Riu or RIU may refer to:
People
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Riu (surname)
Yoo or Yu, or sometimes Ryu or Ryoo, is the English transcription of several Korean surnames written as or in hangul. As of 2000, roughly a million people are surnamed Yoo in South Korea, making up approximately 2% of the population. Of those, ...
, a Korean surname
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Giovanni de Riu (1925–2008), Italian racing driver
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Ramon Riu i Cabanes (1852–1901), Bishop of Urgell and ex officio Co-Prince of Andorra
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Victor Riu (born 1985), French golfer
Other uses
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Rancho Murieta Airport, in California, United States
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Riau Airlines, defunct Indonesian airline
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Riu de Cerdanya, in Catalonia, Spain
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RIU Hotels, a Spanish hotel chain
{{disambiguation, surname