2003 NASDAQ-100 Open – Women's singles


Defending champion Serena Williams defeated Jennifer Capriati in a rematch of the previous year's final, 4–6, 6–4, 6–1 to win the women's singles tennis title at the 2003 Miami Open.
This was Capriati’s third consecutive final at the Miami Open, also losing the 2001 final to Venus Williams.

Seeds

All seeds received a bye into the second round.
  1. Serena Williams
  2. Venus Williams '
  3. Kim Clijsters '
  4. Justine Henin-Hardenne '
  5. Daniela Hantuchová '
  6. Jennifer Capriati '
  7. Lindsay Davenport '
  8. Amélie Mauresmo '
  9. Jelena Dokić '
  10. Monica Seles '
  11. Anastasia Myskina '
  12. Chanda Rubin '
  13. Magdalena Maleeva '
  14. Eleni Daniilidou '
  15. Anna Pistolesi '
  16. Elena Bovina '
  17. Ai Sugiyama '
  18. Amanda Coetzer '
  19. Elena Dementieva '
  20. Silvia Farina Elia '
  21. Nathalie Dechy '
  22. Lisa Raymond '
  23. Meghann Shaughnessy '
  24. Alexandra Stevenson '
  25. Tatiana Panova '
  26. Clarisa Fernández '
  27. Paola Suárez '
  28. Elena Likhovtseva '
  29. Iva Majoli '
  30. Tamarine Tanasugarn '
  31. Laura Granville '
  32. Marie-Gayanay Mikaelian ''''

Qualifying

Lucky loser

  1. '''Evie Dominikovic'''