Swimming at the 2018 Commonwealth Games – Men's 100 metre freestyle
The men's 100 metre freestyle event at the 2018 Commonwealth Games was held on 7 and 8 April at the Gold Coast Aquatic Centre.Records
Prior to this competition, the existing world, Commonwealth and Games records were as follows:Results
Heats
The heats were held on 7 April at 11:37.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 8 | 5 | | | 48.81 | Q |
| 2 | 6 | 4 | | | 48.85 | Q |
| 3 | 8 | 3 | | | 48.96 | Q |
| 4 | 8 | 4 | | | 48.99 | Q |
| 5 | 7 | 5 | | | 49.06 | Q |
| 6 | 7 | 3 | | | 49.11 | Q, NR |
| 7 | 6 | 5 | | | 49.17 | Q |
| 8 | 7 | 4 | | | 49.20 | Q |
| 9 | 6 | 3 | | | 49.41 | Q |
| 10 | 7 | 6 | | | 49.65 | Q |
| 10 | 8 | 7 | | | 49.65 | Q |
| 12 | 7 | 2 | | | 49.72 | Q |
| 13 | 6 | 7 | | | 49.77 | Q |
| 14 | 6 | 2 | | | 49.79 | Q |
| 15 | 8 | 6 | | | 49.82 | Q |
| 16 | 6 | 6 | | | 49.90 | Q |
| 17 | 5 | 4 | | | 49.93 | |
| 18 | 7 | 7 | | | 50.02 | |
| 19 | 7 | 1 | | | 50.04 | |
| 20 | 6 | 8 | | | 50.06 | |
| 21 | 7 | 8 | | | 50.22 | |
| 22 | 5 | 2 | | | 50.47 | |
| 23 | 6 | 1 | | | 50.56 | |
| 24 | 5 | 3 | | | 50.74 | |
| 25 | 8 | 2 | | | 50.79 | |
| 26 | 8 | 1 | | | 50.80 | |
| 27 | 5 | 5 | | | 50.91 | |
| 28 | 5 | 6 | | | 51.04 | |
| 29 | 4 | 4 | | | 51.12 | |
| 30 | 5 | 8 | | | 51.66 | |
| 31 | 4 | 3 | | | 51.71 | |
| 32 | 5 | 1 | | | 51.94 | |
| 33 | 3 | 7 | | | 51.95 | |
| 34 | 8 | 8 | | | 52.08 | |
| 35 | 5 | 7 | | | 52.20 | |
| 36 | 4 | 6 | | | 52.97 | |
| 37 | 4 | 7 | | | 53.30 | |
| 38 | 2 | 6 | | | 53.53 | |
| 39 | 2 | 3 | | | 53.96 | |
| 40 | 3 | 4 | | | 54.02 | |
| 41 | 4 | 8 | | | 54.21 | |
| 42 | 3 | 6 | | | 54.35 | |
| 43 | 3 | 3 | | | 54.56 | |
| 44 | 3 | 5 | | | 54.57 | |
| 45 | 2 | 1 | | | 54.91 | |
| 46 | 4 | 2 | | | 54.95 | |
| 47 | 2 | 5 | | | 55.21 | |
| 48 | 2 | 4 | | | 55.90 | |
| 49 | 3 | 8 | | | 56.12 | |
| 50 | 3 | 1 | | | 56.33 | |
| 51 | 3 | 2 | | | 57.33 | |
| 52 | 2 | 7 | | | 57.56 | |
| 53 | 2 | 2 | | | 58.67 | |
| 54 | 1 | 3 | | | 58.95 | |
| 55 | 1 | 4 | | | | |
| 56 | 1 | 5 | | | | |
| 4 | 1 | | | | |
| 4 | 5 | | | | |
Semifinals
The semifinals were held on 7 April at 20:59.Semifinal 2
Final
The final was held on 8 April at 19:43.
| Rank | Lane | Name | Nationality | Time | Notes |
| 6 | | | 48.02 | |
| 5 | | | 48.15 | |
| 3 | | | 48.15 | |
| 4 | 4 | | | 48.44 | |
| 5 | 1 | | | 48.60 | |
| 6 | 2 | | | 48.62 | |
| 7 | 7 | | | 48.80 | |
| 8 | 8 | | | 49.30 | |
