| Final 19:30 | time | +time | L | Rk. |   |  | 1. Ranomi Kromowidjojo |  NED | 24.05s | OR | 04 |  Times |  | 2. Aliaksandra Herasimenia |  BLR | 24.28s | +0.23s | 05 |  Times |  | 3. Marleen Veldhuis |  NED | 24.39s | +0.34s | 03 |  Times |  | 4. Britta Steffen |  GER | 24.46s | +0.41s | 06 |  Times |  | 5. Francesca Halsall |  GBR | 24.47s | +0.42s | 02 |  Times |  | 6. Therese Alshammar |  SWE | 24.61s | +0.56s | 08 |  Times |  | 7. Jessica Hardy |  USA | 24.62s | +0.57s | 01 |  Times |  | 8. Arianna Vanderpool-Wallace |  BAH | 24.69s | +0.64s | 07 |  Times |   
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   |  | Ranomi Kromowidjojo |   
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| Semi 1 | time | +time | L | Rk. |   |  | 1. Marleen Veldhuis |  NED | 24.50s | -s | 04 | 3. |  Times |  | 2. Britta Steffen |  GER | 24.57s | +0.07s | 05 | 4. |  Times |  | 3. Arianna Vanderpool-Wallace |  BAH | 24.64s | +0.14s | 06 | 6. |  Times |  | 4. Jessica Hardy |  USA | 24.68s | +0.18s | 07 | 7. |  Times |  | 5. Therese Alshammar |  SWE | 24.71s | +0.21s | 03 | 8. |  Times |  | 6. Amy Smith |  GBR | 24.87s | +0.37s | 08 | 9. |  Times |  | 7. Cate Campbell |  AUS | 25.01s | +0.51s | 02 | 13. |  Times |  | 8. Victoria Poon |  CAN | 25.17s | +0.67s | 01 | 15. |  Times |   
| Semi 2 | time | +time | L | Rk. |   |  | 1. Ranomi Kromowidjojo |  NED | 24.07s | -s | 04 | 1. |  Times |  | 2. Aliaksandra Herasimenia |  BLR | 24.45s | +0.38s | 03 | 2. |  Times |  | 3. Francesca Halsall |  GBR | 24.63s | +0.56s | 05 | 5. |  Times |  | 4. Bronte Campbell |  AUS | 24.94s | +0.87s | 02 | 10. |  Times |  | 4. Anna Santamans |  FRA | 24.94s | +0.87s | 08 | 11. |  Times |  | 6. Jeanette Ottesen Gray |  DEN | 24.99s | +0.92s | 06 | 12. |  Times |  | 7. Sarah Sjostrom |  SWE | 25.08s | +1.01s | 07 | 14. |  Times |  | 8. Theodora Drakou |  GRE | 25.28s | +1.21s | 01 | 16. |  Times |   
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|   | S | F |  | Semi 1 |   | 5  |  | Semi 2 |   | 3  |  | Heat 10 | 5 | 4  |  | Heat 9 | 7 | 3  |  | Heat 8 | 4 | 1  |  | Heat 7  |  | Heat 6  |  | Heat 5  |  | Heat 4  |  | Heat 3  |  | Heat 2  |  | Heat 1  |  | Swimm-Off | 1 |   
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| Heat 10 | time | +time | L |  | 1. Ranomi Kromowidjojo |  NED | 24.51s |   | 04 | 1. |  | 2. Marleen Veldhuis |  NED | 24.57s | +0.06s | 05 | 2. |  | 3. Arianna Vanderpool-Wallace |  BAH | 24.85s | +0.34s | 02 | 7. |  | 3. Jeanette Ottesen Gray |  DEN | 24.85s | +0.34s | 06 | 8. |  | 5. Jessica Hardy |  USA | 24.99s | +0.48s | 03 | 12. |  | 6. Triin Aljand |  EST | 25.33s | +0.82s | 07 | 19. |  | 7. Sviatlana Khakhlova |  BLR | 25.36s | +0.85s | 01 | 20. |  | 8. Darya Stepanyuk |  UKR | 25.70s | +1.19s | 08 | 33. |   
