Rao

Rao may refer to:

People

Rao means 'Raja' or 'King'.

• Rao (title), a surname given to the one equivalent to Raja, a title for a monarch or princely ruler.
• Rao of Cutch, a title of rulers of former Cutch State.
• Rao Bahadur, a title of honour issued by the British in India
• Rao (surname), a surname in many languages and a list of individuals

Places

• Råö, a locality in Kungsbacka Municipality, Halland County, Sweden
• Rao's, an Italian restaurant in New York City, USA
• Rao, West Sumatra, one of the districts of West Sumatra, Indonesia

Science

• Rao (wasp), a genus in the subfamily Platygastrinae
• Cramér–Rao bound, a statistical concept
• Rao–Blackwell theorem, a theorem in statistics
• RAO, acronym for the Recent African origin of modern humans, 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

In fiction

• Rao (Greyhawk), god of peace, reason, and serenity in Dungeons & Dragons: World of Greyhawk
• Raō, the Japanese name for Raoh, character in Fist of the North Star
• Rao (comics), a fictional star in the DC Universe; Superman's planet Krypton revolved around it

Other uses

• RAO Publishing, a Romanian publisher