| 400m Freestyle | 04:21.27 | CRONK Carli |  USA | 14 May 2021 | Austin TX, United States |
| 400m Freestyle | 4:25.94 | TERENTEVA Viktoriia |  RUS | 24 Jul 2017 | Samsun, Turkiye |
| 400m Freestyle | 4:27.82 | TOVSTA Anna |  UKR | 07 Sep 2009 | Taipei, Taiwan |
| 400m Freestyle | 4:28.07 | LUTZ Elizabeth | USA | 29 Jul 1981 | Köln, Germany |
| 400m Freestyle | 4:30.95 | LUTZ Elizabeth | USA | 19 Jul 1980 | Cleveland, United States |
| 400m Freestyle | 4:45.60 | BARBER Laura | USA | 22 Jul 1977 | Bucharest, Romania |
| 400m Freestyle | 4:52.17 | BARBER Laura | USA | 22 Jul 1977 | Bucharest, Romania |
| 400m Freestyle | 4:57.97 | BARBER Laura | USA | 11 Jul 1976 | Southfield, United States |
| 400m Freestyle | 5:05.09 | HELM Theresa |  CAN | 30 May 1976 | Palm Springs, United States |
| 400m Freestyle | 5:11.3 | HELM Theresa | CAN | 23 May 1976 | Santa Barbara, United States |
| 400m Freestyle | 5:12.4 | ROBINSON Jo-Anne | CAN | 13 Aug 1969 | Belgrade, Serbia |
| 400m Freestyle | 5:21.8 | ASSENOVA Diana |  BUL | 13 Aug 1969 | Belgrade, Serbia |
| 400m Freestyle | 5:22.5 | ROBINSON Jo-Anne | CAN | 10 Aug 1968 | Hayward, United States |
| 400m Freestyle | 5:50.2 | ROBINSON Jo-Anne | CAN | 01 Jul 1965 | Washington, United States |
| 400m Freestyle | 5:57.2 | ROBINSON Jo-Anne | CAN | 30 Jun 1965 | Washington, United States |
| 400m Freestyle | 6:26.8 | KELETI Zsuzsanna |  HUN | 23 May 1965 | Budapest, Hungary |
| 400m Freestyle | 6:44.7 | ORSTROM Birgitta |  SWE | 24 Apr 1965 | Stockholm, Sweden |
| 400m Freestyle | 7:18.7 | SøRENSEN Edel |  DEN | 14 Aug 1949 | Copenhagen, Denmark |
| 400m Freestyle | 7:31.1 | SøRENSEN Edel | DEN | 20 Oct 1948 | Copenhagen, Denmark |
| 400m Freestyle | 7:52.5 | SøRENSEN Edel | DEN | 12 Feb 1946 | Copenhagen, Denmark |
| 400m Freestyle | 7:53.3 | SøRENSEN Edel | DEN | 22 Jan 1945 | Copenhagen, Denmark |
| 400m Freestyle | 7:59.4 | SøRENSEN Edel | DEN | 02 Jun 1943 | Copenhagen, Denmark |
| 400m Freestyle | 8:05.4 | THAMM Hedwig |  GER | 11 Nov 1939 | Berlin, Germany |