The men's 50 metre backstroke event at the 2018 Commonwealth Games was held on 7 and 8 April at the Gold Coast Aquatic Centre.

Prior to this competition, the existing world, Commonwealth and Games records were as follows: The heats were held on 7 April at 11:15.

[1] The semifinals were held on 7 April at 20:19.

[2] The final was held on 8 April at 21:31.

[3]