| 548 | Na'Asha Robinson |  | 51.30 | | 18 jun 2021 | Hayward Field, Eugene, OR (USA) |
| 548 | Megan Mcginnis | | 51.30 | | 8 jun 2023 | Mike A. Myers Stadium, Austin, TX (USA) |
| 548 | Ellie Beer |  | 51.30 | | 21 jun 2025 | Centre sportif Bout-du-Monde, Genève (SUI) |
| 548 | Dianna Proctor |  | 51.30 | | 22 jun 2025 | Alumni Stadium, London (CAN) |
| 548 | Anna Gryc |  | 51.30 | | 5 jul 2025 | Golęcin Stadion, Poznan (POL) |
| 556 | Kaelyaah Liburd |  | 51.31 | | 31 may 2025 | University of North Florda Jax Track at Hodges Stadium, Jacksonville, FL (USA) |
| 556 | Sharon Dabney | | 51.31 | | 10 jun 1978 | Westwood, CA (USA) |
| 556 | Virna De Angeli |  | 51.31 | | 17 jun 1997 | Bari (ITA) |
| 556 | Patrycja Wyciszkiewicz | | 51.31 | | 24 ago 2015 | National Stadium, Beijing (CHN) |
| 556 | Naledi Lopang |  | 51.31 | | 26 may 2023 | National Stadium, Gaborone (BOT) |
| 556 | Aaliyah Pyatt | | 51.31 | | 29 may 2025 | Cushing Stadium, College Station, TX (USA) |
| 562 | Meleni Rodney |  | 51.32 | | 16 may 2021 | Katherine B. Loker Stadium, Los Angeles, CA (USA) |
| 562 | Kiah Williams | | 51.32 | | 13 abr 2024 | Percy Beard Track, Gainesville, FL (USA) |
| 562 | Darya Terekhova |  | 51.32 | | 23 jul 2009 | Cheboksary (RUS) |
| 562 | Elexis Guster | | 51.32 | | 14 may 2017 | Eugene, OR (USA) |
| 562 | Claudine Williams |  | 51.32 | | 5 ago 1995 | Ullevi Stadium, Göteborg (SWE) |
| 562 | Anita Protti |  | 51.32 | | 15 jun 1990 | Genève (SUI) |
| 562 | Pepa Pavlova |  | 51.32 | | 11 ago 1986 | Budapest (HUN) |
| 569 | Zaya Akins | | 51.33 | | 25 may 2024 | Un. of Kentucky Outdoor Track Facility, Lexington, KY (USA) |
| 569 | Molly Killingbeck | | 51.33 | | 11 jun 1983 | Calgary (CAN) |
| 571 | Lee Naylor | | 51.35 | | 9 may 1998 | Osaka (JPN) |
| 571 | Ester Goossens |  | 51.35 | | 6 jun 1998 | Malmö (SWE) |
| 571 | Fanfang Bu |  | 51.35 | | 18 nov 2001 | Guangzhou (CHN) |
| 571 | Anabel Medina Ventura |  | 51.35 | | 11 may 2024 | Pista de Atletismo da Universidade Federal do Mato Grosso, Cuiaba (BRA) |
| 571 | Takyera Roberson | | 51.35 | | 24 jun 2017 | Sacramento, CA (USA) |
| 571 | Eva Santidrián |  | 51.35 | | 28 jun 2025 | Pistas Universad de León, León (ESP) |
| 577 | Christine Marquardt |  | 51.36 | | 2 jul 1978 | Leipzig (GER) |
| 577 | Catherine Murphy |  | 51.36 | | 27 jul 2002 | Manchester (GBR) |
| 577 | Robin Reynolds | | 51.36 | | 11 jun 2014 | Eugene, OR (USA) |
| 577 | Margaret Vanessa Barrie |  | 51.36 | | 13 may 2018 | Bloomington, IN (USA) |
| 577 | Amy Allcock | | 51.36 | | 22 jul 2018 | Olympic Stadium, London (GBR) |
| 582 | Mercedes Álvarez |  | 51.37 | | 4 jun 1983 | Bucureşti (ROU) |
| 582 | Maria de Lurdes Mutola |  | 51.37 | | 2 ago 1994 | Stade Louis II, Monaco (MON) |
| 582 | Daye Shon Roberson | | 51.37 | | 29 may 2015 | Austin, TX (USA) |
| 582 | June Griffith |  | 51.37 | | 19 may 1979 | Durham, NC (USA) |
| 586 | Lyubov Gurina | | 51.38 | | 10 jun 1983 | Moskva (URS) |
| 586 | Inez Turner-Gray | | 51.38 | | 27 jun 1996 | Kingston (JAM) |
| 586 | Lilla Mcmillan | | 51.38 | | 15 may 2016 | Orlando, FL (USA) |
| 586 | Yelena Vinogradova-Petushinskaya | | 51.38 | | 6 jul 1990 | Kiev (URS) |
| 590 | Ebony Eutsey | | 51.39 | | 11 jun 2016 | Kingston (JAM) |
| 590 | Alicja Wrona-Kutrzepa | | 51.39 | | 5 jul 2025 | Golęcin Stadion, Poznan (POL) |
| 590 | Nancy Mcleon | | 51.39 | | 5 ago 1995 | Ullevi Stadium, Göteborg (SWE) |
| 590 | Racheal Nachula |  | 51.39 | | 2 may 2008 | Addis Ababa (ETH) |
| 590 | Carol Rodríguez |  | 51.39 | | 3 may 2008 | Los Angeles, CA (USA) |
| 590 | Ajoke Odumosu |  | 51.39 | | 15 ago 2008 | National Stadium, Beijing (CHN) |
| 590 | Margaret Nyairera Wambui |  | 51.39 | | 28 may 2016 | Nairobi (KEN) |
| 590 | Georganne Moline | | 51.39 | | - | - |
| 598 | Titania Markland | | 51.40 | | 13 may 2018 | Bloomington, IN (USA) |
| 598 | Maureen Jelagat Maiyo | | 51.40 | | 24 ago 2015 | National Stadium, Beijing (CHN) |
| 598 | Verona Elder | | 51.40 | | 22 may 1976 | Kiev (URS) |
