Community media act as vital alternatives to hegemonic media practices and products, providing a much-needed space for marginalised voices in a homogenised and globalised media landscape. While there are strong and long-standing examples of Indigenous community media around the world, there remains a western-centric bias in community radio research, both geographically and epistemologically. This research seeks to address this gap by exploring community radio as a vehicle for and guardian of Indigenous knowledge systems in the Global South. Drawing on an ethnographic case study of Radio Dhimsa, an Indigenous community radio station in the Indian state of Odisha, the findings reveal the critical role of Radio Dhimsa in fostering community participation, amplifying marginalised voices, and countering the dominance of expert-driven knowledge cultures. By highlighting the interplay between community media and Indigenous knowledge systems, this research contributes to the emerging scholarship on community media in the Global South and underscores the transformative potential of community radio as a tool for cultural preservation and participatory communication.