| Event: | Men's 50 metre butterfly |
| Championship: | 2015 World Aquatics Championships |
| Dates: | 2 August (heats and semifinals) 3 August (final) |
| Competitors: | 80 |
| Nations: | 77 |
| Win Value: | 22.97 |
| Gold: | Florent Manaudou |
| Goldnoc: | FRA |
| Silver: | Nicholas Santos |
| Silvernoc: | BRA |
| Bronze: | László Cseh |
| Bronzenoc: | HUN |
| Bronze2: | Konrad Czerniak |
| Bronzenoc2: | POL |
| Prev: | 2013 |
| Next: | 2017 |
The Men's 50 metre butterfly competition of the swimming events at the 2015 World Aquatics Championships was held on 2 August with the heats and the semifinals and 3 August with the final.[1]
Prior to the competition, the existing world and championship records were as follows.
The heats were held at 10:44.[2]
| Rank | Heat | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|---|
| 1 | 9 | 5 | 23.15 | Q | |||
| 2 | 8 | 2 | 23.32 | Q, NR | |||
| 3 | 9 | 3 | 23.36 | Q | |||
| 4 | 8 | 6 | 23.38 | Q, NR | |||
| 5 | 7 | 6 | 23.40 | Q, NR | |||
| 6 | 8 | 4 | 23.41 | Q | |||
| 7 | 9 | 2 | 23.43 | Q | |||
| 8 | 8 | 3 | 23.45 | Q | |||
| 9 | 8 | 5 | 23.49 | Q | |||
| 9 | 9 | 4 | 23.49 | Q | |||
| 11 | 7 | 4 | 23.58 | Q | |||
| 12 | 7 | 2 | 23.59 | Q | |||
| 13 | 7 | 7 | 23.61 | Q | |||
| 14 | 7 | 5 | 23.66 | Q | |||
| 15 | 7 | 8 | 23.67 | Q | |||
| 15 | 9 | 0 | 23.67 | Q, NR | |||
| 17 | 7 | 1 | 23.75 | ||||
| 18 | 7 | 3 | 23.81 | ||||
| 19 | 8 | 1 | 23.83 | ||||
| 20 | 6 | 9 | 23.85 | ||||
| 21 | 9 | 6 | 23.87 | ||||
| 21 | 9 | 8 | 23.87 | ||||
| 23 | 9 | 1 | 23.91 | ||||
| 24 | 8 | 9 | 23.96 | ||||
| 25 | 8 | 0 | 24.00 | ||||
| 26 | 6 | 5 | 24.03 | ||||
| 27 | 7 | 9 | 24.12 | ||||
| 28 | 6 | 8 | 24.13 | ||||
| 28 | 7 | 0 | 24.13 | ||||
| 30 | 6 | 4 | 24.18 | ||||
| 30 | 8 | 8 | 24.18 | ||||
| 32 | 5 | 4 | 24.19 | ||||
| 33 | 6 | 1 | 24.20 | ||||
| 34 | 6 | 2 | 24.24 | ||||
| 35 | 6 | 7 | 24.28 | ||||
| 36 | 6 | 6 | 24.34 | ||||
| 37 | 9 | 9 | 24.49 | ||||
| 38 | 6 | 3 | 24.51 | ||||
| 39 | 5 | 5 | 24.60 | ||||
| 40 | 6 | 0 | 24.63 | ||||
| 41 | 4 | 5 | 24.69 | ||||
| 42 | 8 | 7 | 24.73 | ||||
| 43 | 5 | 1 | 24.76 | ||||
| 44 | 9 | 7 | 24.83 | ||||
| 45 | 5 | 3 | Anthony John Barbar | 24.88 | NR | ||
| 46 | 5 | 2 | 25.16 | ||||
| 47 | 5 | 6 | 25.33 | ||||
| 48 | 5 | 9 | 25.42 | ||||
| 49 | 5 | 7 | 25.52 | ||||
| 50 | 4 | 3 | 25.61 | ||||
| 51 | 4 | 6 | 25.91 | ||||
| 52 | 5 | 8 | 25.94 | ||||
| 53 | 3 | 5 | 26.13 | ||||
| 54 | 5 | 0 | 26.19 | ||||
| 55 | 4 | 4 | 26.41 | ||||
| 56 | 4 | 1 | 26.93 | ||||
| 57 | 4 | 2 | 27.08 | ||||
| 58 | 4 | 0 | 27.42 | ||||
| 59 | 3 | 4 | 27.66 | ||||
| 60 | 4 | 8 | 27.72 | ||||
| 61 | 3 | 6 | 27.77 | ||||
| 62 | 3 | 2 | 27.99 | ||||
| 63 | 4 | 7 | 28.31 | ||||
| 64 | 4 | 9 | 28.39 | ||||
| 65 | 3 | 0 | 28.67 | ||||
| 66 | 3 | 3 | 28.81 | ||||
| 67 | 2 | 2 | 29.66 | ||||
| 68 | 3 | 1 | 29.82 | ||||
| 69 | 2 | 5 | 30.15 | ||||
| 70 | 1 | 6 | 30.20 | ||||
| 71 | 3 | 8 | 30.44 | ||||
| 72 | 2 | 6 | 30.53 | ||||
| 73 | 2 | 3 | 30.92 | ||||
| 74 | 3 | 7 | 30.95 | ||||
| 75 | 2 | 8 | 31.09 | ||||
| 76 | 3 | 9 | 31.14 | ||||
| 77 | 2 | 4 | 31.53 | ||||
| 78 | 1 | 3 | 32.36 | ||||
| 79 | 1 | 5 | 35.21 | ||||
| 80 | 2 | 1 | 35.30 | ||||
| 1 | 4 | ||||||
| 2 | 7 |
The semifinals were held on 2 August at 18:07.[3]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 3 | 23.05 | Q | |||
| 2 | 4 | 23.06 | Q, NR | |||
| 3 | 5 | 23.07 | Q, NR | |||
| 4 | 2 | 23.15 | Q | |||
| 5 | 1 | 23.29 | Q | |||
| 6 | 7 | 23.34 | NR | |||
| 7 | 6 | 23.49 | ||||
| 8 | 8 | 23.60 | NR |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 22.84 | Q, =NR | |||
| 2 | 7 | 23.24 | Q | |||
| 3 | 3 | 23.27 | Q, AS | |||
| 4 | 8 | 23.30 | NR | |||
| 5 | 2 | 23.41 | ||||
| 6 | 5 | 23.44 | ||||
| 6 | 6 | 23.44 | ||||
| 8 | 1 | 23.74 |
The final was held on 3 August at 18:17.[4]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 22.97 | |||||
| 5 | 23.09 | |||||
| 3 | 23.15 | |||||
| 6 | 23.15 | |||||
| 5 | 2 | 23.18 | ||||
| 6 | 8 | 23.21 | ||||
| 7 | 1 | 23.25 | AS | |||
| 8 | 7 | 23.39 |