The Men's 1500 metre freestyle competition of the swimming events at the 2015 World Aquatics Championships was held on 8 August with the heats and 9 August with the final.

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

The heats were held at 10:48.

[2] The final was held on 9 August at 18:20.

[3]