Swimming at the 2018 Commonwealth Games – Men's 100 metre butterfly

The men's 100 metre butterfly event at the 2018 Commonwealth Games was held on 8 and 9 April at the Gold Coast Aquatic Centre.

Records
Prior to this competition, the existing world, Commonwealth and Games records were as follows:

The following records were established during the competition:

Heats
The heats were held on 8 April at 11:35.

Semifinals
The semifinals were held on 8 April at 20:53.

Final
The final was held on 9 April at 21:59.