Yes, as a foreigner with an investment property in Australia, you are generally required to lodge an Australian tax return. The Australian Taxation Office (ATO) has specific rules and obligations for non-resident property owners. You will need to declare your rental income, and depending on your circumstances, you may be eligible for certain tax deductions related to your property expenses. It’s advisable to consult with a tax professional, such as Investax, or the ATO to ensure you comply with Australian tax laws and benefit from any available tax concessions.