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 (butterfly, backstroke, breaststroke, and freestyle), and as such is only recognized in short course (25m) pools.
| # | Time | Name | Nationality | Date | Meet | Location | Ref | |
|---|---|---|---|---|---|---|---|---|
| 1 | 54.66 | Josef Hladky | 16 March 1991 | World Cup | Bonn, Germany | [1] | ||
| 2 | 53.78 | Jani Sievinen | 21 November 1992 | European Championships | Espoo, Finland | [2] | ||
| 2 | 53.78 | = | Jani Sievinen | 24 January 1996 | World Cup | Sheffield, United Kingdom | [3] | |
| 3 | 53.10 | Jani Sievinen | 30 January 1996 | World Cup | Malmö, Sweden | [2] | ||
| 4 | 52.79 | Neil Walker | 18 March 2000 | World Championships | Athens, Greece | [4] | ||
| 5 | 52.63 | sf | Peter Mankoč | 15 December 2001 | European Championships | Antwerp, Belgium | [5] | |
| 6 | 52.58 | Thomas Rupprath | 25 January 2003 | World Cup | Berlin, Germany | [6] | ||
| 7 | 52.51 | Roland Schoeman | 18 January 2005 | World Cup | Stockholm, Sweden | [7] | ||
| 8 | 52.11 | Ryk Neethling | 22 January 2005 | World Cup | Berlin, Germany | [8] | ||
| 9 | 52.01 | Ryk Neethling | 26 January 2005 | World Cup | Moscow, Russia | |||
| 10 | 51.52 | Ryk Neethling | 11 February 2005 | World Cup | East Meadow, NY, United States | [9] | ||
| 11 | 51.25 | sf | Ryan Lochte | 12 April 2008 | World Championships | Manchester, United Kingdom | [10] | |
| 12 | 51.15 | Ryan Lochte | 13 April 2008 | World Championships | Manchester, United Kingdom | [11] | ||
| 13 | 50.95 | h | Sergey Fesikov | 14 November 2009 | World Cup | Berlin, Germany | [12] | |
| 14 | 50.76 | sf | Peter Mankoč | 12 December 2009 | European Championships | Istanbul, Turkey | [13] | |
| 15 | 50.71 | sf | Ryan Lochte | 15 December 2012 | World Championships | Istanbul, Turkey | [14] | |
| 16 | 50.66 | Markus Deibler | 7 December 2014 | World Championships | Doha, Qatar | [15] | ||
| 17 | 50.60 | Vladimir Morozov | 26 August 2016 | World Cup | Chartres, France | [16] | ||
| 18 | 50.30 | Vladimir Morozov | 30 August 2016 | World Cup | Berlin, Germany | [17] | ||
| 19 | 50.26 | Vladimir Morozov | 28 September 2018 | World Cup | Eindhoven, Netherlands | [18] | ||
| 19 | 50.26 | = | Vladimir Morozov | 9 November 2018 | World Cup | Tokyo, Japan | [19] | |
| 20 | 49.88 | Caeleb Dressel | 16 November 2020 | International Swimming League | Budapest, Hungary | [20] | ||
| 21 | 49.28 | Caeleb Dressel | 22 November 2020 | International Swimming League | Budapest, Hungary | [21] |
| # | Time | Name | Nationality | Date | Meet | Location | Ref | |
|---|---|---|---|---|---|---|---|---|
| WB | 1:02.75 | Marion Zoller | 30 March 1991 | World Cup | Sheffield, United Kingdom | |||
| 1 | 1:01.61 | Lin Li | 29 February 1992 | World Cup | Palma de Mallorca, Spain | |||
| 2 | 1:01.03 | Louise Karlsson | 22 November 1992 | European Championships | Espoo, Finland | |||
