# 2010 FINA World Swimming Championships (25 m) – Women's 100 metre individual medley

The Women's 100 Individual Medley (or I.M.) at the 10th FINA World Swimming Championships (25m) took place 16–17 December 2010 in Dubai, United Arab Emirates. The preliminary heats and semifinals were swum on 16 December; the final on 17 December.
66 individuals swam the event.

## Records

Prior to the competition, the existing world and championship records were as follows.
| | Name | Nation | Time | Location | Date |
| World record | Hinkelien Schreuder | Netherlands | 57.74 | Berlin | 15 November 2009 |
| Championship record | Jenny Thompson | United States | 59.30 | Hong Kong | 1 April 1999 |
The following records were established during the competition:
| Date | Round | Name | Nation | Time | WR | CR |
| 16 December 2010 | Heats | Ariana Kukors | United States | 59.14 | | CR |
| 16 December 2010 | Semifinals | Ariana Kukors | United States | 58.65 | | CR |

## Results
### Heats

| Rank | Heat | Lane | Name | Time | Notes |
| 1 | 2 | 1 | Ariana Kukors (USA) | 59.14 | Q, CR |
| 2 | 8 | 4 | Evelyn Verrasztó (HUN) | 1:00.01 | Q |
| 2 | 8 | 5 | Jane Trepp (EST) | 1:00.01 | Q |
| 4 | 9 | 3 | Theresa Michalak (GER) | 1:00.14 | Q |
| 5 | 8 | 2 | Hanna-Maria Seppälä (FIN) | 1:00.15 | Q |
| 6 | 8 | 3 | Sarah Sjöström (SWE) | 1:00.33 | Q |
| 7 | 9 | 4 | Hinkelien Schreuder (NED) | 1:00.40 | Q |
| 8 | 2 | 3 | Missy Franklin (USA) | 1:00.46 | Q |
| 9 | 8 | 6 | Liu Jing (CHN) | 1:00.57 | Q |
| 10 | 9 | 6 | Kotuku Ngawati (AUS) | 1:00.61 | Q |
| 11 | 9 | 5 | Sviatlana Khakhlova (BLR) | 1:00.73 | Q |
| 12 | 2 | 6 | Aleksandra Gerasimenya (BLR) | 1:00.83 | Q |
| 13 | 9 | 2 | Aleksandra Urbanczyk (POL) | 1:01.08 | Q |
| 14 | 7 | 6 | Francesca Segat (ITA) | 1:01.12 | Q |
| 15 | 8 | 7 | Ekaterina Andreeva (RUS) | 1:01.13 | Q |
| 16 | 7 | 4 | Katharina Stiberg (NOR) | 1:01.37 | Q |
| 17 | 8 | 1 | Julyana Kury (BRA) | 1:01.55 | |
| 18 | 7 | 7 | Daria Belyakina (RUS) | 1:01.60 | |
| 19 | 9 | 7 | Laura Letrari (ITA) | 1:01.62 | |
| 20 | 9 | 8 | Fabiola Molina (BRA) | 1:01.66 | |
| 21 | 7 | 8 | Sara Thydén (SWE) | 1:01.86 | |
| 22 | 6 | 4 | Hrafnhildur Lúthersdóttir (ISL) | 1:01.91 | |
| 23 | 5 | 3 | Ragnheiður Ragnarsdóttir (ISL) | 1:01.98 | |
| 24 | 9 | 1 | Emilia Pikkarainen (FIN) | 1:02.00 | |
| 25 | 1 | 3 | Zhao Jing (CHN) | 1:02.05 | |
| 26 | 6 | 5 | Lisa Zaiser (AUT) | 1:02.22 | |
| 27 | 2 | 2 | Leisel Jones (AUS) | 1:02.33 | |
| 28 | 7 | 1 | Mireia Belmonte García (ESP) | 1:02.36 | |
| 29 | 6 | 2 | Melanie Schweiger (SUI) | 1:02.65 | |
| 30 | 8 | 8 | Katarina Listopadova (SVK) | 1:02.74 | |
| 31 | 6 | 3 | Nina Sovinek (SLO) | 1:02.87 | |
| 32 | 7 | 3 | Alana Kathryn Dillette (BAH) | 1:02.88 | |
| 33 | 5 | 6 | Sara El Bekri (MAR) | 1:02.98 | |
| 33 | 6 | 7 | Mandy Loots (RSA) | 1:02.98 | |
| 35 | 6 | 6 | Burcu Dolunay (TUR) | 1:03.16 | |
| 36 | 5 | 4 | Katheryn Anne Meaklim (RSA) | 1:03.19 | |
| 37 | 6 | 1 | Sarra Lajnef (TUN) | 1:03.20 | |
| 38 | 5 | 5 | Caroline Reitshammer (AUT) | 1:03.48 | |
| 39 | 6 | 8 | Kong Yvette Man Yi (HKG) | 1:03.80 | |
| 40 | 7 | 2 | Cheng Wan-Jung (TPE) | 1:03.83 | |
| 41 | 3 | 7 | Alia Atkinson (JAM) | 1:04.64 | |
| 42 | 3 | 8 | Gizem Bozkurt (TUR) | 1:05.10 | |
| 43 | 4 | 5 | Lara Butler (CAY) | 1:05.44 | |
| 44 | 5 | 2 | Ma Cheok Mei (MAC) | 1:05.80 | |
| 45 | 3 | 1 | Eliana Barrios (VEN) | 1:06.60 | |
| 46 | 1 | 4 | Farida Osman (EGY) | 1:07.52 | |
| 47 | 4 | 3 | Karen Torrez (BOL) | 1:07.57 | NR |
| 48 | 5 | 8 | Magdalene Briedenhann (NAM) | 1:08.10 | |
| 49 | 5 | 1 | Micaela Cloete (NAM) | 1:08.36 | |
| 50 | 5 | 7 | Melinda Sue Micallef (MLT) | 1:08.55 | |
| 51 | 4 | 4 | Sara Hyajna (JOR) | 1:09.99 | |
| 52 | 4 | 2 | Tan Chi Yan (MAC) | 1:10.46 | |
| 53 | 4 | 6 | Davina Mangion (MLT) | 1:10.55 | |
| 54 | 4 | 7 | Dalia Torrez (NCA) | 1:10.64 | |
| 55 | 2 | 5 | Tieri Erasito (FIJ) | 1:13.49 | |
| 56 | 3 | 5 | Anum Bandey (PAK) | 1:13.65 | |
| 57 | 2 | 4 | Zonia Caravantes (GUA) | 1:13.70 | |
| 58 | 4 | 8 | Cheyenne Rova (FIJ) | 1:13.83 | |
| 59 | 4 | 1 | Estellah Fils Rabetsara (MAD) | 1:13.96 | |
| 60 | 3 | 3 | Anham Salyani (KEN) | 1:15.07 | |
| 61 | 3 | 2 | Rachael Tonjor (NGR) | 1:15.60 | |
| 62 | 3 | 4 | Sonia Cege (KEN) | 1:17.76 | |
| 63 | 3 | 6 | Ann-Marie Hepler (MHL) | 1:20.56 | |
| 64 | 1 | 5 | Britany van Lange (GUY) | 1:20.98 | |
| 65 | 2 | 7 | Grace Kimball (NMI) | 1:21.40 | |
| - | 7 | 5 | Ingvild Snildal (NOR) | DNS | |

