List of junior world records in swimming
Girls
Legend: # – Record awaiting ratification by FINA; Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

List of junior world records in swimming

Section Title: Girls
Table Section Text: Legend: # – Record awaiting ratification by FINA; Records not set in finals: h – heat; sf – semifinal; r – relay 1st leg; rh – relay heat 1st leg; b – B final; † – en route to final mark; tt – time trial

Event	Time	Name	Nationality	Date	Meet	Location	Ref

50m freestyle	24.33	Rikako Ikee	Japan	17 September 2017	National Sports Festival of Japan	Matsuyama, Japan

50m freestyle	23.99	not ratified, fastest all-time junior	Cate Campbell	Australia	2 August 2009	World Championships	Rome, Italy

100m freestyle	52.70	Penny Oleksiak	Canada	11 August 2016	Olympic Games	Rio de Janeiro, Brazil

200m freestyle	1:56.12	Shen Duo	China	20 August 2014	Youth Olympic Games	Nanjing, China

200m freestyle	1:55.16	not ratified	Katie Ledecky	United States	7 August 2014	USA Championships	Irvine, United States

400m freestyle	3:58.37	Katie Ledecky	United States	23 August 2014	Pan Pacific Championships	Gold Coast, Australia

800m freestyle	8:11.00	Katie Ledecky	United States	22 June 2014	Woodlands Senior Invitational Meet	Shenandoah, United States

1500m freestyle	15:28.36	Katie Ledecky	United States	24 August 2014	Pan Pacific Championships	Gold Coast, Australia

50m backstroke	27.49	Minna Atherton	Australia	7 February 2016	Brisbane Sprint Championships	Brisbane, Australia

100m backstroke	58.83	Regan Smith	United States	28 July 2018	USA Championships	Irvine, United States

100m backstroke	58.33	not ratified, fastest all-time junior	Missy Franklin	United States	31 July 2012	Olympic Games	London, United Kingdom

200m backstroke	2:06.43	Regan Smith	United States	26 July 2018	USA Championships	Irvine, United States

200m backstroke	2:04.06	WR, not ratified, fastest all-time junior	Missy Franklin	United States	3 August 2012	Olympic Games	London, United Kingdom

50m breaststroke	29.86	WB	Rūta Meilutytė	Lithuania	27 August 2013	World Junior Championships	Dubai, United Arab Emirates

50m breaststroke	29.48	not ratified, fastest all-time junior	Rūta Meilutytė	Lithuania	3 August 2013	World Championships	Barcelona, Spain

100m breaststroke	1:05.39	Rūta Meilutytė	Lithuania	20 August 2014	Youth Olympic Games	Nanjing, China

100m breaststroke	1:05.21	not ratified	Rūta Meilutytė	Lithuania	10 August 2014	British Championships	Sheffield, United Kingdom

100m breaststroke	1:04.35	not ratified, fastest all-time junior	Rūta Meilutytė	Lithuania	29 July 2013	World Championships	Barcelona, Spain

200m breaststroke	2:19.64	Viktoriya Zeynep Gunes	Turkey	30 August 2015	World Junior Championships	Singapore, Singapore

50m butterfly	25.46	Rikako Ikee	Japan	26 August 2017	World Junior Championships	Indianapolis, United States

100m butterfly	56.46	Penny Oleksiak	Canada	7 August 2016	Olympic Games	Rio de Janeiro, Brazil

100m butterfly	56.06	not ratified, fastest all-time junior	Sarah Sjöström	Sweden	27 July 2009	World Championships	Rome, Italy

200m butterfly	2:06.29	Suzuka Hasegawa	Japan	15 April 2017	Japanese Championships	Nagoya, Japan

200m butterfly	2:04.72	not ratified, fastest all-time junior	Jiao Liuyang	China	14 August 2008	Olympic Games	Beijing, China

200m individual medley	2:09.98	Rikako Ikee	Japan	29 January 2017	Tokyo Championships	Tokyo, Japan

200m individual medley	2:07.57	not ratified, fastest all-time junior	Ye Shiwen	China	31 July 2012	Olympic Games	London, United Kingdom

400m individual medley	4:39.01	Rosie Rudin	Great Britain	25 August 2015	World Junior Championships	Singapore

400m individual medley	4:35.69	not ratified	Zhou Min	China	14 May 2014	Chinese Championships	Qingdao, China

400m individual medley	4:28.43	not ratified, fastest all-time junior	Ye Shiwen	China	28 July 2012	Olympic Games	London, United Kingdom

4×100m freestyle relay	3:36.19	(53.63)Taylor Ruck (53.70)Penny Oleksiak (54.65)Rebecca Smith (54.21)Kayla Sanchez	Canada	27 August 2017	World Junior Championships	Indianapolis, United States

4×200m freestyle relay	7:51.47	(1:59.01)Kayla Sanchez (1:56.86)Penny Oleksiak (1:58.66)Rebecca Smith (1:56.94)Taylor Ruck	Canada	23 August 2017	World Junior Championships	Indianapolis, United States

4×100m medley relay	3:58.38	(1:00.68)Jade Hannah (1:07.86)Faith Knelson (56.91)Penny Oleksiak (52.93)Taylor Ruck	Canada	28 August 2017	World Junior Championships	Indianapolis, United States

Sentence(s)

Penny Oleksiak participated in the 100 m butterfly, gaining a world junior record.

final_sentence: Penny Oleksiak participated in the 100 m butterfly, gaining a world junior record.