R8

R8 or R-8 may refer to:

• Audi R8, used from 1999–2006 by Audi for Le Mans 24 Hours race cars, and from 2007–2024 for a street legal car
  • List of Audi R8 automobiles
• R8 Machine taper, originally designed for Bridgeport Milling Machines
• R8 (Rodalies de Catalunya), a commuter rail line bypassing Barcelona, Catalonia, Spain
• R8 (SEPTA), a commuter rail line in Philadelphia, United States, which has been split into:
  • Chestnut Hill West Line: (R8 Chestnut Hill West)
  • Fox Chase Line: (R8 Fox Chase)
• R8 (RER Vaud), an S-Bahn line in the canton of Vaud
• R8: Contact with combustible material may cause fire, a risk phrase in chemistry
• HK R8, a modified version of the Heckler & Koch SL8 rifle
• Smith & Wesson M&P R8, a .357 Magnum revolver
• HP roman8, an 8-bit character set
• Kaliningrad K-8, a medium-range air-to-air missile known as R-8 in service
• Kyrgyzstan Airlines, from its IATA airline designators
• Leica R8, a 1996 manual focus 35 mm single-lens reflex camera
• Canon EOS R8, a mirrorless camera
• Radial Road 8 or R-8, an arterial road of Manila, Philippines
• Receptor 8, the eighth in line of a series of cellular receptors, generally at the end of an acronym
• Renault 8, a small family car produced in the 1960s and early 1970s
• Roland R-8, a 1988 electronic drum machine
• USS R-8 (SS-85), a 1919 United States Navy submarine
• R8, sometimes used as text/SMS speak for "Reyt", a term used in Northern England. (Short for "Alright", or "Alreyt")
• R8A (New York City Subway car)