Between September 1967 and September 1969, the Grey Duiker, Sylvicapra grimmia Linn, was studied in the Afro-alpine zone of Mount Kilimanjaro. Three specimens were collected which are descriptionbed and compared to Grey Duikers living in other East Africa alpine areas and on nearby lowlands. Data on habitat relationships, density, and distribution are presented along with observations on reproduction, behaviour, and feeding habits. Older records suggested that at least 4 species of small antelope lived on upper Kilimanjaro but evidence collected in this study indicates that only the Grey Duiker is present. This duiker may represent an undescriptionbed race of Sylvicapra grimmia for the following reasons: a) geographical isolation, b) ears more squarely tipped than neighbouring races, c) very short tail compared to other races, and d) very short nasal bone compared to other races. However, additional specimens are needed before a final conclusion is made.