The "Developing Indigenous Early Career Researchers Project" is a three-year longitudinal study funded by the Australian Research Council that ran from January 2020 to December 2022. Its main focus was to investigate the experiences and perspectives of Indigenous Early Career Researchers working in universities across Australia. This article presents four main attributes identified by Indigenous Early Career Researchers as necessary to creating culturally safe spaces in Australian universities. These attributes include, safe to: (a) be Indigenous; (b) seek advice and make mistakes; (c) speak openly; and (d) trust. The successful implementation of these attributes requires institutional support and commitment in the form of relevant higher education policies and practices. Importantly, an overarching perspective of this article is that effective implementation of culturally safe spaces for Indigenous Early Career Researchers requires a significant shift in institutional discourse from the inclusion of Indigenous Peoples and Knowledges to recognising Indigenous Peoples as sovereign.