The women's 50 metre butterfly competition of the swimming events at the 2011 World Aquatics Championships was held on July 29 with the heats and the semifinals and July 30 with the final.

Records Prior to the competition, the existing world and championship records were as follows. Name Nation Time Location DateWorld record Championship recordTherese Alshammar 25.07 RomeJuly 31, 2009

Results

Heats 51 swimmers participated in 7 heats.

Rank Heat Lane Name Nationality Time Notes 1 7 4 Therese Alshammar 25.68 Q 2 7 5 Jeanette Ottesen 25.88 Q 3 7 7 Dana Vollmer 25.98 Q 4 6 6 Lu Ying 26.16 Q 5 5 4 Sarah Sjöström 26.17 Q 6 6 2 Christine Magnuson 26.20 Q 7 6 4 Inge Dekker 26.32 Q 8 5 3 Mélanie Henique 26.37 Q 9 6 3 Yuka Kato 26.37 Q 10 5 6 Triin Aljand 26.43 Q 11 7 6 Tao Li 26.43 Q 12 7 3 Marleen Veldhuis 26.50 Q 13 5 5 Marieke Guehrer 26.59 Q 14 5 7 Daynara de Paula 26.60 Q 15 7 1 Vanessa Mohr 26.69 Q 16 6 7 Amit Ivry 26.83 Q 17 6 8 Elena Gemo 26.86 18 4 3 Katerine Savard 26.87 19 6 1 Sviatlana Khakhlova 26.98 20 5 2 Ingvild Snildal 27.01 21 7 8 Ellen Gandy 27.01 22 7 2 Jiao Liuyang 27.03 23 5 1 Kristel Vourna 27.15 24 6 5 Yolane Kukla 27.24 25 5 8 Fabienne Nadarajah 27.27 26 4 4 Hannah Wilson 27.38 27 4 5 Eszter Dara 27.53 28 4 6 Svetlana Fedulova 27.61 29 3 5 Katarina Listopadova 27.62 30 4 1 Sara Oliveira 27.75 31 4 8 Iris Rosenberger 27.82 32 3 4 Jeserick Pinto 27.91 33 3 3 Gabriela Ņikitina 27.92 34 4 7 Alana Dillette 27.98 35 3 2 Talita Baqlah 29.16 36 3 6 Dorian McMenemy 29.37 37 3 1 Dalia Torrez 29.67 38 3 7 Kiran Khan 30.50 39 1 6 Ann-Marie Hepler 30.69 40 2 3 Sylvia Brunlehner 30.81 41 2 4 Hazboun Sabine 31.12 42 3 8 Reshika Udugampola 31.15 43 2 5 Judith Meauri 31.56 44 2 2 Kuheilani Snow 32.27 45 2 6 Johanna Umurungi 32.68 46 2 7 Ouyngerel Gantumur 33.48 47 2 8 Deandra van der Colff 34.06 48 2 1 Mariana Henriques 34.59 49 1 4 Karin O'Reilly Clashing 36.87 50 1 5 Shajan Aminath 38.37 51 1 3 Adzo Rebecca Kpossi 55.17 - 4 2 Hayley Palmer DNS

Semifinals The semifinals were held at 18:19.

Semifinal 1 Rank Lane Name Nationality Time Notes 1 5 Lu Ying 25.87 Q 2 6 Mélanie Henique 26.29 Q 3 1 Daynara de Paula 26.39 4 3 Christine Magnuson 26.43 5 2 Triin Aljand 26.48 6 4 Jeanette Ottesen 26.53 7 7 Marleen Veldhuis 26.61 8 8 Amit Ivry 26.79

Semifinal 2 Rank Lane Name Nationality Time Notes 1 4 Therese Alshammar 25.52 Q 2 6 Inge Dekker 25.78 Q 3 3 Sarah Sjöström 25.90 Q 4 2 Yuka Kato 26.07 Q, =NR 5 1 Marieke Guehrer 26.12 Q 6 5 Dana Vollmer 26.32 Q 7 7 Tao Li 26.34 8 8 Vanessa Mohr 26.74

Final The final was held at 18:02.

Rank Lane Name Nationality Time Notes 5 Inge Dekker 25.71 4 Therese Alshammar 25.76 1 Mélanie Henique 25.86 NR 4 3 Lu Ying 25.87 4 6 Sarah Sjöström 25.87 6 2 Yuka Kato 26.02 NR 7 8 Dana Vollmer 26.06 8 7 Marieke Guehrer 26.21

References

External links 2011 World Aquatics Championships: Women's 50 metre butterfly start list, from OmegaTiming.com; retrieved 2011-07-23.