Australia competed at the 2023 World Aquatics Championships in Fukuoka, Japan from 14 to 30 July.
The following is the list of number of competitors participating at the Championships per discipline.
Australia's artistic swimming team consisted of eleven athletes (all women).
Australia's diving team consisted of nine athletes (4 men and 5 women). Lauren Flint was originally named in the team, however withdrew days before competition due to breaking her elbow in training.
Australia's high diving team consisted of three athletes (all women).
Australia's open water swimming team consisted of eight athletes (4 men and 4 women).
Australia's swimming team consisted of thirty-one athletes (16 men and 15 women).