Swimming at the 2014 Summer Youth Olympics – Boys' 400 metre freestyle
The boys' 400 metre freestyle event in swimming at the 2014 Summer Youth Olympics took place on 17 August at the Nanjing Olympic Sports Centre in Nanjing, China.Results
Heats
The heats were held at 10:00.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 3 | Ahmed Akram | | 3:52.02 | Q |
| 2 | 4 | 4 | Wojciech Wojdak | | 3:52.80 | Q |
| 3 | 3 | 8 | Marcelo Acosta | | 3:53.14 | Q |
| 4 | 2 | 2 | Mykhailo Romanchuk | | 3:53.31 | Q |
| 5 | 4 | 7 | Ido Haber | | 3:53.45 | Q |
| 6 | 4 | 5 | Henrik Christiansen | | 3:53.58 | Q |
| 7 | 3 | 3 | Luiz Altamir Melo | | 3:53.79 | Q |
| 8 | 3 | 4 | Guillermo Sánchez | | 3:55.32 | Q |
| 9 | 3 | 5 | Povilas Strazdas | | 3:55.62 | |
| 10 | 3 | 6 | Nils Liess | | 3:55.66 | |
| 11 | 4 | 8 | Welson Sim | | 3:55.72 | |
| 12 | 2 | 1 | Patrick Ransford | | 3:56.31 | |
| 13 | 4 | 2 | Marc Vivas | | 3:56.35 | |
| 14 | 4 | 6 | Brent Szurdoki | | 3:56.84 | |
| 15 | 4 | 1 | Rahiti De Vos | | 3:56.88 | |
| 16 | 2 | 7 | Alexei Sancov | | 3:56.89 | |
| 17 | 3 | 7 | Michael Mincham | | 3:57.33 | |
| 18 | 2 | 5 | Sven Saemundsson | | 3:57.55 | |
| 19 | 2 | 8 | Ricardo Vargas | | 3:58.55 | |
| 20 | 2 | 4 | Yudai Amada | | 4:00.03 | |
| 21 | 2 | 6 | Rafael Gil | | 4:00.11 | |
| 22 | 3 | 1 | Marc Hinawi | | 4:01.38 | |
| 23 | 1 | 5 | Grega Popović | | 4:01.69 | |
| 24 | 3 | 2 | Martyn Walton | | 4:02.40 | |
| 25 | 1 | 3 | Colin Gilbert | | 4:02.51 | |
| 26 | 1 | 2 | Sebastian Steffan | | 4:03.34 | |
| 27 | 2 | 3 | André Farinha | | 4:06.13 | |
| 28 | 1 | 4 | Anthony Selby | | 4:06.24 | |
| 29 | 1 | 1 | Stefan Jankulovski | | 4:10.71 | |
| 30 | 1 | 7 | Pol Arias | | 4:11.13 | |
| 31 | 1 | 6 | Luis Vega Torres | | 4:11.37 | |
Final
The final was held at 18:00.
| Rank | Lane | Name | Nationality | Time | Notes |
| 6 | Mykhailo Romanchuk | | 3:49.76 | |
| 3 | Marcelo Acosta | | 3:51.32 | |
| 7 | Henrik Christiansen | | 3:51.55 | |
| 4 | 4 | Ahmed Akram | | 3:51.78 | |
| 5 | 2 | Ido Haber | | 3:53.55 | |
| 6 | 5 | Wojciech Wojdak | | 3:53.96 | |
| 7 | 1 | Luiz Altamir Melo | | 3:55.07 | |
| 8 | 8 | Guillermo Sánchez | | 3:56.08 | |
