Leptopelis parkeri is a species of frog in the family Arthroleptidae. It is endemic to Tanzania and known from the Eastern Arc Mountains. Specifically, it has been recorded from Uluguru, Udzungwa, East and West Usambara, Nguru, and South Pare Mountains. Common names Parker's tree frog and Parker's forest treefrog have been coined for it. It is named after Hampton Wildman Parker, a British zoologist and herpetologist from the Natural History Museum, London.