| Event: | Men's 50 metre backstroke |
| Championship: | 2017 World Aquatics Championships |
| Dates: | 29 July (heats and semifinals) 30 July (final) |
| Venue: | Danube Arena |
| Location: | Budapest, Hungary |
| Competitors: | 55 |
| Nations: | 46 |
| Win Value: | 24.35 |
| Gold: | Camille Lacourt |
| Gold Nation: | FRA |
| Silver: | Junya Koga |
| Silver Nation: | JPN |
| Bronze: | Matt Grevers |
| Bronze Nation: | USA |
| Prev: | 2015 |
| Next: | 2019 |
The Men's 50 metre backstroke competition at the 2017 World Championships was held on 29 and 30 July 2017.[1] [2]
Prior to the competition, the existing world and championship records were as follows.
The heats were held on 29 July at 09:51.[3]
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
|---|---|---|---|---|---|---|
| 1 | 6 | 5 | 24.54 | Q | ||
| 2 | 5 | 4 | 24.58 | Q | ||
| 3 | 6 | 4 | 24.78 | Q | ||
| 7 | 5 | Q | ||||
| 5 | 5 | 3 | 24.80 | Q | ||
| 6 | 7 | 7 | 24.86 | Q | ||
| 7 | 4 | Q | ||||
| 8 | 5 | 5 | 24.88 | Q | ||
| 9 | 5 | 6 | 24.93 | Q | ||
| 10 | 6 | 6 | 24.94 | Q, NR | ||
| 11 | 5 | 1 | 24.99 | Q | ||
| 12 | 5 | 0 | 25.10 | Q | ||
| 7 | 3 | Q | ||||
| 14 | 6 | 3 | 25.13 | Q | ||
| 15 | 4 | 3 | 25.16 | Q | ||
| 16 | 6 | 1 | 25.17 | Q | ||
| 17 | 6 | 2 | 25.23 | |||
| 18 | 6 | 8 | 25.24 | |||
| 7 | 6 | |||||
| 20 | 7 | 2 | 25.27 | |||
| 21 | 7 | 8 | 25.31 | |||
| 22 | 5 | 8 | 25.44 | |||
| 23 | 5 | 2 | 25.48 | |||
| 24 | 6 | 7 | 25.52 | |||
| 25 | 4 | 4 | 25.55 | |||
| 7 | 1 | |||||
| 27 | 4 | 6 | 25.56 | |||
| 5 | 7 | |||||
| 6 | 0 | |||||
| 30 | 7 | 9 | 25.58 | |||
| 31 | 7 | 0 | 25.63 | |||
| 32 | 6 | 9 | 25.64 | |||
| 33 | 4 | 8 | 25.71 | |||
| 34 | 4 | 5 | 25.78 | |||
| 35 | 5 | 9 | 25.90 | |||
| 36 | 4 | 2 | 25.94 | |||
| 37 | 4 | 7 | 26.02 | |||
| 38 | 4 | 9 | 26.05 | |||
| 39 | 3 | 4 | 26.27 | |||
| 40 | 3 | 3 | 26.42 | |||
| 41 | 3 | 5 | 26.57 | |||
| 42 | 3 | 6 | 26.60 | |||
| 43 | 3 | 7 | 27.17 | |||
| 44 | 3 | 2 | 27.67 | |||
| 45 | 3 | 1 | 27.84 | |||
| 46 | 2 | 7 | 28.50 | |||
| 47 | 1 | 4 | 28.97 | |||
| 48 | 3 | 8 | 29.95 | |||
| 49 | 3 | 0 | 30.69 | |||
| 50 | 1 | 3 | 30.72 | |||
| 51 | 2 | 6 | 31.96 | |||
| 52 | 2 | 1 | 33.14 | |||
| 53 | 2 | 8 | 33.89 | |||
| 54 | 2 | 5 | 34.07 | |||
| 55 | 3 | 9 | 34.47 | |||
| 1 | 5 | |||||
| 2 | 4 | |||||
| 2 | 2 | |||||
| 2 | 3 | |||||
| 4 | 0 |
The semifinals were held on 29 July at 18:45.[4]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 24.30 | Q | |||
| 2 | 5 | 24.65 | Q | |||
| 3 | 2 | 24.74 | Q, NR | |||
| 4 | 3 | 24.84 | Q | |||
| 5 | 6 | 24.86 | ||||
| 6 | 1 | 24.91 | ||||
| 7 | 7 | 25.02 | NR | |||
| 8 | 8 | 25.04 | NR |
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 1 | 4 | 24.44 | Q | |||
| 2 | 5 | 24.67 | Q | |||
| 3 | 6 | 24.70 | Q | |||
| 4 | 3 | 24.81 | Q | |||
| 5 | 2 | 24.88 | ||||
| 5 | 7 | 24.88 | ||||
| 7 | 1 | 24.95 | ||||
| 8 | 8 | 25.13 | =NR |
The final was held on 30 July at 18:05.[5]
| Rank | Lane | Name | Nationality | Time | Notes | |
|---|---|---|---|---|---|---|
| 4 | 24.35 | |||||
| 5 | 24.51 | |||||
| 3 | 24.56 | |||||
| 4 | 1 | 24.61 | ||||
| 5 | 6 | 24.74 | ||||
| 6 | 2 | 24.77 | ||||
| 7 | 7 | 24.83 | ||||
| 8 | 8 | 24.85 |