XR

XR or Xr may refer to:

• Cairo (graphics), the original name for a graphics library software
• XR may be mistakenly used for the labarum (Chi-Rho monogram) of Christ
• Cross-reference
• Exchange rate
• Extended release in certain medications, for example Adderall XR
• IOS XR, the software for Cisco Systems' high-end carrier-grade routers
• Index register of a CPU is sometime labelled XR
• The Honda XR series, a line of off-road motorcycles manufactured by Honda
• Extrapolated Runs, a baseball statistic
• Skywest Airlines, IATA airline code
• XR (Ford Australia), a designation given to some high performance vehicles sold by Ford Australia
  • Other XR's were produced by Ford Europe and Ford South Africa
• XR is one of the main characters on Buzz Lightyear of Star Command