== Alletiders top-25, mænd ==
{| class="wikitable"
!Rang
!Tid
!Atlet
!Nation
!Dato
!Sted
!Kilde
|-
!1.
|43,03
|[[Wayde van Niekerk]]
|{{flagu|South Africa}}
|14. august 2016
|[[Estádio Olímpico João Havelange|Rio de Janeiro]]
|<ref name=Niekerk>{{cite web|title=Men's 400m Results|url=https://smsprio2016-a.akamaihd.net/_odf-documents/A/T/ATM004101_Results_2016_08_14_ff3d0a74_10b4_4382_91f3_8783d2c9311c.pdf|work=Rio 2016 official website|date=14. august 2016|access-date=15. august 2016|archive-date=20. september 2016|archive-url=https://web.archive.org/web/20160920130147/https://smsprio2016-a.akamaihd.net/_odf-documents/A/T/ATM004101_Results_2016_08_14_ff3d0a74_10b4_4382_91f3_8783d2c9311c.pdf|url-status=dead}}</ref>
|-
! 2.
| 43,18 || [[Michael Johnson (athlete)|Michael Johnson]] || {{USA}} || 26. august 1999 || [[Seville]] ||
|-
! 3.
| 43,29 || [[Butch Reynolds|Harry 'Butch' Reynolds]] || {{USA}} || 17. august 1988 || [[Zürich]] ||
|-
! 4.
| 43,45 || [[Jeremy Wariner]] || {{USA}} || 31, august 2007 || [[Osaka]] ||
|-
! 5.
| 43,50 || [[Quincy Watts]] || {{USA}} || 5. august 1992 || [[Barcelona]] ||
|-
!6.
|43,65
|[[LaShawn Merritt]]
|{{flagu|United States}}
|26. august 2015
|[[Beijing National Stadium|Beijing]]
|<ref name="autogeneret2">{{cite web|title=400m Results|url=http://www.iaaf.org/competitions/iaaf-world-championships/15th-iaaf-world-championships-4875/results/men/400-metres/final/result#resultheader|publisher=IAAF|date=26. august 2015|access-date=26. august 2015|archive-date=27. august 2015|archive-url=https://web.archive.org/web/20150827194650/http://www.iaaf.org/competitions/iaaf-world-championships/15th-iaaf-world-championships-4875/results/men/400-metres/final/result#resultheader|url-status=live}}</ref>
|-
!7.
|43,72
|[[Isaac Makwala]]
|{{flagu|Botswana}}
|5. juli 2015
|[[Stade de la Charrière|La Chaux-de-Fonds]]
|<ref>{{cite web|title=400m Results|url=http://www.sep-olympic.ch/resisprintdoc/400m3.pdf|publisher=www.sep-olympic.ch|date=5. juli 2015|access-date=5. juli 2015|archive-date=14. juli 2015|archive-url=https://web.archive.org/web/20150714102404/http://www.sep-olympic.ch/resisprintdoc/400m3.pdf|url-status=dead}}</ref>
|-
!8.
|43,74
|[[Kirani James]]
|{{flagu|Grenada}}
|3. juli 2014
|[[Lausanne]]
|<ref>{{Cite web |url=http://www.diamondleague-lausanne.com/en/Live-StartlistsResults/Overview/400m/ |title=Arkiveret kopi |access-date=27. december 2016 |archive-date= 8. juli 2014 |archive-url=https://web.archive.org/web/20140708001133/http://www.diamondleague-lausanne.com/en/Live-StartlistsResults/Overview/400m/ |url-status=dead }}</ref>
|-
! 9.
| 43,81 || [[Danny Everett]] || {{USA}} || 26. juni 1992 || [[New Orleans]] ||
|-
! 10.
| 43,86 A || [[Lee Evans (athlete)|Lee Evans]] || {{USA}} || 18. oktober 1968 || [[Mexico City]] ||
|-
! 11.
| 43,87 || [[Steve Lewis (athlete)|Steve Lewis]] || {{USA}} || 28. september 1988 || [[Seoul]] ||
|-
!rowspan=2|12.
|rowspan=2|43,93
|[[Yousef Ahmed Masrahi]] 
|{{flagu|Saudi Arabia}}
|23. august 2015
|[[Beijing National Stadium|Beijing]]
|<ref name=autogeneret1>{{cite web|title=400m Men - Heats Results|url=http://www.iaaf.org/competitions/iaaf-world-championships/15th-iaaf-world-championships-4875/results/men/400-metres/heats/result#resultheader|publisher=IAAF|date=23. august 2015|access-date=23. august 2015|archive-date=24. august 2015|archive-url=https://web.archive.org/web/20150824161657/http://www.iaaf.org/competitions/iaaf-world-championships/15th-iaaf-world-championships-4875/results/men/400-metres/heats/result#resultheader|url-status=live}}</ref>
|-
|[[Rusheen McDonald]] 
|{{flagu|Jamaica}}
|23. august 2015
|[[Beijing National Stadium|Beijing]]
|<ref name=autogeneret1 />
|-
! 14.
| 43,97 A || [[Larry James]] || {{USA}} || 18. oktober 1968 || [[Mexico City]] ||
|-
!15.
|44,01
|[[Machel Cedenio]]
|{{flagu|Trinidad og Tobago}}
|14. august 2016
|[[Estádio Olímpico João Havelange|Rio de Janeiro]]
|<ref name=Niekerk />
|-
! 16. 
| 44,05 || [[Angelo Taylor]] || {{USA}} || 23. juni 2007 || [[Indianapolis]] ||
|-
!rowspan=2|17.
|rowspan=2|44,09 
|| [[Alvin Harrison]] || {{USA}} || 19. juni 1996 || [[Atlanta]] ||
|-
|| [[Jerome Young]] || {{USA}} || 21. juni 1998 || [[New Orleans]] ||
|-
!19.
|44,10 || [[Gary Kikaya]] || {{flagu|Demokratiske Republik Congo}} || 9. september 2006 || [[Stuttgart]] ||
|-
!20.
|44,11
|[[Luguelín Santos]]
|{{flagu|Dominikanske Republik}}
|26. august 2015
|[[Beijing National Stadium|Beijing]] ||<ref name="autogeneret2" />
|-
! 21.
| 44,13 || [[Derek Mills]] || {{USA}} || 4. juni 1995 || [[Eugene, Oregon|Eugene]] ||
|-
! 22.
| 44,14 || [[Roberto Hernandez (athlete)|Roberto Hernandez]] || {{CUB}} || 30 May 1990 || [[Sevilla]] ||
|-
! 23.
| 44,15 || [[Anthuan Maybank]] || {{USA}} || 3. juli 1996 || [[Lausanne]] ||
|-
! 24.
| 44,16 || [[Otis Harris]] || {{USA}} || 23. august 2004 || [[Athen]] ||
|-
! 25.
| 44,17 || [[Innocent Egbunike]] || {{flagu|Nigeria}} || 19. august 1987 || [[Zürich]] ||
|}
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