| Heat 9 | time | +time | L | Rk. |  | 1. Francesca Halsall |  GBR | 24.61s |   | 04 | 3. |  | 2. Britta Steffen |  GER | 24.70s | +0.09s | 05 | 4. |  | 3. Aliaksandra Herasimenia |  BLR | 24.76s | +0.15s | 03 | 5. |  | 4. Sarah Sjostrom |  SWE | 24.94s | +0.33s | 06 | 11. |  | 5. Victoria Poon |  CAN | 25.15s | +0.54s | 07 | 14. |  | 6. Anna Santamans |  FRA | 25.23s | +0.62s | 08 | 15. |  | 7. Amy Smith |  GBR | 25.28s | +0.67s | 02 | 17. |  | 8. Pernille Blume |  DEN | 25.54s | +0.93s | 01 | 24. |   
| Heat 8 | time | +time | L | Rk. |  | 1. Therese Alshammar |  SWE | 24.77s |   | 04 | 6. |  | 2. Bronte Campbell |  AUS | 24.87s | +0.10s | 03 | 9. |  | 3. Cate Campbell |  AUS | 24.94s | +0.17s | 05 | 10. |  | 4. Theodora Drakou |  GRE | 25.13s | +0.36s | 07 | 13. |  | 5. Kara Lynn Joyce |  USA | 25.28s | +0.51s | 06 | 16. |  | 6. Nery Niangkouara |  GRE | 25.40s | +0.63s | 02 | 21. |  | 7. Graciele Herrmann |  BRA | 25.44s | +0.67s | 01 | 22. |  | 8. Yayoi Matsumoto |  JPN | 25.73s | +0.96s | 08 | 35. |   
| Heat 7 | time | +time | L | Rk. |  | 1. Sarah Blake Bateman |  ISL | 25.28s |   | 06 | 18. |  | 2. Hayley Palmer |  NZL | 25.47s | +0.19s | 02 | 23. |  | 3. Arlene Semeco Arismendi |  VEN | 25.56s | +0.28s | 04 | 28. |  | 4. Vanessa Garcia Vega |  PUR | 25.58s | +0.30s | 07 | 29. |  | 5. Anna Dowgiert |  POL | 25.59s | +0.31s | 03 | 30. |  | 6. Jolien Sysmans |  BEL | 25.60s | +0.32s | 08 | 31. |  | 7. Burcu Dolunay |  TUR | 25.72s | +0.44s | 05 | 34. |  | 8. Trudi Maree |  RSA | 25.78s | +0.50s | 01 | 36. |   
| Heat 6 | time | +time | L | Rk. |  | 1. Qianwei Zhu |  CHN | 25.54s |   | 03 | 25. |  | 2. Hanna-maria Seppala |  FIN | 25.55s | +0.01s | 05 | 26. |  | 3. Erika Ferraioli |  ITA | 25.69s | +0.15s | 06 | 32. |  | 4. Alia Atkinson |  JAM | 25.98s | +0.44s | 08 | 37. |  | 5. Miroslava Syllabova |  SVK | 26.07s | +0.53s | 02 | 38. |  | 6. Farida Osman |  EGY | 26.34s | +0.80s | 01 | 41. |  | 7. Miroslava Najdanovski |  SRB | 26.46s | +0.92s | 07 | 42. |  | -. Eszter Dara |  HUN | DNS | 04 |   |   
| Heat 5 | time | +time | L | Rk. |  | 1. Ruta Meilutyte |  LTU | 25.55s |   | 04 | 27. |  | 2. Gabriela Nikitina |  LAT | 26.26s | +0.71s | 03 | 39. |  | 3. Chinyere Pigot |  SUR | 26.30s | +0.75s | 05 | 40. |  | 4. Nicola Muscat |  MLT | 27.22s | +1.67s | 06 | 43. |  | 5. Jessica Teixeira Vieira |  MOZ | 27.39s | +1.84s | 02 | 44. |  | 6. Talita Baqlah |  JOR | 27.45s | +1.90s | 07 | 45. |  | 7. Faye Sultan |  KUW | 27.92s | +2.37s | 01 | 48. |  | 8. Jamila Lunkuse |  UGA | 28.44s | +2.89s | 08 | 52. |   
