ABSTRACT Sustainable land utilisation is very important prerequisite for the survival of humanity. Land conservation and sustainable utilisation is the current issue as the result of ecological factors such as population pressure resulted in higher need for additional natural resources, global warming, climate change, and the threat of environmental contamination, biodiversity loss, changes in landscape, monetary globalisation, power safety, water delivery, and escalating conûict among socio-cultural, political-monetary, and ecological goals. The present paper is qualitative in nature and both primary and secondary source data were used to elicit the information on the sustainable utilisation of land among the Guji community in Oromia region of southern Ethiopia. The study reveals that Guji Gadaa system is the time proven indigenous institution responsible for making customary rules and regulations, management, regulating and controlling mechanisms to ensuring the sustainability of natural resources in general and land in particular