| Event: | Women's 50m Breaststroke |
| Competition: | 2005 FINA World Aquatics Championships |
| Dates: | 30 July (prelims, semifinals) 31 July (final) |
| Competitors: | 52 |
| Nations: | 41 |
| Win Value: | 30.45 seconds |
| Gold: | Jade Edmistone |
| Goldnoc: | AUS |
| Silver: | Jessica Hardy |
| Silvernoc: | USA |
| Bronze: | Brooke Hanson |
| Bronzenoc: | AUS |
| Prev: | 2003 |
| Next: | 2007 |
See main article: Swimming at the 2005 World Aquatics Championships.
The Women's 50 Breaststroke event at the 11th FINA World Aquatics Championships swam 30 - 31 July 2005 in Montreal, Quebec, Canada. Preliminary and Semifinal heats were swum on 30 July with the heats being held in the morning session[1] and the semifinals being held in the evening session.[2] The final was held on 31 July.[3]
At the start of the event, the existing World (WR) and Championships (CR) records were:
| Rank | Heat + Lane | Swimmer | Nation | Time | Notes |
|---|---|---|---|---|---|
| 1 | H7 L4 | 30.79 | q | ||
| 2 | H6 L4 | 30.99 | q | ||
| 3 | H6 L3 | 31.13 | q | ||
| 4 | H7 L5 | 31.30 | q | ||
| 5 | H6 L5 | 31.66 | q | ||
| 6 | H5 L5 | 31.71 | q | ||
| 7 | H7 L3 | 32.00 | q | ||
| 8 | H5 L4 | 32.08 | q | ||
| 9 | H7 L6 | 32.14 | q | ||
| 10 | H5 L3 | 32.15 | q | ||
| 11 | H6 L8 | 32.19 | q | ||
| 12 | H7 L7 | 32.28 | q | ||
| 13 | H5 L6 | 32.35 | q | ||
| 14 | H7 L2 | 32.43 | q | ||
| 15 | H6 L6 | 32.62 | q | ||
| 16 | H5 L2 | 32.71 | q | ||
| 17 | H5 L7 | 32.79 | |||
| 18 | H4 L4 | 33.00 | |||
| 18 | H6 L2 | 33.00 | |||
| 20 | H4 L8 | 33.01 | |||
| 20 | H5 L8 | 33.01 | |||
| 22 | H6 L1 | 33.03 | |||
| 23 | H5 L1 | 33.04 | |||
| 24 | H4 L3 | 33.26 | |||
| 25 | H7 L8 | 33.29 | |||
| 26 | H4 L7 | 33.38 | |||
| 27 | H7 L1 | 33.59 | |||
| 28 | H3 L4 | 33.74 | |||
| 29 | H3 L5 | 33.76 | |||
| 29 | H4 L6 | 33.76 | |||
| 31 | H4 L1 | 33.86 | |||
| 32 | H3 L3 | 33.97 | |||
| 33 | H4 L2 | 33.98 | |||
| 34 | H3 L6 | 34.14 | |||
| 35 | H3 L2 | 34.42 | |||
| 36 | H3 L7 | 34.56 | |||
| 37 | H3 L1 | 35.36 | |||
| 38 | H3 L8 | 35.75 | |||
| 39 | H2 L5 | 35.87 | |||
| 40 | H2 L2 | 36.15 | |||
| 41 | H2 L7 | 37.03 | |||
| 42 | H2 L6 | 37.04 | |||
| 43 | H2 L3 | 37.14 | |||
| 44 | H2 L1 | 38.15 | |||
| 45 | H2 L4 | 38.75 | |||
| 46 | H1 L6 | 40.18 | |||
| 47 | H2 L8 | 41.69 | |||
| 48 | H1 L3 | 46.38 | |||
| -- | -- | DNS | |||
| -- | -- | DNS | |||
| -- | -- | DNS | |||
| -- | -- | DNS | |||
| Rank | Heat + Lane | Swimmer | Nation | Time | Notes |
|---|---|---|---|---|---|
| 1 | S2 L4 |  Australia | 30.61 | q, CR | |
| 2 | S2 L5 |  USA | 31.10 | q | |
| 3 | S1 L4 | Australia | 31.15 | q | |
| 4 | S1 L3 | USA | 31.26 | q | |
| 5 | S2 L3 |  Great Britain | 31.41 | q | |
| 6 | S1 L6 |  China | 31.45 | q | |
| 7 | S1 L5 |  New Zealand | 31.58 | q | |
| 8 | S2 L6 | Germany | 31.76 | q | |
| 9 | S2 L2 |  Russia | 31.99 | ||
| 10 | S1 L2 |  Poland | 32.12 | ||
| 11 | S2 L1 | Russia | 32.35 | ||
| 12 | S1 L1 |  Sweden | 32.36 | ||
| 13 | S2 L8 | Netherlands | 32.61 | ||
| 14 | S1 L8 |  Austria | 32.67 | ||
| 14 | S2 L7 | South Africa | 32.67 | ||
| 16 | S1 L7 |  Finland | 32.73 | ||
| Place | Swimmer | National | Time | Notes |
|---|---|---|---|---|
| Australia | 30.45 | WR | ||
| USA | 30.85 | |||
| Australia | 30.89 | |||
| 4 | USA | 31.38 | ||
| 5 | New Zealand | 31.43 | ||
| 6 | Great Britain | 31.49 | ||
| 7 | China | 31.50 | ||
| 8 | Germany | 32.45 | ||