400 metres Freestyle, Men
Participants
| Nr. | Athlete | NOC |
|---|---|---|
| 1 | Edmund Pader |  AUT |
| 2 | Franz Seltenheim | AUT |
| 3 | Edmund Cooper |  BER |
| 4 | João Havelange |  BRA |
| 5 | Aluizio Lage | BRA |
| 6 | Manoel Villar | BRA |
| 7 | Bob Hamerton |  CAN |
| 8 | Robert Hooper | CAN |
| 9 | Bob Pirie | CAN |
| 10 | Washington Guzmán |  CHI |
| 11 | Aage Hellstrøm |  DEN |
| 12 | Jørgen Jørgensen | DEN |
| 13 | Poul Petersen | DEN |
| 14 | Heikki Hietanen |  FIN |
| 15 | Jean Taris |  FRA |
| 16 | Bobby Leivers |  GBR |
| 17 | Willie Pearson | GBR |
| 18 | Norman Wainwright | GBR |
| 19 | Heinz Arendt |  GER |
| 20 | Hans Freese | GER |
| 21 | Otto Przywara | GER |
| 22 | István Angyal |  HUN |
| 23 | Ödön Gróf | HUN |
| 24 | Árpád Lengyel | HUN |
| 25 | Shozo Makino |  JPN |
| 26 | Hiroshi Negami | JPN |
| 27 | Shunpei Uto | JPN |
| 28 | Piet Stam |  NED |
| 29 | Walter Ledgard Jiménez |  PER |
| 30 | Hans Brenner |  SUI |
| 31 | Werner Lehmann | SUI |
| 32 | Ralph Flanagan |  USA |
| 33 | John Macionis | USA |
| 34 | Jack Medica | USA |
Non-starters
| Nr. | Athlete | NOC |
|---|---|---|
| 1 | Günther Zobernig | AUT |
| 2 | Dudley Spurling | BER |
| 3 | Chen Zhenxiang |  CHN |
| 4 | Qadri Mahmud |  EGY |
| 5 | Egon Roolaid |  EST |
| 6 | Panagiotis Provatopoulos |  GRE |
| 7 | Roger Zirilli | SUI |