World record progression 100 metres individual medley
This is a listing of the history of the World Record in the swimming event: 100 Individual Medley. The event consists of one 25-meter lap of each stroke, and as such is only recognized in short course pools.
All-time top 25
Men
- Correct as of December 2025
| Time | Athlete | Nation | Date | Place | |||
| 1 | 1 | 49.28 | Caeleb Dressel | 22 November 2020 | Budapest | ||
| 2 | 49.88 | Dressel #2 | 16 November 2020 | Budapest | |||
| 2 | 3 | 49.92 | Léon Marchand | 31 October 2024 | Singapore | ||
| 3 | 4 | 50.26 | Vladimir Morozov | 28 September 2018 | Eindhoven | ||
| 3 | 4 | 50.26 | Vladimir Morozov | 9 November 2018 | Tokyo | ||
| 4 | 6 | 50.28 | Shaine Casas | 23 October 2025 | Toronto | ||
| 7 | 50.30 | Morozov #3 | 30 August 2016 | Berlin | |||
| 8 | 50.31 | Morozov #4 | 15 November 2018 | Singapore | |||
| 9 | 50.32 | Morozov #5 | 4 October 2018 | Budapest | |||
| 10 | 50.33 | Morozov #6 | 29 October 2016 | Hong Kong | |||
| 5 | 10 | 50.33 | Noè Ponti | 13 December 2024 | Budapest | ||
| 12 | 50.36 | Morozov #7 | 11 November 2017 | Beijing | |||
| 13 | 50.39 | Ponti #2 | 31 October 2024 | Singapore | |||
| 14 | 50.43 | Ponti #3 | 12 December 2024 | Budapest | |||
| 15 | 50.45 | Casas #2 | 17 October 2025 | Westmont | |||
| 16 | 50.48 | Dressel #3 | 10 November 2020 | Budapest | |||
| 17 | 50.49 | Morozov #8 | 18 November 2017 | Singapore | |||
| 18 | 50.52 | Ponti #4 | 4 December 2025 | Lublin | |||
| 6 | 19 | 50.53 | Maxime Grousset | 4 December 2025 | Lublin | ||
| 20 | 50.55 | Morozov #9 | 25 October 2016 | Tokyo | |||
| 21 | 50.56 | Grousset #2 | 23 October 2025 | Taverny | |||
| 7 | 21 | 50.56 | Hubert Kós | 23 October 2025 | Toronto | ||
| 23 | 50.60 | Morozov #10 | 26 August 2016 | Chartres | |||
| 8 | 24 | 50.63 | Kliment Kolesnikov | 14 December 2018 | Hangzhou | ||
| 25 | 50.64 | Ponti #5 | 13 April 2025 | Uster | |||
| 9 | 50.66 | Markus Deibler | 7 December 2014 | Doha | |||
| 10 | 50.71 | Ryan Lochte | 15 December 2012 | Istanbul | |||
| 11 | 50.76 | Peter Mankoč | 12 December 2009 | Istanbul | |||
| 12 | 50.95 | Sergei Fesikov | 14 November 2009 | Berlin | |||
| 12 | 50.95 | Marco Orsi | 7 November 2021 | Kazan | |||
| 14 | 50.96 | Florent Manaudou | 7 December 2013 | Dijon | |||
| 15 | 50.97 | Thomas Ceccon | 16 December 2022 | Melbourne | |||
| 16 | 51.05 | Gerhard Zandberg | 14 November 2009 | Berlin | |||
| 16 | 51.05 | Javier Acevedo | 16 December 2022 | Melbourne | |||
| 16 | 51.05 | Finlay Knox | 23 October 2025 | Toronto | |||
| 19 | 51.07 | Grant House | 17 October 2025 | Westmont | |||
| 20 | 51.11 | Bernhard Reitshammer | 13 December 2024 | Budapest | |||
| 21 | 51.14 | Marcin Cieślak | 16 November 2020 | Budapest | |||
| 21 | 51.14 | Emre Sakçı | 23 December 2023 | Istanbul | |||
| 21 | 51.14 | Duncan Scott | 18 October 2024 | Shanghai | |||
| 24 | 51.15 | George Bovell | 7 August 2013 | Eindhoven | |||
| 25 | 51.16 | Michael Andrew | 15 November 2018 | Singapore | |||
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Women
