Fastest swim long course relay 4 x 200 metres freestyle (female)
- Who
- Mollie O'Callaghan, Shayna Jack, Brianna Throssell, Ariarne Titmus
- What
- 7:37.50 minute(s):second(s)
- Where
- Japan (Fukuoka)
- When
- 27 July 2023
The fastest swim long course relay 4 x 200 metres freestyle (female) is 7 minutes 37.50 seconds, achieved by Australia (Mollie O'Callaghan, Shayna Jack, Brianna Throssell and Ariarne Titmus) at the 20th World Aquatics Championships in Fukuoka, Japan, on 27 July 2023.
Australia won gold at the world championships, smashing their own world record by almost two seconds. Anchor Ariarne Titmus broke her own record for fastest split in the event, clocking 1:52.41.