| Event: | Boys' 800 metres |
| Competition: | 2015 World Youth Championships in Athletics |
| Venue: | Estadio Olímpico Pascual Guerrero |
| Dates: | 15, 16 and 18 July |
| Competitors: | 37 |
| Nations: | 29 |
| Win Value: | 1:45.58 |
| Gold: | Willy Tarbei |
| Goldnoc: | KEN |
| Silver: | Kipyegon Bett |
| Silvernoc: | KEN |
| Bronze: | Luis Fernando Pires |
| Bronzenoc: | BRA |
| Prev: | 2013 |
| Next: | 2017 |
The boys' 800 metres at the 2015 World Youth Championships in Athletics was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 15, 16 and 18 July 2015.[1]
Prior to the competition, the following records were as follows.
| World Youth Best | 1:43.37 | Rieti, Italy | 10 September 2011 | ||
| Championship Record | 1:44.08 | Lille, France | 9 July 2011 | ||
| World Youth Leading | 1:44.51 | Nairobi, Kenya | 17 June 2015 |
First 4 in each heat (Q) and the next 4 fastest (q) advance to the semifinals.[2]
| Rank | Heat | Name | Nationality | Time | Note | |
|---|---|---|---|---|---|---|
| 1 | 5 | 1:50.31 | Q | |||
| 2 | 2 | 1:50.92 | Q | |||
| 3 | 2 | 1:51.22 | Q | |||
| 4 | 3 | 1:51.38 | Q | |||
| 5 | 4 | 1:51.58 | Q | |||
| 6 | 3 | 1:51.89 | Q | |||
| 7 | 5 | 1:52.04 | Q, | |||
| 8 | 2 | 1:52.28 | Q, | |||
| 9 | 4 | 1:52.35 | Q | |||
| 10 | 4 | 1:52.47 | Q | |||
| 11 | 4 | 1:52.54 | Q | |||
| 12 | 4 | 1:52.64 | q | |||
| 13 | 2 | 1:52.68 | Q | |||
| 14 | 4 | 1:52.70 | q | |||
| 15 | 3 | 1:52.92 | Q | |||
| 16 | 3 | 1:53.03 | Q | |||
| 17 | 5 | 1:53.04 | Q | |||
| 18 | 5 | 1:53.17 | Q | |||
| 19 | 3 | 1:53.26 | q | |||
| 20 | 1 | 1:53.28 | Q | |||
| 21 | 1 | 1:53.32 | Q | |||
| 22 | 5 | 1:53.33 | q | |||
| 23 | 1 | 1:53.44 | Q | |||
| 24 | 1 | 1:53.60 | Q | |||
| 25 | 2 | 1:53.70 | ||||
| 26 | 4 | 1:53.98 | ||||
| 27 | 1 | 1:54.37 | ||||
| 28 | 4 | 1:54.79 | ||||
| 29 | 2 | 1:54.88 | ||||
| 30 | 3 | 1:55.13 | ||||
| 31 | 5 | 1:55.35 | ||||
| 32 | 2 | 1:55.43 | ||||
| 33 | 1 | 1:55.81 | ||||
| 33 | 5 | 1:55.81 | ||||
| 35 | 5 | 1:56.18 | ||||
| 36 | 3 | 2:02.05 | ||||
| 1 |
First 2 in each heat (Q) and the next 2 fastest (q) advance to the final.[3]
| Rank | Heat | Name | Nationality | Time | Note | |
|---|---|---|---|---|---|---|
| 1 | 1 | 1:47.11 | Q | |||
| 2 | 2 | 1:48.68 | Q | |||
| 3 | 1 | 1:50.31 | Q, | |||
| 4 | 3 | 1:50.56 | Q | |||
| 5 | 2 | 1:50.67 | Q, | |||
| 6 | 1 | 1:50.70 | q, | |||
| 7 | 3 | 1:51.01 | Q | |||
| 8 | 1 | 1:51.41 | q | |||
| 9 | 3 | 1:51.54 | ||||
| 10 | 3 | 1:51.56 | ||||
| 11 | 3 | 1:51.63 | ||||
| 12 | 2 | 1:52.23 | ||||
| 13 | 1 | 1:52.34 | ||||
| 14 | 1 | 1:52.53 | ||||
| 15 | 2 | 1:53.44 | ||||
| 16 | 2 | 1:54.47 | ||||
| 17 | 2 | 1:54.71 | ||||
| 18 | 3 | 1:57.02 | ||||
| 19 | 1 | 1:57.09 | ||||
| 20 | 2 | 1:57.69 | ||||
| 21 | 1 | 1:59.06 | ||||
| 22 | 2 | 2:00.31 | ||||
| 23 | 3 | 2:02.38 | ||||
| 3 |
| Rank | Name | Nationality | Time | Note | |
|---|---|---|---|---|---|
| 1:45.58 | |||||
| 1:45.86 | |||||
| 1:48.61 | |||||
| 4 | 1:49.11 | ||||
| 5 | 1:49.32 | ||||
| 6 | 1:51.71 | ||||
| 7 | 1:52.58 | ||||
| 8 | 1:55.92 |