| Heat 4 | time | +time | L | Rk. |  | 1. Joyce Tafatatha |  MAW | 27.74s |   | 02 | 46. |  | 2. Judith Meauri |  PNG | 27.84s | +0.10s | 05 | 47. |  | 3. Ann-Marie Hepler |  MHL | 28.06s | +0.32s | 04 | 49. |  | 4. Keesha Keane |  PLW | 28.25s | +0.51s | 03 | 50. |  | 5. Sabine Hazboun |  PLE | 28.28s | +0.54s | 06 | 51. |  | 6. Antoinette Guedia Mouafo |  CMR | 29.28s | +1.54s | 08 | 53. |  | 7. Celeste Brown |  COK | 29.36s | +1.62s | 07 | 54. |  | 8. Mariana Henriques |  ANG | 31.36s | +3.62s | 01 | 61. |   
| Heat 3 | time | +time | L | Rk. |  | 1. Karin O'Reilly Clashing |  ANT | 30.01s |   | 03 | 55. |  | 2. Vitiny Hemthon |  CAM | 30.44s | +0.43s | 06 | 57. |  | 3. Alphonsine Agahozo |  RWA | 30.72s | +0.71s | 05 | 58. |  | 4. Nada Mohammed W S Arakji |  QAT | 30.89s | +0.88s | 02 | 59. |  | 5. Katerina Izmaylova |  TJK | 31.27s | +1.26s | 04 | 60. |  | 6. Fatoumata Samassekou |  MLI | 31.88s | +1.87s | 07 | 62. |  | 7. Aminath Shajan |  MDV | 32.23s | +2.22s | 08 | 64. |  | 8. Yanet Seyoum Gebremedhin |  ETH | 32.41s | +2.40s | 01 | 65. |   
| Heat 2 | time | +time | L | Rk. |  | 1. Debra Daniel |  FSM | 30.32s |   | 06 | 56. |  | 2. Angelika Ouedraogo |  BUR | 32.19s | +1.87s | 04 | 63. |  | 3. Assita Toure |  CIV | 33.09s | +2.77s | 03 | 66. |  | 4. Elsie Uwamahoro |  BDI | 33.14s | +2.82s | 02 | 67. |  | 5. Sara Alflaij |  BRN | 33.81s | +3.49s | 05 | 68. |  | 6. Aminata Aboubakar Yacoub |  CGO | 34.64s | +4.32s | 07 | 69. |  | 7. Mhasin Fadlalla |  SUD | 35.07s | +4.75s | 01 | 70. |   
| Heat 1 | time | +time | L | Rk. |  | 1. Nafissatou Moussa Adamou |  NIG | 37.29s |   | 04 | 71. |  | 2. Adzo Kpossi |  TOG | 37.55s | +0.26s | 05 | 72. |  | 3. Masempe Theko |  LES | 42.35s | +5.06s | 03 | 73. |   
| Swimm-Off 12:05 | time | +time | L | Rk. |  | 1. Amy Smith |  GBR | 24.82s |   | 03 | 17. |  | 2. Kara Lynn Joyce |  USA | 25.16s | +0.34s | 05 | 18. |  | 3. Sarah Blake Bateman |  ISL | 26.03s | +1.21s | 04 | 19. |   
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|  Total eligible to participate 72 swimmers. 73 started. |   
