Leptomyrmex tibialis is a species of ant in the genus Leptomyrmex. First described by Carlo Emery in 1895 as Leptomyrmex nigriventris tibialis, the species is endemic to Australia,[1] and found in both New South Wales and Queensland.[2] The arguments for synonymy were made by Lucky and Ward, and the decision was accepted by the Australian Faunal Directory.[2]