 8.01 | 8.01 | Q | ||||
| 2 | A | 7.59 | 7.74 | 7.74 | Q | ||||
| 3 | B | X | 7.73 | 7.73 | Q | ||||
| 4 | A | 7.72 | 7.72 | Q | |||||
| 5 | A | 7.67 | 7.33 | 7.67 | q | ||||
| 6 | A | X | 7.36 | 7.64 | 7.64 | q | |||
| 7 | A | X | 7.62 | X | 7.62 | q | |||
| 8 | A | 7.27 | X | 7.58 | 7.58 | q | |||
| 9 | B | 7.57 | X | 7.29 | 7.57 | q | |||
| 10 | B | 7.39 | X | 7.55 | 7.55 | q | |||
| 11 | A | 7.33 | 7.50 | 7.54 | 7.54 | q | |||
| 12 | B | 7.54 | X | 7.44 | 7.54 | q | |||
| 13 | A | 7.48 | X | 7.24 | 7.48 | ||||
| 14 | B | 7.45 | X | 7.32 | 7.45 | ||||
| 15 | A | 7.39 | 7.05 | X | 7.39 | ||||
| 16 | A | 7.09 | 7.27 | 7.38 | 7.38 | ||||
| 17 | B | X | X | 7.38 | 7.38 | ||||
| 18 | B | 7.34 | X | 7.30 | 7.34 | ||||
| 19 | A | 7.04 | 7.26 | X | 7.26 | ||||
| 20 | B | X | X | 7.26 | 7.26 | ||||
| 21 | A | 7.24 | 7.13 | 5.39 | 7.24 | ||||
| 22 | B | 7.04 | 7.22 | 7.13 | 7.22 | ||||
| 23 | B | 6.43 | 5.36 | 7.22 | 7.22 | ||||
| 24 | B | 6.46 | 7.11 | X | 7.11 | ||||
| – | A | X | X | X | NM | ||||
| – | A | X | X | NM | |||||
| – | B | X | NM | ||||||
| – | B | – | – | – | DNS |
| Rank | Name | Nationality |
|
|
|
|
|
| Result | Note | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 8.09 | X | X | X | X | 7.93 | 8.09 | |||||
| 7.53 | 7.56 | X | 7.48 | 7.44 | 7.82 | 7.82 | NJ | ||||
| 7.41 | X | X | 7.64 | X | 7.61 | 7.64 | |||||
| 4 | 7.16 | 7.53 | 7.64 | X | 7.48 | 7.42 | 7.64 | ||||
| 5 | 7.28 | 7.33 | 7.52 | 7.47 | 7.54 | X | 7.54 | ||||
| 6 | 7.51 | 7.43 | X | 5.21 | 7.51 | ||||||
| 7 | 7.41 | X | 7.46 | 7.49 | X | 7.47 | 7.49 | ||||
| 8 | 5.81 | 7.20 | 7.36 | 7.08 | 7.12 | X | 7.36 | ||||
| 9 | 7.16 | 7.31 | 6.91 | 7.31 | |||||||
| 10 | 7.29 | 7.10 | 7.29 | 7.29 | |||||||
| 11 | 7.27 | 7.27 | 7.19 | 7.27 | |||||||
| 12 | 7.15 | 7.03 | 6.71 | 7.15 |
According to an unofficial count, 27 athletes from 20 countries participated in the event.