Leptolalax oshanensis (Oshan metacarpal-tubercled toad or pigmy crawl frog) is a frog species in the family Megophryidae. It is endemic to southern-central China (Guizhou, Hubei, and Sichuan provinces). Its type locality is Mount Emei (). The same mountain has given the species its name, although this is now obscured because Oshan is a contraction of the transliteration that is no longer widely used, Omeishan. It has also been reported from Thailand and Laos but these are now considered to represent Leptolalax minimus.