Raorchestes tinniens, also known as the spotted bush frog, black bush frog, and Rao's bubble-nest frog (the latter two referring to species now considered junior synonyms of R. tinniens), is a species of frog in the family Rhacophoridae. It is endemic to the Nilgiri Hills, a part of the Western Ghats, in Tamil Nadu and Kerala, southern India. It has a rather complicated taxonomic history, and there is still an open issue whether Ixalus montanus from Kudremukh (Karnataka), now in synonymy with Raorchestes tinniens, is indeed a valid species.