R71 may refer to:

• Referendum 71, a ballot measure in Washington State, November 3, 2009
• R71 (Limpopo), a regional route in South Africa
• BMW R71, motorcycle on which the IMZ-Ural is based
• HMS Vengeance (R71), a 1945 British Royal Navy Colossus-class aircraft carrier
• Plant small nucleolar RNA R71, a non-coding RNA molecule
• Lockheed SR-71 Blackbird, an American reconnaissance aircraft
• R71 (star), star located in the Large Magellanic Cloud

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