| Swimming – Men's 400 metre individual medley at the 2015 SEA Games | ||||||||||
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| Venue | OCBC Aquatic Centre | |||||||||
| Date | 9 June 2015 | |||||||||
| Competitors | 7 from 5 nations | |||||||||
| Medalists | ||||||||||
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The men's 400 metre individual medley competition of the swimming event at the 2015 SEA Games was held on 9 June at the OCBC Aquatic Centre in Kallang, Singapore. [1]
Prior to this competition, the existing Asian and Games records were as follows:
| Asian record |  Kosuke Hagino (JPN) | 4:07.61 | Niigata, Japan | 11 April 2013 |
| Games record |  Ratapong Sirisanont (THA) | 4:23.20 | Ho Chi Minh City, Vietnam | 6 December 2003 |
| Date | Time | Event |
|---|---|---|
| Tuesday, 9 June 2015 | 19:53 | Final |
| KEY: | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best | WD | Withdrew | DNF | Did not finish |
The final was held on 9 June.
| Rank | Lane | Athletes | Time | Notes |
|---|---|---|---|---|
 | 5 |  Quah Zheng Wen (SIN) | 4:23.50 | |
 | 3 | Pang Sheng Jun (SIN) | 4:24.81 | |
 | 4 |  Trần Duy Khôi (VIE) | 4:26.29 | |
| 4 | 2 |  Aflah Fadlan Prawira (INA) | 4:29.79 | |
| 5 | 1 |  Jose Joaquin Gonzalez (PHI) | 4:31.37 | |
| 6 | 6 |  Jiarapong Sangkhawat (THA) | 4:36.57 | |
| 7 | 7 | Muhammad Hamgari (INA) | 4:39.02 |
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