The Malesian frog, Malaysian river frog, Malaysian peat frog, or peat swamp frog (Limnonectes malesianus) is a species of frog in the family Dicroglossidae. It is found on the Malay Peninsula (including extreme southern peninsular Thailand and Singapore), Sumatra, Java, Borneo (Indonesia, Malaysia), and a range of islands on the Sunda Shelf (Pulau Kundur, Palau Gallang, Great Natuna Island, Sinkeo Island).