BLR may refer to:

  • Base Lending Rate
  • Bad Lip Reading, a viral video series consisting of improperly lip-synced videos of famous musicians and politicians.
  • Belarus
  • Bengaluru International Airport; and previously HAL International Airport. BLR is the IATA code of the primary airport in Bangalore, India
  • Beta-lactam Ring Records
  • Blacklands Railroad
  • Blang language, ISO 639:b language designation
  • Breech loading rifle
  • Browning BLR, a hunting rifle
  • Burkitt lymphoma receptor 1 (BLR1), also known as CXCR5
  • Blacklight: Retribution, a free first-person shooter game developed by Zombie Studios