| Event: | Athletics – Boys' 800 metres |
| Games: | 2014 Summer Youth |
| Venue: | Nanjing Olympic Sports Centre |
| Date: | August 22–25 |
| Competitors: | 21 |
| Nations: | 21 |
| Gold: | Myles Marshall |
| Goldnoc: | USA |
| Silver: | Geofrey Balimumiti |
| Silvernoc: | UGA |
| Bronze: | Bacha Mulata |
| Bronzenoc: | ETH |
| Next: | 2018 |
The boys’ 800 m competition at the 2014 Summer Youth Olympics was held on 22–25 August 2014 in Nanjing Olympic Sports Center.
| Date | Time | Round | |
|---|---|---|---|
| 22 August 2014 | 21:00 | Heats | |
| 25 August 2014 | 19:55 | Final |
Eight fastest athletes advanced to Final A, the others advanced to Final B, or C according to their times.
| Rank | Heat | Lane | Athlete | Result | Notes | Q | |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 4 | 1:50.22 | FA | |||
| 2 | 1 | 2 | 1:50.26 | PB | FA | ||
| 3 | 3 | 7 | 1:50.43 | PB | FA | ||
| 4 | 3 | 5 | 1:50.68 | PB | FA | ||
| 5 | 1 | 6 | 1:50.77 | PB | FA | ||
| 6 | 1 | 3 | 1:51.12 | FA | |||
| 7 | 2 | 8 | 1:51.18 | FA | |||
| 8 | 1 | 5 | 1:51.29 | PB | FA | ||
| 9 | 2 | 2 | 1:51.45 | FB | |||
| 10 | 2 | 7 | 1:51.54 | PB | FB | ||
| 11 | 3 | 4 | 1:51.62 | PB | FB | ||
| 12 | 2 | 6 | 1:52.35 | FB | |||
| 13 | 3 | 2 | 1:52.55 | FB | |||
| 14 | 3 | 8 | 1:54.66 | FB | |||
| 15 | 2 | 4 | 1:56.44 | FB | |||
| 16 | 2 | 5 | 2:00.93 | FC | |||
| 17 | 1 | 7 | 2:00.99 | FC | |||
| 18 | 3 | 3 | 2:02.45 | FC | |||
| 19 | 2 | 3 | 2:03.88 | PB | FC | ||
| 1 | 8 | FC | |||||
| 3 | 6 | FC |
| Rank | Final Placing | Lane | Athlete | Result | Notes | |
|---|---|---|---|---|---|---|
| 1 | 7 | 1:49.14 | ||||
| 2 | 4 | 1:49.37 | PB | |||
| 3 | 2 | 1:49.73 | ||||
| 4 | 4 | 6 | 1:49.99 | PB | ||
| 5 | 5 | 5 | 1:50.58 | PB | ||
| 6 | 6 | 8 | 1:52.35 | |||
| 7 | 7 | 3 | 1:52.49 | |||
| 9 |
| Rank | Final Placing | Lane | Athlete | Result | Notes | |
|---|---|---|---|---|---|---|
| 1 | 8 | 6 | 1:52.40 | |||
| 2 | 9 | 5 | 1:52.56 | |||
| 3 | 10 | 4 | 1:53.24 | |||
| 4 | 11 | 3 | 1:54.18 | |||
| 5 | 12 | 2 | 1:56.26 | |||
| 6 | 13 | 8 | 1:58.30 | |||
| 7 |
| Rank | Final Placing | Lane | Athlete | Result | Notes | |
|---|---|---|---|---|---|---|
| 1 | 14 | 4 | 1:59.45 | |||
| 2 | 15 | 3 | 2:00.35 | |||
| 3 | 16 | 7 | 2:00.70 | PB | ||
| 4 | 17 | 6 | 2:02.58 | PB | ||
| 5 | 18 | 5 | 2:04.07 | |||
| 2 |