| Event: | Men's 800 metre freestyle |
| Games: | 2022 Asian Games |
| Venue: | Hangzhou Olympic Sports Expo Center |
| Date: | 28 September 2023 |
| Competitors: | 19 |
| Nations: | 12 |
| Win Value: | 7:46.03 |
| Gold: | Kim Woo-min |
| Goldnoc: | KOR |
| Silver: | Fei Liwei |
| Silvernoc: | CHN |
| Bronze: | Nguyễn Huy Hoàng |
| Bronzenoc: | VIE |
| Prev: | 2018 |
| Next: | 2026 |
See main article: Swimming at the 2022 Asian Games.
The men's 800 metre freestyle event at the 2022 Asian Games took place on 28 September 2023 at the Hangzhou Olympic Sports Expo Center.[1]
All times are Chinese Time
| width=220 | Date | width=50 | Time | width=100 | Event |
|---|---|---|---|---|---|
| Tuesday, 28 September 2023 | 10:28 | Slowest heat | |||
| 20:16 | Fastest heat |
| Rank | Heat | Lane | Swimmer | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 3 | 5 | 7:46.03 | , NR | ||||
| 3 | 4 | 7:49.90 | |||||
| 3 | 2 | 7:51.44 | |||||
| 4 | 3 | 3 | 7:53.18 | ||||
| 5 | 3 | 7 | 7:54.49 | ||||
| 6 | 3 | 6 | 8:02.00 | ||||
| 7 | 3 | 1 | 8:04.06 | ||||
| 8 | 2 | 5 | 8:07.17 | NR | |||
| 9 | 1 | 3 | 8:12.61 | ||||
| 10 | 2 | 4 | 8:12.72 | ||||
| 11 | 3 | 8 | 8:14.01 | ||||
| 12 | 2 | 3 | 8:21.04 | ||||
| 13 | 2 | 6 | 8:30.62 | ||||
| 14 | 2 | 7 | 8:35.35 | ||||
| 15 | 2 | 2 | 8:39.53 | ||||
| 16 | 2 | 8 | 9:13.14 | ||||
| 17 | 1 | 4 | 9:14.07 | ||||
| 18 | 1 | 5 | 9:14.20 | ||||
| 19 | 2 | 1 | 9:28.78 |