As an Australian citizen, the rules surrounding entry into the country on a foreign passport can be a bit complex.

The short answer is that yes, it is generally possible for Australian citizens to enter Australia using a foreign passport, but there are some important nuances to consider.

One key factor is the citizenship status of the individual.

Australian citizens are entitled to enter and remain in Australia on any valid passport, regardless of which country issued it.

So if you hold dual citizenship, for example with both an Australian and a US passport, you can use your US passport to enter Australia without issue. - https://australiafocusguide.com/blog/can-an-australian-citizen-enter-australia-foreign-passport/?unique_id_1eep4b49

"Navigating Dual Citizenship: The Ins and Outs of an Australian Citizen Entering Australia on a Fore