Event 305 Womens 100 Metres Butterfly - Heats
| Name | Age | Federation | Seed | Heats | Split
|
| 1 | OTTESEN, Jeanette | 15 | Denmark | 1:01.39 | 1:01.36 | 28.45 | 1:01.36 |
| 2 | BOULSEVICZ, Beatrix | 16 | Hungary | 1:01.03 | 1:01.53 | 29.43 | 1:01.53 |
| 3 | GEMO, Elena | 16 | Italy | 1:01.67 | 1:02.12 | 28.96 | 1:02.12 |
| 4 | URBANCZYK, Aleksandra | 16 | Poland | 1:01.88 | 1:02.21 | 29.27 | 1:02.21 |
| 5 | MUSSI, Sabina | 16 | Italy | 1:01.34 | 1:02.35 | 29.22 | 1:02.35 |
| 6 | VLADYKINA, Vasilisa | 16 | Russia | 1:01.75 | 1:02.65 | 28.88 | 1:02.65 |
| 7 | ANGELOPOULOU, Vasilik | 16 | Greece | 1:03.54 | 1:02.67 | 29.55 | 1:02.67 |
| 8 | SKRUBEL, Franziska | 16 | Germany | 1:01.77 | 1:03.03 | 29.60 | 1:03.03 |
| 9 | KLINAR, Anja | 15 | Slovenia | 1:02.14 | 1:03.07 | 29.65 | 1:03.07 |
| 10 | BOULOUNAUD, Celine | 16 | France | 1:03.35 | 1:03.32 | 29.47 | 1:03.32 |
| 11 | NILSSON, Emilia | 15 | Sweden | 1:03.86 | 1:03.46 | 29.19 | 1:03.46 |
| 12 | NOWAK, Agata | 16 | Poland | 1:01.92 | 1:03.48 | 29.79 | 1:03.48 |
| 13 | MUELA, Aranzazu | 16 | Spain | 1:03.43 | 1:03.56 | 30.05 | 1:03.56 |
| 14 | FARKAS, Marianna | 16 | Hungary | 1:03.79 | 1:03.61 | 29.95 | 1:03.61 |
| 15 | SINKEVICH, Natalia | 16 | Belarus | 1:03.05 | 1:03.63 | 29.55 | 1:03.63 |
| 16 | MADEIRA, Sara | 16 | Portugal | 1:04.68 | 1:03.64 | 29.82 | 1:03.64 |
| 17 | HARLE, Isabelle | 15 | Germany | 1:03.85 | 1:03.68 | 29.96 | 1:03.68 |
| 18 | AMARAL, Renata | 16 | Portugal | 1:04.62 | 1:03.69 | 29.84 | 1:03.69 |
| 19 | MIRONENKO, Valeriya | 16 | Russia | 1:01.61 | 1:04.14 | 30.05 | 1:04.14 |
| 20 | KOSCHISCHEK, Brigit | 16 | Austria | 1:05.00 | 1:04.63 | 30.23 | 1:04.63 |
| 21 | OSTERGAARD, Micha | 16 | Denmark | 1:04.26 | 1:04.77 | 30.11 | 1:04.77 |
| 22 | MATIKOVA, Miroslava | 15 | Slovakia | 1:05.15 | 1:04.98 | 30.32 | 1:04.98 |
| 23 | MAILLIET, Christine | 16 | Luxembourg | 1:05.14 | 1:05.73 | 29.67 | 1:05.73 |
| 24 | STOJIN, Aleksandra | 15 | Serbia & Monte N | 1:07.28 | 1:06.50 | 31.39 | 1:06.50 |
| 25 | METSAR, Nino | 16 | Estonia | 1:03.85 | 1:06.69 | 30.54 | 1:06.69 |
| 26 | BRADEANU, Sorina | 16 | Romania | 1:07.50 | 1:06.88 | 31.02 | 1:06.88 |
| 27 | MAZTRI, Sari | 16 | Israel | 1:05.29 | 1:07.11 | 31.42 | 1:07.11 |
| 28 | KOPALOVA, Michaela | 16 | Czech Republic | 1:07.18 | 1:07.16 | 31.16 | 1:07.16 |
| 29 | WAGNER, Senata | 15 | Switzerland | 1:05.12 | 1:07.19 | 30.72 | 1:07.19 |
| 30 | BREKKE, Henriette | 15 | Norway | 1:07.93 | 1:07.20 | 30.96 | 1:07.20 |
| 31 | HANNESDOTTIR, Eva | 15 | Iceland | 1:07.93 | 1:07.28 | 31.34 | 1:07.28 |
| 32 | YAPANAR, Yasemin | 16 | Turkey | 1:06.60 | 1:08.90 | 31.94 | 1:08.90 |
| 33 | KLIMANSKAJA, Inessa | 16 | Estonia | 1:09.50 | 1:09.11 | 31.99 | 1:09.11 |