| Order / Lane | ATHLETE | COUNTRY | PB | SB 1983 | 
|---|---|---|---|---|
| Philip Brown |  GBR | 46.60 | 46.60 | |
| Michael Franks |  USA | 46.16 | 46.16 | |
| Christopher Madzokere |  ZIM | 47.17 | 47.17 | |
| Dušan Malovec |  TCH | 45.83 | 45.83 | |
| Gary Minihan |  AUS | 45.65 | 45.65 | |
| Mike Okot |  UGA | 46.69 | 46.69 | |
| Thomas Schönlebe |  GDR | 46.23 | 46.23 | |
| Martin Weppler |  FRG | 46.32 | 46.32 | 
| Order / Lane | ATHLETE | COUNTRY | PB | SB 1983 | 
|---|---|---|---|---|
| Bert Cameron |  JAM | 46.11 | 46.11 | |
| Darren Clark |  AUS | 46.26 | 46.26 | |
| Isidro Del Prado |  PHI | 46.92 | 46.92 | |
| Matti Rusanen |  FIN | 47.37 | 47.37 | |
| Erwin Skamrahl |  FRG | 44.50 | 44.50 | |
| Gerson A. Souza |  BRA | 46.43 | 46.43 | |
| Eliot Tabron |  USA | 46.68 | 46.68 | |
| Gabriel Tiacoh |  CIV | 46.94 | 47.11 | 
| Order / Lane | ATHLETE | COUNTRY | PB | SB 1983 | 
|---|---|---|---|---|
| Marcel Arnold |  SUI | 47.44 | 47.44 | |
| James Atuti |  KEN | 46.95 | 46.95 | |
| Douglas Hinds |  CAN | 46.64 | 46.64 | |
| Moses Kyeswa |  UGA | 46.35 | 46.35 | |
| Michael Paul |  TTO | 46.33 | 46.33 | |
| Oddur Sigurdsson |  ISL | 47.09 | 47.09 | |
| Susumu Takano |  JPN | 46.66 | 46.66 | |
| Hartmut Weber |  FRG | 44.72 | 45.74 | 
| Order / Lane | ATHLETE | COUNTRY | PB | SB 1983 | 
|---|---|---|---|---|
| Todd Bennett |  GBR | 46.58 | 46.58 | |
| Héctor Daley |  PAN | 45.29 | 47.19 | |
| Hassan El Kashief |  SUD | 44.76 | 46.61 | |
| Eric Josjö |  SWE | 45.63 | 47.25 | |
| Viktor Markin |  URS | 44.60 | 46.74 | |
| Sunder Nix |  USA | 44.68 | 46.19 | |
| Ján Tomko |  TCH | 45.64 | 45.64 | |
| Sándor Vasvári |  HUN | 46.69 | 46.69 |