|  Olympic Qualifying Time - 25.27s - 16+13 |  | Cate Campbell | AUS | 13. | Bronte Campbell | AUS | 10. |  | Aliaksandra Herasimenia | BLR | 2. | Sviatlana Khakhlova | BLR | 20. |  | Jeanette Ottesen | DEN | 12. | Pernille Blume | DEN | 24. |  | Amy Smith | GBR | 9. | Francesca Halsall | GBR | 5. |  | Nery Mantey Niangkouara | GRE | 21. | Theodora Drakou | GRE | 16. |  | Marleen Veldhuis | NED | 3. | Ranomi Kromowidjojo | NED | 1. |  | Therese Alshammar | SWE | 6. | Sarah Sjöström | SWE | 14. |  | Jessica Hardy | USA | 7. | Kara Lynn Joyce | USA | 17. |  | Arianna Vanderpool-Wallace | BAH | 8. |  | Graciele Herrmann | BRA | 22. |  | Victoria Poon | CAN | 15. |  | Anna Santamans | FRA | 10. |  | Britta Steffen | GER | 4. |  | Sarah Bateman | ISL | 18. |  | Yayoi Matsumoto | JPN | 35. |  | Burcu Dolunay | TUR | 34. |  | Darya Stepanyuk | UKR | 33. |  | Anna Dowgiert | POL | 30. |  | Triin Aljand | EST | 19. |  | Hayley Palmer | NZL | 23. |  | Arlene Semeco | VEN | 28. |   
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|  Olympic Selection Time - 26.15s - 12 |  | Vanessa García | PUR | 25.32s | 29. |  | Trudi Maree | RSA | 25.35s | 36. |  | Jolien Sysmans | BEL | 25.37s | 31. |  | Eszter Dara | HUN | 25.41s | DNS |  | Hanna-Maria Seppala | FIN | 25.52s | 26. |  | Zhu Qianwei | CHN | 25.57s | 24. |  | Erika Ferraioli | ITA | 25.59s | 32. |  | Miroslava Syllabová | SVK | 25.60s | 38. |  | Miroslava Najdanovski | SRB | 25.64s | 42. |  | Alia Atkinson | JAM | qoe | 37. |  | Ruta Meilutyte | LTU | qoe | 26. |  | Chinyere Pigot | SUR | up | 40. |   
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|  Wildcard Places - 31+2. |  | Mariana Henriques | ANG | 61. |  | Karin Clashing | ANT | 55. |  | Sara Al Flaij | BRN | 68. |  | Angelika Site Ouedraogo | BUR | 63. |  | Elsie Uwamahoro | BDI | 67. |  | Vitiny Hemthon | CAM | 57. |  | Guedia Mouafo | CMR | 53. |  | Aminata Yakoub Aboubakar | CGO | 69. |  | Celeste Brown | COK | 54. |  | Toure Assita | CIV | 66. |  | Yanet Seyoum | ETH | 65. |  | Talita Baqlah | JOR | 45. |  | Faye Sultan | KUW | 48. |  | Gabriela Nikitina | LAT | 39. |  | Masempe Theko | LES | 73. |  | Joyce Tafatatha | MAW | 46. |  | Aminath Shajan | MDV | 64. |  | Fatoumata Samassekou | MLI | 62. |  | Nicola Muscat | MLT | 43. |  | Ann-Marie Hepler | MHL | 49. |  | Jessica Vieira | MOZ | 44. |  | Nafissatou Adamou | NIG | 71. |  | Keesha Keane | PLW | 50. |  | Sabine Hazboun | PLE | 51. |  | Judith Meauri | PNG | 47. |  | Nada Arkaji | QAT | 59. |  | Alphonsine Agahozo | RWA | 58. |  | Mhasin El Nour Fadlalla | SUD | 70. |  | Katerina Izmaylova | TJK | 60. |  | Azdo Rebecca Kpossi | TOG | 72. |  | Jamila Lunkuse | UGA | 52. |  |  added |  | Farida Osman | EGY | 41. |  | Debra Daniel | FSM | 56. |  |  From Women 100m Freestyle |   
