| Final 19:13 | time | | L | | 1. Sun Yang |  China | 3:42.92 | | 4 | | 2. Naito Ehara |  Japan | 3:47.14 | | 2 | | 3. Kosuke Hagino | Japan | 3:47.20 | | 5 | | 4. Lee Ho-joon |  South Korea | 3:48.28 | | 3 | | 5. Ji Xinjie | China | 3:50.06 | | 6 | | 6. Nguyễn Hữu Kim Sơn |  Vietnam | 3:51.67 | | 7 | | 7. Khader Baqlah |  Jordan | 3:52.77 | | 1 | | 8. Aflah Fadlan Prawira |  Indonesia | 3:53.01 | | 8 |
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| Venue: GBK Aquatic Center. |
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Heats - Tuesday 21.08 Morning session 09:58 |
| Ranking | time | | L | H | | 1. Sun Yang | China | 3:49.13 | Q | 4 | 3 | | 2. Kosuke Hagino | Japan | 3:50.67 | Q | 5 | 3 | | 3. Lee Ho-joon | South Korea | 3:52.80 | Q | 3 | 2 | | 4. Ji Xinjie | China | 3:53.11 | Q | 5 | 2 | | 5. Naito Ehara | Japan | 3:53.24 | Q | 4 | 2 | | 6. Nguyễn Hữu Kim Sơn | Vietnam | 3:54.01 | Q | 7 | 2 | | 7. Khader Baqlah | Jordan | 3:54.27 | Q | 2 | 3 | | 8. Aflah Fadlan Prawira | Indonesia | 3:54.45 | Q | 2 | 2 | | eliminated in Heats | | 9. Welson Sim |  Malaysia | 3:54.48 | | 3 | 3 | | 10.Cheuk Ming Ho |  Hong Kong | 3:55.13 | | 1 | 3 | | 11.Glen Lim |  Singapore | 3:55.59 | | 6 | 2 | | 12.Mokhtar Al-Yamani |  Yemen | 3:57.61 | | 1 | 2 | | 13.Pang Sheng Jun | Singapore | 4:01.26 | | 7 | 3 | | 14.Jang Dong-hyeok | South Korea | 4:03.46 | | 8 | 3 | | 15.Putera Muhammad Randa | Indonesia | 4:04.96 | | 8 | 2 | | 16.Chan Chun Hei | Hong Kong | 4:05.80 | | 4 | 1 | | 17.Nguyễn Huy Hoàng | Vietnam | 4:10.66 | | 6 | 3 | | 18.Buyantogtokh Boldbaatar |  Mongolia | 4:36.79 | | 2 | 1 | | 19.Adam Barghouthy |  Palestine | 4:45.98 | | 3 | 1 | | 20.Mubal Azzam Ibrahim |  Maldives | 4:48.44 | | 6 | 1 | | 21.Batmunkh Boldbaatar | Mongolia | 5:01.74 | | 5 | 1 | | 22.Haish Hassan Hussain | Maldives | 5:11.70 | | 7 | 1 |
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