| POS | Rank | Heat | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|
| 1 | 1 | 5 | Derek Redmond |
GBR |
45.33 |
| 2 | 1 | 2 | David Kitur |
KEN |
45.39 |
| 3 | 1 | 1 | Harry Reynolds |
USA |
45.51 |
| 4 | 2 | 5 | Jens Carlowitz |
GDR |
45.52 |
| 5 | 1 | 4 | Moses Ugbisie |
NGR |
45.55 |
| 6 | 1 | 3 | Gabriel Tiacoh |
CIV |
45.65 |
| 7 | 2 | 1 | Susumu Takano |
JPN |
45.68 |
| 8 | 1 | 6 | Roberto Hernández |
CUB |
45.68 |
| 9 | 2 | 3 | Darren Clark |
AUS |
45.70 |
| 10 | 3 | 5 | Roddie Haley |
USA |
45.73 |
| 11 | 3 | 3 | Aleksandr Kurochkin |
URS |
45.74 |
| 12 | 4 | 3 | Marcel Arnold |
SUI |
45.76 |
| 13 | 5 | 3 | Devon Morris |
JAM |
45.83 |
| 14 | 2 | 2 | Innocent Egbunike |
NGR |
45.84 |
| 15 | 2 | 4 | Thomas Schönlebe |
GDR |
45.85 |
| 16 | 3 | 1 | Mathias Schersing |
GDR |
45.86 |
| 17 | 2 | 6 | John Anzrah |
KEN |
45.91 |
| 18 | 4 | 5 | Tito Sawe |
KEN |
45.93 |
| 19 | 3 | 6 | Bert Cameron |
JAM |
45.94 |
| 20 | 3 | 2 | Elvis Forde |
BAR |
45.99 |
| 21 | 4 | 6 | Philip Brown |
GBR |
46.08 |
| 22 | 4 | 1 | Anton Skerritt |
CAN |
46.15 |
| 23 | 5 | 1 | Mohamed Amer Al-Malky |
OMA |
46.23 |
| 24 | 5 | 6 | Alemayehu Gudeta |
ETH |
46.25 |
| 25 | 6 | 6 | Vladimir Prosin |
URS |
46.26 |
| 26 | 4 | 2 | Héctor Daley |
PAN |
46.26 |
| 27 | 3 | 4 | Antonio McKay |
USA |
46.30 |
| 28 | 6 | 3 | Ismail Macev |
YUG |
46.30 |
| 29 | 4 | 4 | Roberto Ribaud |
ITA |
46.37 |
| 30 | 7 | 3 | Gerson A. Souza |
BRA |
46.39 |
| 31 | 5 | 5 | Luboš Balošák |
TCH |
46.49 |
| 32 | 6 | 5 | Antonio Sánchez |
ESP |
46.54 |
| 33 | 6 | 1 | Bruce Phillip |
DMA |
46.56 |
| 34 | 5 | 2 | Todd Bennett |
GBR |
46.58 |
| 35 | 5 | 4 | Yann Quentrec |
FRA |
46.78 |
| 36 | 7 | 5 | Tamás Molnár |
HUN |
46.80 |
| 37 | 7 | 1 | Felix Stevens |
CUB |
46.89 |
| 38 | 7 | 6 | Jesús Malavé |
VEN |
47.10 |
| 39 | 6 | 2 | Lyndon George |
LCA |
47.25 |
| 40 | 6 | 4 | Mark Senior |
JAM |
47.30 |
| 41 | 8 | 5 | Elieser Wattebosi |
INA |
47.32 |
| 42 | 7 | 4 | Adram M'Kumi |
TAN |
47.39 |
| 43 | 7 | 2 | Ian Morris |
TTO |
48.06 |
| 44 | 8 | 4 | Dawda Jallow |
GAM |
48.40 |
| 45 | 8 | 6 | Lenford O'Garro |
VIN |
49.19 |
| 46 | 8 | 2 | Bienvenu Yagbongo |
CAF |
50.14 |
| 1 | Mohamed Hossain Milzer |
BAN |
DNS | ||
| 8 | 3 | Yaya Seyba |
MLI |
DNS* |