- Correct as of December 2025
| Time | Athlete | Nation | Date | Place | |||
| 1 | 1 | 55.11 | Gretchen Walsh | 13 December 2024 | Budapest | ||
| 2 | 55.71 | Walsh #2 | 12 December 2024 | Budapest | |||
| 3 | 55.77 | Walsh #3 | 17 October 2025 | Westmont | |||
| 4 | 55.91 | Walsh #4 | 10 October 2025 | Carmel | |||
| 5 | 55.98 | Walsh #5 | 18 October 2024 | Charlottesville | |||
| 6 | 55.99 | Walsh #6 | 23 October 2025 | Toronto | |||
| 7 | 56.06 | Walsh #7 | 12 December 2024 | Budapest | |||
| 2 | 8 | 56.26 | Marrit Steenbergen | 4 December 2025 | Lublin | ||
| 3 | 9 | 56.34 | Kate Douglass | 10 October 2025 | Carmel | ||
| 10 | 56.42 | Douglass #2 | 17 October 2025 | Westmont | |||
| 11 | 56.49 | Douglass #3 | 13 December 2024 | Budapest | |||
| 4 | 12 | 56.51 | Katinka Hosszú | 7 August 2017 | Berlin | ||
| 13 | 56.57 | Douglass #4 | 31 October 2024 | Singapore | |||
| 14 | 56.67 | Hosszú #2 | 4 December 2015 | Netanya | |||
| 5 | 14 | 56.67 | Béryl Gastaldello | 13 December 2024 | Budapest | ||
| 16 | 56.70 | Hosszú #3 | 5 December 2014 | Doha | |||
| 17 | 56.75 | Hosszú #4 | 14 December 2017 | Copenhagen | |||
| 6 | 18 | 56.80 | Roos Vanotterdijk | 4 December 2025 | Lublin | ||
| 19 | 56.86 | Hosszú #5 | 1 September 2014 | Dubai | |||
| 20 | 56.88 | Douglass #5 | 12 December 2024 | Budapest | |||
| 21 | 56.97 | Hosszú #6 | 1 October 2017 | Hong Kong | |||
| 21 | 56.97 | Hosszú #7 | 15 December 2017 | Copenhagen | |||
| 21 | 56.97 | Douglass #6 | 24 October 2024 | Incheon | |||
| 24 | 56.98 | Douglass #7 | 12 December 2024 | Budapest | |||
| 25 | 56.99 | Hosszú #8 | 4 December 2014 | Doha | |||
| 25 | 56.99 | Hosszú #9 | 7 August 2017 | Berlin | |||
| 25 | 56.99 | Douglass #8 | 18 October 2024 | Shanghai | |||
| 7 | 57.04 | Mary-Sophie Harvey | 13 December 2024 | Budapest | |||
| 8 | 57.10 | Sarah Sjöström | 2 August 2017 | Moscow | |||
| 9 | 57.17 | Anastasia Gorbenko | 4 December 2025 | Lublin | |||
| 10 | 57.44 | Yu Yiting | 31 October 2024 | Singapore | |||
| 11 | 57.47 | Charlotte Bonnet | 7 December 2023 | Otopeni | |||
| 12 | 57.53 | Alicia Coutts | 10 November 2013 | Tokyo | |||
| 12 | 57.53 | Beata Nelson | 31 October 2024 | Singapore | |||
| 14 | 57.59 | Siobhan-Marie O'Connor | 3 December 2015 | Netanya | |||
| 14 | 57.59 | Maria Kameneva | 6 December 2019 | Glasgow | |||
| 14 | 57.59 | Anastasiya Shkurdai | 22 November 2020 | Budapest | |||
| 17 | 57.68 | Rūta Meilutytė | 14 December 2013 | Herning | |||
| 17 | 57.68 | Louise Hansson | 16 December 2022 | Melbourne | |||
| 19 | 57.69 | Rebecca Meder | 12 December 2024 | Budapest | |||
| 19 | 57.69 | Tessa Giele | 13 December 2024 | Budapest | |||
| 21 | 57.74 | Hinkelien Schreuder | 15 November 2009 | Berlin | |||
| 22 | 57.75 | Rikako Ikee | 15 November 2017 | Tokyo | |||
| 23 | 57.76 | Kaylee McKeown | 18 October 2024 | Shanghai | |||
| 24 | 57.77 | Runa Imai | 14 December 2018 | Hangzhou | |||
| 25 | 57.80 | Kayla Sanchez | 21 December 2018 | Lausanne | |||
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