Rao

Rao or RAO may refer to:

People

• Rao (title), a Hindi style cognate with and equivalent to Raja, a title for a monarch or princely ruler
• Rao Bahadur, a title of honour issued by the British in India
• Rao (surname), a surname in many languages and a list of individuals
• Kamma, a Telugu caste
• Kamma Rao, list of notable Kammas bearing the tittle Rao
• Velama, a Telugu caste

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

Science

• 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

Other uses

• RAO Publishing, a Romanian publisher