2021 FINA World Swimming Championships (25 m) – Men's 1500 metre freestyle

The Men's 1500 metre freestyle competition of the 2021 FINA World Swimming Championships (25 m) was held on 20 and 21 December 2021.

Records
Prior to the competition, the existing world and championship records were as follows.

The following new records were set during this competition:

Heats
The heats were started on 20 December at 11:58.

Final
The final was held on 21 December at 18:06.