2012 World Junior Championships in Athletics – Men's 800 metres
The men's 800 metres at the 2012 World Junior Championships in Athletics was held at the Estadi Olímpic Lluís Companys on 13, 14, and 15 July.Medalists
Records
, the existing world junior and championship records were as follows.Results
Heats
Qualification: The first 3 of each heat and the 3 fastest times qualified
| Rank | Heat | Lane | Name | Nationality | Time | Note |
| 1 | 3 | 2 | Jamal Hairane | | 1:47.61 | Q, PB |
| 2 | 3 | 6 | Jena Umar | | 1:47.80 | Q |
| 3 | 4 | 4 | Timothy Kitum | | 1:47.96 | Q |
| 4 | 4 | 5 | Mohamed Belbachir | | 1:48.24 | Q, PB |
| 5 | 1 | 8 | Edwin Kiplagat Melly | | 1:48.27 | Q, PB |
| 6 | 2 | 1 | Nijel Amos | | 1:48.31 | Q |
| 7 | 3 | 5 | Žan Rudolf | | 1:48.63 | Q |
| 8 | 2 | 6 | Elnazeer Abdelgader | | 1:48.66 | Q, SB |
| 9 | 1 | 2 | Wesley Vazquez | | 1:48.78 | Q |
| 9 | 4 | 2 | Tyler Smith | | 1:48.78 | Q |
| 11 | 3 | 4 | Shaquille Dill | | 1:49.06 | q, PB |
| 12 | 2 | 2 | Anthonio Mascoll | | 1:49.31 | Q |
| 12 | 3 | 3 | Nikolaus Franzmair | | 1:49.31 | q, NJ |
| 14 | 1 | 9 | Ben Waterman | | 1:49.48 | Q |
| 15 | 2 | 5 | Shaquille Walker | | 1:49.55 | q |
| 16 | 1 | 4 | Brad Mathas | | 1:49.73 | |
| 17 | 3 | 8 | Joren Bouckaert | | 1:49.74 | |
| 18 | 7 | 7 | Brandon McBride | | 1:49.77 | Q |
| 19 | 7 | 6 | Sho Kawamoto | | 1:50.12 | Q |
| 20 | 2 | 7 | Johan Rogestedt | | 1:50.25 | |
| 21 | 2 | 9 | Daniel Andújar | | 1:50.30 | |
| 22 | 7 | 1 | Kevin Stadler | | 1:50.39 | Q |
| 23 | 4 | 1 | Sean Molloy | | 1:50.43 | |
| 24 | 6 | 8 | Radouane Baaziri | | 1:50.45 | Q |
| 24 | 1 | 1 | Guilherme Pinto | | 1:50.45 | PB |
| 26 | 6 | 4 | Thapelo Madiba | | 1:50.52 | Q |
| 27 | 6 | 9 | Muayad Mohamed Ahmed | | 1:50.57 | Q |
| 28 | 7 | 5 | Oleksandr Shelest | | 1:50.70 | PB |
| 29 | 2 | 3 | Filip Ingebrigtsen | | 1:50.74 | |
| 30 | 1 | 3 | Tanner Sork | | 1:50.80 | |
| 31 | 7 | 3 | Víctor Emilio Ortiz | | 1:51.01 | |
| 32 | 6 | 3 | Brecht Bertels | | 1:51.18 | |
| 33 | 3 | 9 | Robert Lister | | 1:51.42 | |
| 34 | 7 | 4 | Alejandro Peirano | | 1:51.45 | |
| 35 | 4 | 9 | Ignacio Díaz-Cano | | 1:51.62 | |
| 36 | 5 | 3 | Mark English | | 1:51.74 | Q |
| 37 | 6 | 7 | Mohamed Amine Layachi | | 1:51.84 | |
| 38 | 5 | 7 | Dennis Krüger | | 1:51.86 | Q |
| 39 | 7 | 9 | Karl Griffin | | 1:51.98 | |
| 40 | 6 | 2 | Žan Kozan | | 1:52.01 | |