| 2 | 1:01.03 | = | Louise Karlsson | 26 January 1997 | World Cup | Malmö, Sweden | [22] | |
| 3 | 1:00.60 | Hu Xiaowen | 26 February 1998 | World Cup | Beijing, China | [23] | ||
| 4 | 1:00.43 | Martina Moravcová | 12 December 1998 | European Championships | Sheffield, United Kingdom | [24] | ||
| 5 | 1:00.41 | Jenny Thompson | 16 January 1999 | World Cup | Sydney, Australia | [25] | ||
| 6 | 1:00.35 | h | Martina Moravcová | 2 April 1999 | World Championships | Hong Kong, China | [26] | |
| 7 | 59.30 | h | Jenny Thompson | 2 April 1999 | World Championships | Hong Kong, China | [26] | |
| 8 | 58.80 | Natalie Coughlin | 23 November 2002 | World Cup | East Meadow, NY, United States | [27] | ||
| 9 | 58.54 | Emily Seebohm | 10 August 2009 | Australian Championships | Hobart, Australia | [28] | ||
| 10 | 58.51 | h | Therese Alshammar | 17 October 2009 | World Cup | Durban, South Africa | [29] | |
| 11 | 58.40 | Zhao Jing | 11 November 2009 | World Cup | Stockholm, Sweden | [30] | ||
| 12 | 57.74 | Hinkelien Schreuder | 15 November 2009 | World Cup | Berlin, Germany | [31] | ||
| 13 | 57.73 | h | Katinka Hosszú | 8 August 2013 | World Cup | Eindhoven, Netherlands | [32] | |
| 14 | 57.50 | Katinka Hosszú | 8 August 2013 | World Cup | Eindhoven, Netherlands | |||
| 15 | 57.45 | h | Katinka Hosszú | 11 August 2013 | World Cup | Berlin, Germany | ||
| 16 | 57.25 | h | Katinka Hosszú | 28 August 2014 | World Cup | Doha, Qatar | ||
| 17 | 56.86 | h | Katinka Hosszú | 1 September 2014 | World Cup | Dubai, United Arab Emirates | [33] | |
| 18 | 56.70 | Katinka Hosszú | 5 December 2014 | World Championships | Doha, Qatar | [34] | ||
| 19 | 56.67 | Katinka Hosszú | 4 December 2015 | European Championships | Netanya, Israel | [35] | ||
| 20 | 56.51 | Katinka Hosszú | 7 August 2017 | World Cup | Berlin, Germany | [36] | ||
| 21 | 55.98 | tt | Gretchen Walsh | 18 October 2024 | Florida vs Virginia Dual Meet | Charlottesville, United States | [37] | |
| 22 | 55.71 | sf | Gretchen Walsh | 12 December 2024 | World Championships | Budapest, Hungary | [38] | |
| 23 | 55.11 | Gretchen Walsh | 13 December 2024 | World Championships | Budapest, Hungary | [39] |
| Tables show data for two definitions of "Top 25" - the top 25 100 m individual medley times and the top 25 athletes: |
| - denotes top performance for athletes in the top 25 100 m individual medley times |
| - denotes lesser performances, still in the top 25 100 m individual medley times, by repeat athletes |
| - denotes top performance (only) for other top 25 athletes who fall outside the top 25 100 m individual medley times |
| Ath.# | Perf.# | Time | Athlete | Nation | Date | Place | Ref. |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 49.28 | Caeleb Dressel | 22 November 2020 | Budapest | [21] | |
| 2 | 49.88 | Dressel #2 | 16 November 2020 | Budapest | [20] | ||
