Omanosaura cyanura, also known commonly as the blue-tailed lizard and the blue-tailed Oman lizard, is a species of lizard in the family Lacertidae. The species is native to the eastern end of the Arabian Peninsula.
O. cyanura is found in Oman and the United Arab Emirates.
O. cyanura has been found living along watercourses which flow down from the Hajar Mountains of northern Oman and the eastern United Arab Emirates, from sea level up to elevation.