| Event: | Women's 50 metres butterfly |
| Competition: | 2002 Commonwealth Games |
| Venue: | Manchester Aquatics Centre |
| Dates: | 30–31 July 2002 |
| Competitors: | 28 |
| Nations: | 21 |
| Win Value: | 26.66 s |
| Gold: | Petria Thomas |
| Goldnoc: | AUS |
| Silver: | Nicole Irving |
| Silvernoc: | AUS |
| Bronze: | Alison Sheppard |
| Bronzenoc: | SCO |
| Prev: | 1998 |
| Next: | 2006 |
The women's 50 metre butterfly event at the 2002 Commonwealth Games took place 30–31 July. The heats and the semi were held on 30 July, the final on 31 July.
| Rank | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|
| 4 | 26.66 | GR | |||
| 5 | 27.13 | ||||
| 3 | 27.30 | ||||
| 4 | 2 | 27.41 | |||
| 5 | 6 | 27.55 | |||
| 6 | 1 | 27.88 | |||
| 7 | 7 | 27.94 | |||
| 8 | 8 | 28.22 | |||
Key: WR = World record
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 2 | 4 | 27.09 | Q | |||
| 2 | 1 | 4 | 27.19 | Q | |||
| 3 | 2 | 5 | 27.30 | Q | |||
| 4 | 1 | 5 | 27.48 | Q | |||
| 5 | 2 | 3 | 27.57 | Q | |||
| 6 | 2 | 6 | 27.74 | Q | |||
| 7 | 1 | 3 | 27.83 | Q | |||
| 8 | 2 | 8 | 27.89 | Q | |||
| 9 | 1 | 6 | 27.97 | ||||
| 9 | 2 | 2 | 27.97 | ||||
| 11 | 1 | 8 | 28.07 | ||||
| 12 | 1 | 2 | 28.15 | ||||
| 13 | 2 | 1 | 28.19 | ||||
| 14 | 1 | 1 | 28.21 | ||||
| 14 | 2 | 7 | 28.21 | ||||
| 16 | 1 | 7 | 28.33 |
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 4 | 27.09 | Q | |||
| 2 | 2 | 4 | 27.22 | Q | |||
| 3 | 3 | 5 | 27.39 | Q | |||
| 4 | 2 | 5 | 27.60 | Q | |||
| 5 | 3 | 4 | 27.80 | Q | |||
| 6 | 4 | 5 | 27.87 | Q | |||
| 7 | 4 | 3 | 27.88 | Q | |||
| 8 | 3 | 2 | 28.02 | Q | |||
| 9 | 3 | 3 | 28.14 | Q | |||
| 10 | 4 | 7 | 28.17 | Q | |||
| 11 | 4 | 2 | 28.18 | Q | |||
| 12 | 2 | 3 | 28.23 | Q | |||
| 12 | 4 | 1 | 28.23 | Q | |||
| 14 | 2 | 6 | 28.41 | Q | |||
| 15 | 3 | 6 | 28.43 | Q | |||
| 15 | 4 | 7 | 28.43 | Q | |||
| 17 | 3 | 7 | 28.68 | ||||
| 18 | 2 | 7 | 28.82 | ||||
| 19 | 2 | 1 | 29.09 | ||||
| 20 | 3 | 1 | 29.11 | ||||
| 21 | 3 | 8 | 29.23 | ||||
| 22 | 2 | 2 | 29.28 | ||||
| 23 | 1 | 4 | 29.76 | ||||
| 24 | 2 | 8 | 29.94 | ||||
| 25 | 1 | 5 | 31.79 | ||||
| 26 | 1 | 3 | 33.53 | ||||
| 27 | 1 | 6 | 34.18 | ||||
| - | 4 | 8 | DQ |