Connection to culture in Australian First Peoples children is an important social determinant of health in child development and wellbeing. The current study draws upon the collective knowledge of Australian First Peoples Elders and community leaders to collaboratively develop the first theoretical conceptualisation of connection to culture in Australian First Peoples children. Through participatory action research, we integrated both Western and Indigenist methodologies. One-on-one qualitative narrative interviews were conducted with six Australian First Peoples Elders and community leaders. Their knowledge was summarised through a process of Western thematic analysis and Indigenist arts-based participatory analysis to identify core concepts and mechanisms of connection to culture in First Peoples children. The outcome was a theory of connection to culture in Australian First Peoples children. By better understanding how children connect to culture, we can better support children in connecting to culture, targeting an important factor of health and wellbeing.