The regulations regarding the ownership and possession of samurai swords, also known as Japanese swords, in Australia are subject to strict restrictions and regulations. In general, the importation, sale, possession, and use of swords with a blade length exceeding a certain limit (typically 50 centimeters or 19.7 inches) are heavily regulated.

Each state and territory in Australia has its own specific laws and regulations regarding the ownership and possession of swords. These laws can vary, so it is important to research and understand the specific regulations in your state or territory.

In some cases, owning a samurai sword may require a specific permit or license. The possession of a samurai sword without the necessary permits or licenses may be considered a serious offense under Australian law.

It is highly recommended to consult with local law enforcement or legal authorities in your state or territory to obtain accurate and up-to-date information regarding the ownership and possession of samurai swords in Australia. They can provide guidance on the specific requirements, permits, or licenses necessary to legally own and possess such weapons.