The women's 100 metre butterfly competition at the 2023 World Aquatics Championships was held on 23 and 24 July 2023.

Records Prior to the competition, the existing world and championship records were as follows.

Results Heats The heats were started on 23 July at 11:21.

Rank Heat Lane Name Nationality Time Notes 1 3 5 Zhang Yufei Q 2 4 5 Emma McKeon Q 3 5 6 Angelina Köhler Q 4 5 3 Louise Hansson Q 5 5 5 Maggie Mac Neil Q 6 5 4 Torri Huske Q 7 3 3 Wang Yichun Q 8 3 4 Gretchen Walsh Q 9 4 3 Brianna Throssell Q 10 4 6 Lana Pudar Q 11 4 4 Marie Wattel Q 12 4 7 Anna Ntountounaki Q 13 3 6 Ai Soma Q 14 3 0 Amina Kajtaz Q, NR 15 4 8 Helena Rosendahl Bach Q 16 3 2 Katerine Savard Q 17 4 2 Rikako Ikee 18 4 1 Ilaria Bianchi 19 5 2 Farida Osman 20 5 1 Keanna Macinnes 21 3 1 Paulina Peda 22 5 0 Barbora Seemanová 23 5 7 Giovanna Diamante 24 3 7 Ellen Walshe 25 3 8 Quah Jing Wen 26 5 8 Hazel Ouwehand 27 4 0 Paula Juste 28 3 9 Park Su-jin 1:00.20 29 2 3 Trinity Hearne 1:00.27 30 4 9 Zsuzsanna Jakabos 1:00.51 31 2 5 Laura Lahtinen 1:00.56 32 5 9 Athena Meneses 1:00.95 33 2 4 Luana Alonso 1:01.16 34 2 2 Olivia Borg 1:01.80 NR 35 2 6 Jasmine Alkhaldi Suspended Member Federation 1:01.94 36 2 1 Sabrina Lyn 1:02.13 37 1 4 Varsenik Manucharyan 1:02.41 NR 38 1 5 María Schutzmeier 1:02.56 39 2 9 Isabella Alas 1:02.85 40 2 7 Oumy Diop 1:03.14 41 1 8 Felicity Passon 1:03.15 42 2 8 Emily Muteti Suspended Member Federation 1:03.17 43 2 0 Julimar Ávila 1:03.52 44 1 3 Lia Ana Lima 1:04.88 45 1 6 Adriana Giles 1:05.70 46 1 7 Hayley Hoy 1:09.14 47 1 2 Hayley Wong 1:09.52 48 1 1 Tara Naluwoza 1:09.69 49 1 0 Alyse Maniriho 1:29.91

Semifinals The semifinals were started on 23 July at 20:12.

Rank Heat Lane Name Nationality Time Notes 1 2 4 Zhang Yufei 56.40 Q 2 1 3 Torri Huske 56.76 Q 3 2 3 Maggie Mac Neil 56.78 Q 4 1 4 Emma McKeon 56.89 Q 5 2 5 Angelina Köhler 57.05 Q, NR 6 1 6 Gretchen Walsh 57.14 Q 6 2 2 Brianna Throssell 57.14 Q 8 2 7 Marie Wattel 57.17 Q 9 1 5 Louise Hansson 57.29 10 1 2 Lana Pudar 57.34 11 2 6 Wang Yichun 57.74 12 1 7 Anna Ntountounaki 57.97 13 1 8 Katerine Savard 58.18 14 2 1 Ai Soma 58.27 15 1 1 Amina Kajtaz 58.49 NR 16 2 8 Helena Rosendahl Bach 58.54

Final The final was held on 24 July at 20:09.

Rank Lane Name Nationality Time Notes 4 Zhang Yufei 56.12 3 Maggie Mac Neil 56.45 5 Torri Huske 56.61 4 6 Emma McKeon 56.88 5 2 Angelina Köhler 57.05 =NR 6 8 Marie Wattel 57.13 7 1 Brianna Throssell 57.34 8 7 Gretchen Walsh 57.58

References