The purpose of this thesis is to present a fuller analysisrnof the phonology of the Mecha dialect of Oromo. The paper has sixrnsections. In the first section the relevant liter~ture is reviedrnin brief. The second section treats the description of the phonemes,rntheir allophones and the distributions of the phonemes. The thirdrnsection deals with the phonotactics and syllabification. A frequencyrncount of phonemes based on the Swaddesh Basic VocGbulary and on anrnoriginal story in Oromo, k~amale:f ye:y:i: is also presented inrnthis section.rnThe fourth section deals with the major suprasegmental phenomenarnsuch as length, stress, pitch and terminal contours. Lexical pitchrnand stress are non-phonemic but grammatically significant.rnMorphophonemic processes involving assimilation of consonants,rnepenthesis, metathesis, deletion, vowel shortening and reduplicationrnare dealt with in the fifth section.rnThe concluding section presents a summary of the findings ofrnthe analysi