Swimming at the 2018 Mediterranean Games – Women's 4 × 100 metre freestyle relay

The women's 4 × 100 metre freestyle relay event at the 2018 Mediterranean Games was held on 24 June 2018 at the Campclar Aquatic Center.

Records
Prior to this competition, the existing world and Mediterranean Games records were as follows:

The following records were established during the competition:

Results
The final was held at 19:06.