Swimming at the 2024 Summer Olympics – Women's 100 metre butterfly

Women's 100 metre butterfly at the Games of the XXXIII Olympiad
Venue	Olympic Aquatics Centre, Paris La Défense Arena
Dates	27 July 2024 (Heats and Semis) 28 July 2004 (Final)
Competitors	32

The women's 100 metre butterfly event at the 2024 Summer Olympics will be held from July 27 to July 28 2024 at the Paris Aquatics Centre.

Records

Prior to this competition, the existing records were as follows.

Record	Time	Name	Nation	Event	Date	Notes
World
Olympic

Qualification

Main article: Swimming at the 2024 Summer Olympics – Qualification

A National Olympic Committee (NOC) may enter a maximum of two qualified athletes in each individual event, but only if both of them have attained the Olympic Qualifying Time (OQT). One athlete per event can potentially enter if they meet the Olympic Consideration Time (OCT), or if the total quota of 852 athletes has not been targeted. NOCs may also permit swimmers regardless of time (one per gender) under a Universality place since they have no swimmers attaining either of the standard entry times (OQT/OCT).

Following the end of the qualification window, World Aquatics will assess the number of swimmers who have achieved the OQT, the number of relay-only swimmers, and the number of Universality places, before inviting those with OCT to fulfill the total quota of 852. Additionally, OCT places will be distributed by event according to the position of the World Aquatics Rankings during the qualifying deadline.

Time standards

The qualifying time standards must be obtained at the 2023 and 2024 World Championships, continental championships, continental swimming meets, national championships and selection trials, and various international meets approved by World Aquatics in the period between 1 March 2023 and 23 June 2024.

The following table outlines the qualifying time standards for Paris 2024 for this event:

Women's events
Event	OQT*	OCT^
100 m butterfly	57.92ª	58.21

* OQTs correspond to the time achieved by a fourteenth-place swimmer in his or her respective preliminary heat of each event at the previous Games.

ª Because the fourteenth-place swimmer achieved a standard slower than the OQT in Tokyo 2020, the OQT used at the previous Games will remain constant.

^ OCTs are derived by adding 0.5% of the OQT standard.

Competition format

The competition consists of three rounds: heats, semifinals, and a final. The swimmers with the best 16 times in the heats advance to the semifinals. The swimmers with the best 8 times in the semifinals advance to the final. Swim-offs are used as necessary to break ties for advancement to the next round.

Schedule

All times are Central European time (UTC+1)

Date	Time	Round
July 27 2024	10:00	Heats
	19:37	Semifinals
July 28 2024	17:30	Final

Results

Heats

Rank	Heat	Lane	Swimmer	Nation	Time	Notes
			Varsenik Manucharyan	Armenia
			Emma Mckeon	Australia
			Alexandria Perkins	Australia
			Roos Vanotterdijk	Belgium
			Lana Pudar	Bosnia and Herzegovina
			Margaret Macneil	Canada
			Rebecca Smith	Canada
			Yiting Yu	China
			Yufei Zhang	China
			Barbora Seemanova	Czech Republic
			Helena Rosendahl Bach	Denmark
			Laura Cabanes Garzas	Spain
			Marie Wattel	France
			Keanna Macinnes	Great Britain
			Ana Nizharadze	Georgia
			Angelina Kohler	Germany
			Georgia Damasioti	Greece
			Anna Ntountounaki	Greece
			Ellen Walshe	Ireland
			Costanza Cocconcelli	Italy
			Viola Scotto Di Carlo	Italy
			Mizuki Hirai	Japan
			Rikako Ikee	Japan
			Maria Victoria Schutzmeier	Nicaragua
			Tessa Giele	Netherlands
			Vanessa Hazel Ouwehand	New Zealand
			Luana Alonso	Paraguay
			Erin Gallagher	South Africa
			Oumy Diop	Senegal
			Louise Hansson	Sweden
			Hayley Hoy	Eswatini
			Torri Huske	United States
			Gretchen Walsh	United States

Semifinals

The swimmers with the best 8 times, regardless of heat, advanced to the final.

Rank	Heat	Lane	Swimmer	Nation	Time	Notes

Final

Rank	Lane	Swimmer	Nation	Time	Notes