| 2 | 3 | 49.92 | Léon Marchand | 31 October 2024 | Singapore | [41] | |
| 3 | 4 | 50.26 | Vladimir Morozov | 28 September 2018 | Eindhoven | [18] | |
| 9 November 2018 | Tokyo | [19] | |||||
| 4 | 6 | 50.28 | Shaine Casas | 23 October 2025 | Toronto | [42] | |
| 7 | 50.30 | Morozov #3 | 30 August 2016 | Berlin | [17] | ||
| 8 | 50.31 | Morozov #4 | 15 November 2018 | Singapore | [43] | ||
| 9 | 50.32 | Morozov #5 | 4 October 2018 | Budapest | [44] | ||
| 10 | 50.33 | Morozov #6 | 29 October 2016 | Hong Kong | [45] | ||
| 5 | 10 | 50.33 | Noè Ponti | 13 December 2024 | Budapest | [46] | |
| 12 | 50.36 | Morozov #7 | 11 November 2017 | Beijing | [47] | ||
| 13 | 50.39 | Ponti #2 | 31 October 2024 | Singapore | [41] | ||
| 14 | 50.43 | Ponti #3 | 12 December 2024 | Budapest | [48] | ||
| 15 | 50.45 | Casas #2 | 17 October 2025 | Westmont | [49] | ||
| 16 | 50.48 | Dressel #3 | 10 November 2020 | Budapest | [50] | ||
| 17 | 50.49 | Morozov #8 | 18 November 2017 | Singapore | [51] | ||
| 18 | 50.55 | Morozov #9 | 25 October 2016 | Tokyo | [52] | ||
| 6 | 19 | 50.56 | Maxime Grousset | 23 October 2025 | Taverny | [53] | |
| Hubert Kós | 23 October 2025 | Toronto | [42] | ||||
| 21 | 50.60 | Morozov #10 | 26 August 2016 | Chartres | [16] | ||
| 8 | 22 | 50.63 | Kliment Kolesnikov | 14 December 2018 | Hangzhou | [54] | |
| 23 | 50.64 | Ponti #4 | 13 April 2025 | Uster | [55] | ||
| 24 | 50.65 | Marchand #2 | 18 October 2024 | Shanghai | [56] | ||
| 9 | 25 | 50.66 | Markus Deibler | 7 December 2014 | Doha | [15] | |
| 25 | 50.66 | Ponti #5 | 18 October 2024 | Shanghai | [56] | ||
| 10 | 50.71 | Ryan Lochte | 15 December 2012 | Istanbul | [14] | ||
| 11 | 50.76 | Peter Mankoč | 12 December 2009 | Istanbul | [13] | ||
| 12 | 50.95 | Sergei Fesikov | 14 November 2009 | Berlin | [12] | ||
| Marco Orsi | 7 November 2021 | Kazan | [57] | ||||
| 14 | 50.96 | Florent Manaudou | 7 December 2013 | Dijon | [58] | ||
| 15 | 50.97 | Thomas Ceccon | 16 December 2022 | Melbourne | [59] | ||
| 16 | 51.05 | Gerhard Zandberg | 14 November 2009 | Berlin | [60] | ||
| Javier Acevedo | 16 December 2022 | Melbourne | [59] | ||||
| Finlay Knox | 23 October 2025 | Toronto | [42] | ||||
| 19 | 51.07 | Grant House | 17 October 2025 | Westmont | [49] | ||
| 20 | 51.11 | Bernhard Reitshammer | 13 December 2024 | Budapest | [46] | ||
| 21 | 51.14 | Marcin Cieślak | 16 November 2020 | Budapest | [20] | ||
| Emre Sakçı | 23 December 2023 | Istanbul | [61] | ||||
| Duncan Scott | 18 October 2024 | Shanghai | [56] | ||||
| 24 | 51.15 | George Bovell | 7 August 2013 | Eindhoven | [62] | ||
| 25 | 51.16 | Michael Andrew | 15 November 2018 | Singapore | [43] |
| Ath.# | Perf.# | Time | Athlete | Nation | Date | Place | Ref. |
|---|---|---|---|---|---|---|---|
| 1 | 1 | 55.11 | Gretchen Walsh | 13 December 2024 | Budapest | [39] | |
| 2 | 55.71 | Walsh #2 | 12 December 2024 | Budapest | [38] | ||