| 41 | 7 | 2 | Soufiane El Kabbouri | | 1:52.11 | |
| 42 | 4 | 8 | Valentin Voicu | | 1:52.18 | |
| 43 | 4 | 7 | Christos Dimitriou | | 1:52.59 | |
| 44 | 7 | 8 | Geabel Ali Al-Muradi | | 1:52.73 | PB |
| 45 | 4 | 6 | Alberto Mamba | | 1:52.91 | |
| 46 | 2 | 8 | Mark London | | 1:53.23 | |
| 47 | 1 | 6 | Shota Kozuma | | 1:53.40 | |
| 48 | 5 | 1 | Dominik Stadlmann | | 1:53.78 | Q |
| 49 | 5 | 8 | Artur Kuciapski | | 1:53.95 | |
| 50 | 5 | 6 | Joel Hogarth | | 1:53.98 | |
| 51 | 1 | 7 | Roald H. Frøskeland | | 1:54.12 | |
| 52 | 6 | 6 | Julian Oakley | | 1:54.74 | |
| 53 | 6 | 5 | Nemanja Kojić | | 1:54.79 | |
| 54 | 5 | 2 | Jorge Collares | | 1:55.19 | PB |
| 55 | 3 | 7 | Jacopo Lahbi | | 1:55.45 | |
| 56 | 2 | 4 | Alex Beddoes | | 1:58.30 | NJ |
| 57 | 5 | 5 | Mohamed Ahmed Ismail | | 1:58.65 | |
| 58 | 1 | 5 | Agit Mutlu | | 2:00.60 | |
| 59 | 4 | 3 | Rondre Lewis | | 2:03.67 | PB |
| 5 | 9 | Fiker Belete | | | |
| 5 | 4 | Carlos Díaz | | | |
Semi-Final
Qualification: The first 2 of each heat and the 2 fastest times qualified
| Rank | Heat | Lane | Name | Nationality | Time | Note |
| 1 | 3 | 8 | Edwin Kiplagat Melly | | 1:47.08 | Q, PB |
| 2 | 3 | 5 | Wesley Vazquez | | 1:47.37 | Q |
| 3 | 3 | 6 | Brandon McBride | | 1:47.69 | q |
| 4 | 3 | 7 | Mark English | | 1:47.77 | q |
| 5 | 3 | 4 | Radouane Baaziri | | 1:48.10 | |
| 6 | 2 | 5 | Timothy Kitum | | 1:49.09 | Q |
| 7 | 2 | 8 | Mohamed Belbachir | | 1:49.46 | Q |
| 8 | 1 | 7 | Nijel Amos | | 1:49.67 | Q |
| 9 | 2 | 4 | Jena Umar | | 1:49.68 | |
| 10 | 3 | 3 | Nikolaus Franzmair | | 1:49.71 | |
| 11 | 3 | 2 | Muayad Mohamed Ahmed | | 1:49.79 | |
| 12 | 1 | 9 | Dennis Krüger | | 1:49.89 | Q |
| 12 | 2 | 6 | Jamal Hairane | | 1:49.89 | |
| 14 | 1 | 5 | Žan Rudolf | | 1:49.93 | |
| 15 | 2 | 7 | Sho Kawamoto | | 1:50.17 | |
| 16 | 2 | 9 | Elnazeer Abdelgader | | 1:51.18 | |
| 17 | 2 | 2 | Shaquille Walker | | 1:51.43 | |
| 18 | 3 | 9 | Anthonio Mascoll | | 1:51.44 | |
| 19 | 1 | 2 | Shaquille Dill | | 1:51.66 | |
| 20 | 2 | 3 | Kevin Stadler | | 1:52.23 | |
| 21 | 1 | 3 | Dominik Stadlmann | | 1:52.43 | |
| 22 | 1 | 6 | Thapelo Madiba | | 1:53.10 | |
| 23 | 1 | 8 | Ben Waterman | | 1:53.78 | |
| 24 | 1 | 4 | Tyler Smith | | 1:54.95 | |
Final
Participation
According to an unofficial count, 60 athletes from 41 countries participated in the event.
