Main Characters from Australia: Claire, Walt*
*Born in US

Episodes:
"Pilot, Part 2" "Tabula Rasa", "Walkabout", "White Rabbit", "House of the Rising Sun", "The Moth", "Raised by Another", "Hearts and Minds", "Special", "Outlaws", "Numbers", "The Greater Good", "Exodus, Part 1", "Exodus, Part 2", "S.O.S.", "Two for the road", "?", "Par Avion", "Expose"

Australia is where flight 815 took off from. Throughout the show, it is revealed why the survivors were in Australia and why they were going to the United States. Many of them had gotten on the plane thinking they were going on a different one. Claire and Walt lived in Australia, but Walt was born in the US.