The study investigates the Ethnobotanical inventory of Olumo Rock tourist centre in Abeokuta, Ogun State. Olumo rock is a geotourist site capable of promoting recreation, tourism and improving the economics of Abeokuta in particular and Ogun State in General but the documentation of plant inventory in the study area is scanty. Therefore, percentage frequency, part used for medicinal purposes and their families were investigated. e inhabitant of the study area using, five respondents in which majority of the respondents there were females 4 (80%) while only 1 (20%) was male. Thirteen plants belonging to 11 families namely; Bombacaceae, Asclepiadaceae, Euphorbiaceae, Moraceae, Bignoniaceae, Nephrolepidaceae, Meliaceae, Moringaceae, Rosaceae, Piperaceae and Solanaceae. Meliaceae and Moraceae had highest frequency 2 (15.38%) while Bombacaceae, Asclepiadaceae, Bignoniaceae, Nephrolepidaceae, Moringaceae, Rosaceae, Piperaceae, Euphorbiaceae and Solanaceae had the least 1 (7.69%) species. Shrubs and tree were the most abundant habits while herbs were rare. Some of the plants were used to cure Malaria, Abdominal pains, Sexually Transmitted Infections, Fertility, Leprosy, Pregnancy Booster and Diarrhea. The study concluded that Olumo rock is a great tourist center capable of international recognition and will surely be of great assistance to students/researchers and tourists if the management which is richly endowed with flora resources will label the species found in the centre using this work.