This study deals with the vascular plant diversity of sweetgum (Liquidambar orientalis L.) forest which is one of the important natural areas of Burdur province. The research area is located in the Bucak district of Burdur province, which is placed in the C3 square according to Davis’ grid system. In the study, 123 genera belonging to 61 families, 134 species and subspecies taxa belonging to these genera were determined. The majority of the taxa are phytogeographically Mediterranean element (14.92%), and their endemism rate is 2.98%. Among the taxa, the family containing the highest number of species is Asteraceae (10.44%), and it is followed by Lamiaeae (8.95%) and Poaceae (7.46%). The aim of this study is to contribute to the studies which have intended to determine the biodiversity in Turkey and to protect important natural areas.