The ABS provides data on various subjects such as economy, labor, people, health and the environment. In addition, the ABS provides data products on the Australian Census such as geospatial data in the form of DataPacks and GeoPackages, Census Longitudinal Datasets, and mesh block counts. 

You can get data on energy, tourism, employment, economic development, housing, immigration, and procurement.

This data portal for the Australian Capital Territory (ACT) has data you can search for by category, authority, data type and directorate.

The open data portal for the New South Wales state government. You can access data on a variety of subjects along with a catalog of data you can access by API.

The data portal for the Northern Territory Government. You can look up information by organization and subject. 

The open data portal for the Queensland state government. You can find data on a variety of topics such as environment and government along with spatial data.

This data portal provides data on subjects such as administration and operations, arts and culture, council facilities. You can also find spatial data on this data portal.

The data portal for the Southern Australian government. You can search for data by organization and subject. 

The data portal for the Tasmanian government. Examples of data you can find on this data portal are climate and environment data, plant and animal data, and emergency management data.

This data portal hosts historical data and digital archival data. Examples of datasets are Hotels and Properties records (1818 - 1858) and Tasmanian convicts (1803-1893).

Data VIC is the data portal for the Victorian government. You can search for data by organization, format, and category. In addition, there is an API Developer portal for those who want to access data by API.

This data portal has data for a variety of subjects such as city council, property, sensors, and demographic data.

This is the data portal for the government of Western Australia. This data portal has data on a variety of categories such as maritime and infrastructure. In, addition, this data portal hosts a location data service and geospatial data.

The AODN Data Portal allows you to search for Australian marine and climate science data.

Maiam Nayri Wingara works with Aboriginal and Torres Strait Islanders on Indigenous Data Sovereignty and to advocate for rights using data to inform development.

This LibGuide from the University of Melbourne contains information on considerations on handling indigenous research data in terms of indigenous knowledge and the ethics and principles of handling indigenous data.

RDA is a data portal managed by the Australia Research Data Commons (ARDC) which allows one to find, access, and re-use data from over one hundred Australian research agencies, government agencies, and cultural institutions.