The men's 50 metre breaststroke event at the 2018 Commonwealth Games was held on 8 and 9 April at the Gold Coast Aquatic Centre.

Prior to this competition, the existing world, Commonwealth and Games records were as follows: The following records were established during the competition: The heats were held on 8 April at 10:46.

[1] The semifinals were held on 8 April at 20:19.

[2] The final was held on 9 April at 21:07.

[3]