The men's 1500 metre freestyle competition of the 2018 FINA World Swimming Championships (25 m) was on 15 and 16 December 2018.

[1] Prior to the competition, the existing world and championship records were as follows.

The following records were established during the competition: The heats were started on 15 December at 12:11.

[2] The final was held on 16 December at 18:07.

[3]