Rao may refer to: Geography Rao, West Sumatra, one of the districts of West Sumatra, Indonesia Råö, a locality in Kungsbacka Municipality, Halland County, Sweden Transport Dr. Leite Lopes–Ribeirão Preto State Airport , IATA code RAO, serving Ribeirão Preto, Brazil Fictional entities Rao (comics), a fictional star in the DC Universe; Superman's planet Krypton revolved around it Rao (Greyhawk), god of peace, reason, and serenity in Dungeons & Dragons: World of Greyhawk Raō, the Japanese name for Raoh, a character in Fist of the North Star Mathematics Cramér–Rao bound, a statistical concept Rao–Blackwell theorem, a theorem in statistics Science Rao (insect), a genus of wasps in the subfamily Platygastrinae Recent African origin of modern humans (RAO), a paleoanthropological theory Recurrent airway obstruction (RAO), a respiratory disease in horses Response amplitude operator (RAO), a function relating a response to an input given the input frequency Titles Rao (title), cognate Hindi variations of the (originally Hindu) title Raja(h) Rao Bahadur, a title of honour issued by the British in India Other uses Rao (Indian surname) Rao (Chinese surname) Rao language Rao's, an Italian restaurant in New York City, USA named after its founder, Joshua Anthony Rao