From the 27th of July 2012 over 10,000 athletes from more than 200 countries competed in 30 venues

  1. Aminata Aboubakar Yacoub Congo Swimming

  2. Crox Acuna Rodriguez Venezuela Swimming

  3. Cammile Adams
    United States Swimming

  4. Rebecca Adlington
    Great Britain & N. Ireland Swimming

    One to watch Medallist

  5. Nathan Adrian
    United States Swimming

    Medallist

  6. Jasper Aerents Belgium Swimming

  7. Dragos Agache Romania Swimming

  8. Alphonsine Agahozo Rwanda Swimming

  9. Yannick Agnel
    France Swimming

    Medallist

  10. Tolga Akcayli St Vincent and the Grenadines Swimming

  11. Mubarak Al Besher
    United Arab Emirates Swimming

  12. Mohanad Ahmed Dheyaa Al-Azzawi
    Iraq Swimming

  13. Yousef Alaskari
    Kuwait Swimming

  14. Azad Albarazi
    Syria Swimming

  15. Dmitrii Aleksandrov Kyrgyzstan Swimming

  16. Octavio Alesi Gonzalez Venezuela Swimming

  17. Rafael Alfaro
    El Salvador Swimming

  18. Sara Alflaij
    Bahrain Swimming

  19. Khalid Alibaba
    Bahrain Swimming

  20. Triin Aljand
    Estonia Swimming

  21. Jasmine Alkhaldi
    Philippines Swimming

  22. Sophie Allen
    Great Britain & N. Ireland Swimming

  23. Bradley Ally Barbados Swimming

  24. Carlos Almeida Portugal Swimming

  25. Kaio Almeida Brazil Swimming

  26. Therese Alshammar Sweden Swimming

  27. Abdullah Althuwaini Swimming

  28. Ranohon Amanova
    Uzbekistan Swimming

  29. Anton Anchin
    Russian Federation Swimming

  30. Haley Anderson
    United States Swimming

    Medallist

  31. Alyssa Anderson
    United States Swimming

    Medallist

  32. Ekaterina Andreeva
    Russian Federation Swimming