| 100m Freestyle | 51.22 | TITUS Marcus |  USA | 17 Aug 2015 | San Antonio, Texas, United States |
| 100m Freestyle | 51.42 | TITUS Marcus | USA | 09 Aug 2011 | Coimbra, Portugal |
| 100m Freestyle | 52.19 | GERMANO Luca |  ITA | 09 Sep 2009 | Taipei, Taiwan |
| 100m Freestyle | 52.42 | GERMANO Luca | ITA | 09 Sep 2009 | Taipei, Taiwan |
| 100m Freestyle | 52.56 | GRIGOREV Dmitry |  RUS | 18 Jul 1997 | Copenhagen, Denmark |
| 100m Freestyle | 52.64 | KEALY John |  IRL | 17 Jul 1997 | Copenhagen, Denmark |
| 100m Freestyle | 52.66 | WILSON Stuart | USA | 13 Jul 1985 | Los Angeles, United States |
| 100m Freestyle | 54.59 | WILSON Stuart | USA | 13 Jul 1985 | Los Angeles, United States |
| 100m Freestyle | 54.67 | GERSHWIND Reed | USA | 13 Jul 1984 | Atlanta, United States |
| 100m Freestyle | 55.59 | GERSHWIND Reed | USA | 24 Jul 1981 | Köln, Germany |
| 100m Freestyle | 55.74 | FLOAT Jeffrey | USA | 18 Jul 1977 | Bucharest, Romania |
| 100m Freestyle | 56.1 | RICE Ronald | USA | 17 Nov 1975 | Maracaibo, Venezuela |
| 100m Freestyle | 57.3 | RICE Ronald | USA | 24 Jul 1973 | Malmö, Sweden |
| 100m Freestyle | 1:00.0 | SAVINSKY Frederick | USA | 10 Aug 1969 | Belgrade, Serbia |
| 100m Freestyle | 1:00.7 | LOCHKAREV Vladimir |  URS | 10 Aug 1969 | Belgrade, Serbia |
| 100m Freestyle | 59.4 | SAVINSKY Frederick | USA | 10 Aug 1969 | Belgrade, Serbia |
| 100m Freestyle | 1:01.4 | PETERSEN John |  DEN | 26 Aug 1967 | Oslo, Norway |
| 100m Freestyle | 1:01.5 | PETERSEN John | DEN | 24 Jul 1965 | Halsingborg, Sweden |
| 100m Freestyle | 1:01.8 | WöHLER Joachim |  FRG | 28 Jun 1965 | Washington, United States |
| 100m Freestyle | 1:02.1 | WöHLER Joachim | FRG | 28 Jun 1965 | Washington, United States |
| 100m Freestyle | 1:02.2 | PETERSEN John | DEN | 08 Aug 1961 | Helsinki, Finland |
| 100m Freestyle | 1:02.4 | TALMONE Emile |  FRA | 18 Jun 1932 | Marseille, France |
| 100m Freestyle | 1:06.0 | TALMONE Emile | FRA | 22 Aug 1931 | Nuremberg, Germany |
| 100m Freestyle | 1:08.2 | REUSCHKE Herbert |  GER | 12 Aug 1928 | Königsberg, Germany |
| 100m Freestyle | 1:31.4 | DE MARCHI Roberto | ITA | 12 Aug 1924 | Paris, France |