| 400m Freestyle | 3:57.90 | FUJIHARA Satoi |  JPN | 20 Jul 2017 | Samsun, Turkiye |
| 400m Freestyle | 4:05.01 | PIORO Artur |  POL | 31 Jul 2013 | Sofia, Bulgaria |
| 400m Freestyle | 4:05.14 | GERMANO Luca |  ITA | 08 Sep 2009 | Taipei, Taiwan |
| 400m Freestyle | 4:07.17 | GERMANO Luca | ITA | 08 Sep 2009 | Taipei, Taiwan |
| 400m Freestyle | 4:07.46 | PARKIN Terence |  RSA | 08 Jan 2005 | Melbourne, Australia |
| 400m Freestyle | 4:08.47 | ROUSSEL Francis |  CAN | 18 Jul 1997 | Copenhagen, Denmark |
| 400m Freestyle | 4:13.03 | CERQUETTI Omar | ITA | 28 Jul 1993 | Sofia, Bulgaria |
| 400m Freestyle | 4:13.75 | WILSON Stuart |  USA | 14 Jul 1985 | Los Angeles, United States |
| 400m Freestyle | 4:16.13 | WILSON Stuart | USA | 27 Jul 1981 | Köln, Germany |
| 400m Freestyle | 4:21.69 | WILSON Stuart | USA | 26 Jul 1981 | Köln, Germany |
| 400m Freestyle | 4:31.20 | RICE Ronald | USA | 20 Jul 1977 | Bucharest, Romania |
| 400m Freestyle | 4:32.9 | RICE Ronald | USA | 22 Jul 1973 | Malmö, Sweden |
| 400m Freestyle | 4:45.1 | SAVINSKY Frederick | USA | 12 Aug 1969 | Belgrade, Serbia |
| 400m Freestyle | 4:49.3 | WALLA, JR. Albert | USA | 12 Aug 1969 | Belgrade, Serbia |
| 400m Freestyle | 4:56.2 | SAVINSKY Frederick | USA | 12 Aug 1969 | Belgrade, Serbia |
| 400m Freestyle | 4:56.5 | PETERSEN John |  DEN | 01 Jul 1965 | Washington, United States |
| 400m Freestyle | 4:57.2 | KOLLAR Laszlo |  HUN | 01 Jul 1965 | Washington, United States |
| 400m Freestyle | 4:59.9 | KOLLAR Laszlo | HUN | 09 Aug 1961 | Helsinki, Finland |
| 400m Freestyle | 5:12.7 | KOLLAR Laszlo | HUN | 27 Aug 1957 | Milan, Italy |
| 400m Freestyle | 5:42.0 | KAMERLING Servaas |  NED | 18 Aug 1953 | Brussels, Belgium |
| 400m Freestyle | 5:42.9 | KAMERLING Servaas | NED | 13 Aug 1949 | Copenhagen, Denmark |
| 400m Freestyle | 6:02.7 | PETERS Joachim |  GER | 26 Aug 1939 | Stockholm, Sweden |
| 400m Freestyle | 6:11.6 | WEISS Kurt | GER | 23 Aug 1935 | London, Great Britain |
| 400m Freestyle | 6:17.8 | WEISS Kurt | GER | 23 Aug 1931 | Nuremberg, Germany |
| 400m Freestyle | 7:02.2 | REUSCHKE Herbert | GER | 18 Aug 1928 | Amsterdam, Netherlands |