### Semifinals

Semifinal 1
| Rank | Lane | Name | Time | Notes |
| 1 | 2 | Kotuku Ngawati (AUS) | 59.18 | Q |
| 2 | 6 | Missy Franklin (USA) | 59.67 | Q |
| 3 | 4 | Evelyn Verrasztó (HUN) | 59.86 | Q |
| 4 | 5 | Theresa Michalak (GER) | 59.87 | Q |
| 5 | 1 | Francesca Segat (ITA) | 1:00.44 | |
| 6 | 7 | Aleksandra Gerasimenya (BLR) | 1:00.79 | |
| 7 | 3 | Sarah Sjöström (SWE) | 1:01.12 | |
| 8 | 8 | Katharina Stiberg (NOR) | 1:02.87 | |
Semifinal 2
| Rank | Lane | Name | Time | Notes |
| 1 | 4 | Ariana Kukors (USA) | 58.65 | Q, CR |
| 2 | 2 | Liu Jing (CHN) | 59.36 | Q |
| 3 | 6 | Hinkelien Schreuder (NED) | 59.63 | Q |
| 4 | 5 | Jane Trepp (EST) | 59.77 | Q |
| 5 | 3 | Hanna-Maria Seppälä (FIN) | 1:00.49 | |
| 6 | 1 | Aleksandra Urbanczyk (POL) | 1:00.85 | |
| 7 | 7 | Sviatlana Khakhlova (BLR) | 1:00.96 | |
| 8 | 8 | Ekaterina Andreeva (RUS) | 1:01.86 | |

### Final

| Rank | Lane | Name | Time |
| | 4 | Ariana Kukors (USA) | 58.95 |
| | 5 | Kotuku Ngawati (AUS) | 59.27 |
| | 3 | Hinkelien Schreuder (NED) | 59.53 |
| 4 | 2 | Jane Trepp (EST) | 59.85 |
| 5 | 1 | Theresa Michalak (GER) | 59.97 |
| 6 | 7 | Evelyn Verrasztó (HUN) | 1:00.19 |
| 7 | 6 | Missy Franklin (USA) | 1:00.75 |
| 8 | 8 | Francesca Segat (ITA) | 1:01.29 |