James Magnussen, Cate Campbell and Christian Sprenger will aim to defend their World Championship titles in Kazan, Russia this summer after being named in the 38-person team.
Magnussen is looking to claim his third world title on the bounce in the 100m freestyle, while Campbell will defend her crown in the women's event, and Sprenger will try to claim gold once again in the 100m breaststroke.
On possibly claiming a third consecutive world title, Magnussen told reporters: "No-one has ever done it and it is something that keeps me motivated because pretty much everything in a 100 freestyle has been done at some stage.
"This is a pretty special goal to show that I have been able to stay at the top of world swimming for a number of years."
The Championships will get underway on July 24.
