Leptolalax gracilis is a frog species in the family Megophryidae. It is endemic to northern Borneo: Brunei, Kalimantan (Indonesia), and Sarawak (Malaysia). Earlier record from the Malay Peninsula and Thailand refer to other species (at least Leptolalax platycephalus, an unnamed species, and possibly Leptolalax melanoleucus). Its natural habitats are tropical moist lowland forests, moist montane forests, and rivers. It is becoming rare due to habitat loss. References gracilis Endemic fauna of Borneo Amphibians of Brunei Amphibians of Indonesia Amphibians of Malaysia Taxa named by Albert Günther Amphibians described in 1872 Taxonomy articles created by Polbot Taxobox binomials not recognized by IUCN Amphibians of Borneo