This study was conducted to provide a checklist of amphibian species in the Idanre Forest Ecosystem (lowland - Idanre Forest Reserve and highland - Idanre Hills) based on field surveys carried out during June - July 2018. A total of 218 individuals, comprising 11 species from six genera belonging to five families, were observed. A high number of individuals and species were observed in the lowland (Idanre Forest Reserve) compared to the highland (Idanre Hills) region. All species recorded from this site are categorized as Least Concern in the IUCN Red List, except for the critically endangered and endemic Sclerophys perreti. We acknowledge that this study is preliminary; thus, we offer recommendations for a comprehensive survey to unveil the amphibian species richness and abundance as well as patterns of species’ adaptation.