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| Olympic Qualification time | time | place | date | birth |  | 1. Ranomi Kromowidjojo | NED | 24.10s | Eindhoven(NED) | 12.04.2012 | 20/08/1990 |  | 2. Francesca Halsall | GBR | 24.13s | London(GBR) | 03.03.2012 | 12/04/1990 |  | 3. Therese Alshammar | SWE | 24.14s | Shanghai(CHN) | 24.07.2011 | 26/08/1977 |  | 4. Marleen Veldhuis | NED | 24.32s | Eindhoven(NED) | 12.04.2012 | 29/06/1979 |  | 5. Britta Steffen | GER | 24.37s | Debrecen(HUN) | 21.05.2012 | 16/11/1983 |  | 6. Cate Campbell | AUS | 24.43s | Brisbane(AUS) | 10.12.2011 | 20/05/1992 |  | 7. Jessica Hardy | USA | 24.50s | Omaha(USA) | 25.06.2012 | 12/03/1987 |  | 8. Aliaksandra Herasimenia | BLR | 24.57s | Brest(BLR) | 26.04.2011 | 31/12/1985 |  | 9. Bronte Campbell | AUS | 24.61s | Adelaide(AUS) | 15.03.2012 | 14/05/1994 |  | 10.Jeanette Ottesen | DEN | 24.61s | Shanghai(CHN) | 24.07.2011 | 30/12/1987 |  | 11.Sarah Sjoestroem | SWE | 24.63s | Eindhoven(NED) | 12.04.2012 | 17/08/1993 |  | 12.Kara Lynn Joyce | USA | 24.73s | Omaha(USA) | 25.06.2012 | 25/10/1985 |  | 13.Arianna Vanderpool-Wallace | BAH | 24.79s | Shanghai(CHN) | 24.07.2011 | 04/03/1990 |  | 14.Amy Smith | GBR | 24.80s | London(GBR) | 03.03.2012 | 24/07/1987 |  | 15.Nery Manthey Niangkouara | GRE | 24.93s | Debrecen(HUN) | 21.05.2012 | 01/01/1983 |  | 16.Triin Aljand | EST | 25.01s | Debrecen(HUN) | 21.05.2012 | 08/07/1985 |  | 17.Victoria Poon | CAN | 25.03s | Montreal(CAN) | 27.03.2012 | 12/10/1984 |  | 18.Theodora Drakou | GRE | 25.05s | Debrecen(HUN) | 21.05.2012 | 06/02/1992 |  | 19.Sviatlana Khakhlova | BLR | 25.07s | Brest(BLR) | 25.01.2012 | 02/10/1984 |  | 20.Pernille Blume | DEN | 25.09s | Bronshoj(DEN) | 22.03.2012 | 14/05/1994 |  | 21.Graciele Hermann | BRA | 25.12s | Rio de Janeiro(BRA) | 15.12.2011 | 01/01/1992 |  | 22.Darya Stepanyuk | UKR | 25.12s | Shenzhen(CHN) | 14.08.2011 | 22/05/1990 |  | 23.Anna Santamans | FRA | 25.16s | Dunkerke(FRA) | 18.03.2012 | 25/04/1993 |  | 24.Yayoi Matsumoto | JPN | 25.18s | Shizuoka(JPN) | 09.04.2011 | 08/03/1990 |  | 25.Arlene Semeco | VEN | 25.21s | Belem(BRA) | 12.03.2012 | 11/01/1984 |  | 26.Burcu Dolunay | TUR | 25.22s | Istanbul(TUR) | 02.05.2012 | 17/02/1984 |  | 27.Anna Dowgiert | POL | 25.23s | Debrecen(HUN) | 21.05.2012 | 15/07/1990 |  | 28.Sarah Bateman | ISL | 25.24s | Debrecen(HUN) | 21.05.2012 | 15/06/1990 |  | 29.Hayley Palmer | NZL | 25.27s | Auckland(NZL) | 25.03.2012 | 08/05/1989 |   
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