Data.gov.au - Public datasets from many Australian government agencies.
Research Data Australia - Details of Data sets from over one hundred Australian research organisations
Atlas of Living Australia - A collaborative aggregator of biodiversity knowledge.
Australian Ocean Data Network - Interactive maps, geospatial datasets, satellite imagery. This is a primary access point for the Australian marine community.
CSIRO Data Access Portal - Data published by CSIRO, across a range of disciplines
Australian National Map - An Australian government sponsored portal of government spacial data.
ATSIDA -The Aboriginal and Torres Strait Islander Data Archive works closely with researchers to support the management and archiving of research data.