Swimming at the 2003 World Aquatics Championships – Women's 50 metre breaststroke

Women's 50m Breaststroke at the 2003 FINA World Aquatics Championships
Venue	Palau Sant Jordi
Dates	26 July (prelims + semis); 27 July (final)
Medalists
Xuejuan Luo    China   Brooke Hanson    Australia   Zoë Baker    Great Britain
← 2001 2005 →

The Women's 50m Breaststroke event at the 10th FINA World Aquatics Championships swam on 26–27 July 2003 in Barcelona, Spain. Preliminary heats swam during the morning session on July 26, with the top-16 finishers advancing to Semifinals that evening. The top-8 finishers then advanced to swim again in the Final the next evening.

At the start of the event, the World (WR) and Championship (CR) records were:

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