Yes, you can absolutely study IB in Australia! Since Australia is an English-speaking country there's hundreds of schools offering the IB programme.

Primary Years Programme

There's 139 schools offering this program. That's too many schools to list here. You should refer to the IB website for more information.

Middle Years Programme

There's 53 schools offering this program. You should refer to the IB website for more information.

Diploma Programme

There's 74 schools offering the DP program. You can find more information on the IB website.

Career Programme

IB also offers a pre-university programme only available in very few countries. Australia has 3 of such schools. You can find more information here.