The men's 4 × 100 metre medley relay event at the 2024 World Aquatics Swimming Championships (25 m) was held on 15 December 2024 at the Duna Arena in Budapest, Hungary.
Records.
Prior to the competition, the existing world and championship records were as follows.
The following new records were set during this competition:
Results.
Heats.
The heats were started at 10:41.
Final.
The final was held at 19:10.