This thesis is a study of Bunuba, a language spoken around the township of Fitzroy Crossing in the West Kimberley region of Western Australia. Chapter 1 introduces Bunuba by discussing the location and sociolinguistic information and providing the reader with background to the language and its speakers. In this Chapter details of different speech registers and dialects are introduced and a brief review is undertaken of the previous research which has been carried out on the language and its speakers. Also included is a discussion of some contemporary uses of Bunuba and a description of my fieldwork methodology. This Chapter also sets this work apart from previous research on Bunuba, particularly that undertaken by Alan Rumsey. The differences between his work and the work presented in this thesis are outlined in Chapter 1. Chapter 2 describes the structure of the language detailing phonology and morphophonological procedures, word classes and nominal morphology. Chapter 3 discusses the formal structure of Bunuba verbal morphology.