The Royal Association of Justices is the official association for Justices of the Peace in South Australia and represents its members in policy and administrative matters relevant to the role and function of Justices of the Peace.

The Association consists of a Council elected by its members, presided over by a President elected by the Council, and an administrative office for the conduct of the business of the Association.

The role of the Association is to represent its members for the furtherance of the services Justices of the Peace provide to the community.

The formation of a Justices' Association was first suggested about the year 1897 and assumed practical shape on August 8th,1898, when at a large meeting of Justices held in the Adelaide Town Hall Reception Room and presided over by the Lord Mayor, Mr. Chas. Tucker, MP, it was resolved that a Justices' Association be formed, to be worked on the lines of the Municipal Association and other local institutions for the purpose of assisting Justices to acquire a more correct knowledge of their duties.