| 3 | 55.77 | Walsh #3 | 17 October 2025 | Westmont | [64] | ||
| 4 | 55.91 | Walsh #4 | 10 October 2025 | Carmel | [65] | ||
| 5 | 55.98 | Walsh #5 | 18 October 2024 | Charlottesville | [37] | ||
| 6 | 55.99 | Walsh #6 | 23 October 2025 | Toronto | [66] | ||
| 7 | 56.06 | Walsh #7 | 12 December 2024 | Budapest | [67] | ||
| 2 | 8 | 56.34 | Kate Douglass | 10 October 2025 | Carmel | [65] | |
| 9 | 56.42 | Douglass #2 | 17 October 2025 | Westmont | [64] | ||
| 10 | 56.49 | Douglass #3 | 13 December 2024 | Budapest | [39] | ||
| 3 | 11 | 56.51 | Katinka Hosszú | 7 August 2017 | Berlin | [36] | |
| 12 | 56.57 | Douglass #4 | 31 October 2024 | Singapore | [68] | ||
| 13 | 56.67 | Hosszú #2 | 4 December 2015 | Netanya | [35] | ||
| 4 | 13 | 56.67 | Béryl Gastaldello | 13 December 2024 | Budapest | [39] | |
| 15 | 56.70 | Hosszú #3 | 5 December 2014 | Doha | [34] | ||
| 16 | 56.75 | Hosszú #4 | 14 December 2017 | Copenhagen | [69] | ||
| 17 | 56.86 | Hosszú #5 | 1 September 2014 | Dubai | [33] | ||
| 18 | 56.88 | Douglass #5 | 12 December 2024 | Budapest | [38] | ||
| 19 | 56.97 | Hosszú #6 | 1 October 2017 | Hong Kong | [70] | ||
| Hosszú #7 | 15 December 2017 | Copenhagen | [71] | ||||
| Douglass #6 | 24 October 2024 | Incheon | [72] | ||||
| 22 | 56.98 | Douglass #7 | 12 December 2024 | Budapest | [67] | ||
| 23 | 56.99 | Hosszú #8 | 4 December 2014 | Doha | [73] | ||
| Hosszú #9 | 7 August 2017 | Berlin | [74] | ||||
| Douglass #8 | 18 October 2024 | Shanghai | [75] | ||||
| 5 | 57.04 | Mary-Sophie Harvey | 13 December 2024 | Budapest | [39] | ||
| 6 | 57.10 | Sarah Sjöström | 2 August 2017 | Moscow | [76] | ||
| 7 | 57.32 | Marrit Steenbergen | 23 October 2025 | Toronto | [66] | ||
| 8 | 57.41 | Roos Vanotterdijk | 17 October 2025 | Westmont | [64] | ||
| 9 | 57.44 | Yu Yiting | 31 October 2024 | Singapore | [68] | ||
| 10 | 57.47 | Charlotte Bonnet | 7 December 2023 | Otopeni | [77] | ||
| 11 | 57.53 | Alicia Coutts | 10 November 2013 | Tokyo | [78] | ||
| Beata Nelson | 31 October 2024 | Singapore | [68] | ||||
| 13 | 57.59 | Siobhan-Marie O'Connor | 3 December 2015 | Netanya | [79] | ||
| Maria Kameneva | 6 December 2019 | Glasgow | [80] | ||||
| Anastasiya Shkurdai | 22 November 2020 | Budapest | [81] | ||||
| 16 | 57.68 | Rūta Meilutytė | 14 December 2013 | Herning | [82] | ||
| Louise Hansson | 16 December 2022 | Melbourne | [83] | ||||
| 18 | 57.69 | Rebecca Meder | 12 December 2024 | Budapest | [38] | ||
| Tessa Giele | 13 December 2024 | Budapest | [39] | ||||
| 20 | 57.74 | Hinkelien Schreuder | 15 November 2009 | Berlin | [31] | ||
| 21 | 57.75 | Rikako Ikee | 15 November 2017 | Tokyo | [84] | ||
| 22 | 57.76 | Kaylee McKeown | 18 October 2024 | Shanghai | [75] | ||
| 23 | 57.77 | Runa Imai | 14 December 2018 | Hangzhou | [85] | ||
| 24 | 57.80 | Kayla Sanchez | 21 December 2018 | Lausanne | |||
| Anastasia Gorbenko | 19 December 2021 | Abu Dhabi | [86] |