| 400m Individual Medley | 4:16.92 | PARKIN Terence |  RSA | 17 Sep 2000 | Sydney, Australia |
| 400m Individual Medley | 4:18.14 | PARKIN Terence | RSA | 17 Sep 2000 | Sydney, Australia |
| 400m Individual Medley | 4:24.58 | PARKIN Terence | RSA | 13 Sep 1998 | Kuala Lumpur, Malaysia |
| 400m Individual Medley | 4:34.89 | ROUSSEL Francis |  CAN | 26 Jan 1996 | Quebec, Canada |
| 400m Individual Medley | 4:40.90 | CERQUETTI Omar |  ITA | 19 Mar 1992 | Florence, Italy |
| 400m Individual Medley | 4:47.97 | JOHNSON Alastair |  GBR | 22 Jul 1986 | London, Great Britain |
| 400m Individual Medley | 4:48.61 | WILSON Stuart |  USA | 12 Jul 1985 | Los Angeles, United States |
| 400m Individual Medley | 4:48.99 | WILSON Stuart | USA | 12 Jul 1985 | Los Angeles, United States |
| 400m Individual Medley | 4:49.74 | GERSHWIND Reed | USA | 25 Jul 1981 | Köln, Germany |
| 400m Individual Medley | 4:56.76 | FLOAT Jeffrey | USA | 19 Jul 1977 | Bucharest, Romania |
| 400m Individual Medley | 5:01.70 | FLOAT Jeffrey | USA | 19 Jul 1977 | Bucharest, Romania |
| 400m Individual Medley | 5:01.98 | FLOAT Jeffrey | USA | 11 Jul 1976 | Southfield, United States |
| 400m Individual Medley | 5:22.8 | CLARKSON Philip | USA | 24 Jul 1973 | Malmö, Sweden |
| 400m Individual Medley | 5:33.5 | TRUMBLE, JR. Ronald | USA | 12 Aug 1969 | Belgrade, Serbia |
| 400m Individual Medley | 5:33.9 | TRUMBLE, JR. Ronald | USA | 12 Aug 1969 | Belgrade, Serbia |
| 400m Individual Medley | 5:41.5 | TRUMBLE, JR. Ronald | USA | 10 Aug 1968 | Hayward, United States |
| 400m Individual Medley | 5:54.9 | LINDSJö Christer |  SWE | 07 Aug 1968 | Hemmeslöv, Sweden |
| 400m Individual Medley | 6:11.9 | PETERSEN Franciscus |  NED | 26 Jun 1968 | Amsterdam, Netherlands |