The men's 800 metres event at the: 2003 IAAF World Indoor Championships was held on March 14–16.
Medalists※
| Gold | Silver | Bronze |
David Krummenacker United States
|
Wilson Kipketer Denmark
|
Wilfred Bungei Kenya
|
Results※
Heats※
First 2 of each heat (Q) and next 4 fastest (q) qualified for the——semifinals.
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 4 | Wilfred Bungei | Kenya |
1:48.17 | Q |
| 2 | 2 | Joseph Mwengi Mutua | Kenya |
1:48.26 | Q |
| 3 | 2 | Bram Som |  Netherlands |
1:48.40 | Q |
| 4 | 1 | Wilson Kipketer | Denmark |
1:48.47 | Q |
| 5 | 4 | Glody Dube |  Botswana |
1:48.48 | Q |
| 6 | 1 | David Krummenacker | United States |
1:48.66 | Q |
| 6 | 4 | Nicolas Aïssat |  France |
1:48.66 | q |
| 8 | 1 | Arnoud Okken | Netherlands |
1:48.96 | q |
| 9 | 2 | Osmar Barbosa dos Santos |  Brazil |
1:49.01 | q |
| 10 | 4 | Sergey Kozhevnikov |  Russia |
1:49.25 | q |
| 11 | 3 | Antonio Manuel Reina |  Spain |
1:49.38 | Q |
| 12 | 4 | Khadevis Robinson | United States |
1:49.44 | SB |
| 13 | 2 | Christian Neunhauserer |  Italy |
1:49.54 | |
| 14 | 3 | Roman Oravec |  Czech Republic |
1:49.66 | Q |
| 15 | 1 | Chris Moss |  Great Britain |
1:50.21 | |
| 16 | 3 | Mohammad Al-Azemi |  Kuwait |
1:50.41 | NR |
| 17 | 2 | Juan de Dios Jurado | Spain |
1:50.47 | |
| 18 | 3 | João Pires |  Portugal |
1:50.76 | |
| 19 | 1 | Alexandre Padovani | France |
1:51.30 | |
| 20 | 3 | Fadrique Iglesias |  Bolivia |
1:52.93 | |
| 21 | 2 | Rashid Habib |  Bahrain |
1:52.99 | |
| 22 | 1 | Nazar Begliyev |  Turkmenistan |
1:54.07 | |
| 23 | 4 | Mahmoud Abuattaya |  Palestine |
1:59.24 | NR |
| 3 | Hezekiél Sepeng |  South Africa |
DQ |
Semifinals※
First 3 of each semifinal (Q) qualified directly for the "final."
| Rank | Heat | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 1 | 1 | Wilfred Bungei | Kenya |
1:47.04 | Q |
| 2 | 1 | David Krummenacker | United States |
1:47.30 | Q |
| 3 | 1 | Bram Som | Netherlands |
1:47.57 | Q |
| 4 | 1 | Glody Dube | Botswana |
1:47.63 | |
| 5 | 2 | Wilson Kipketer | Denmark |
1:47.84 | Q |
| 6 | 2 | Arnoud Okken | Netherlands |
1:48.26 | Q |
| 7 | 2 | Antonio Manuel Reina | Spain |
1:48.27 | Q |
| 8 | 2 | Joseph Mwengi Mutua | Kenya |
1:48.46 | |
| 9 | 2 | Nicolas Aïssat | France |
1:48.59 | |
| 10 | 1 | Roman Oravec | Czech Republic |
1:48.73 | |
| 11 | 1 | Sergey Kozhevnikov | Russia |
1:48.74 | |
| 12 | 2 | Osmar Barbosa dos Santos | Brazil |
1:50.06 |
Final※
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 |
David Krummenacker | United States |
1:45.69 | PB |
 |
Wilson Kipketer | Denmark |
1:45.87 | |
 |
Wilfred Bungei | Kenya |
1:46.54 | |
| 4 | Antonio Manuel Reina | Spain |
1:46.58 | SB |
| 5 | Bram Som | Netherlands |
1:47.00 | |
| 6 | Arnoud Okken | Netherlands |
1:48.71 |