BSR is an abbreviation that has a number of meanings:

  • Berkeley Science Review, a magazine published by graduate students at UC Berkeley
  • Birmingham Sound Reproducers, a British audio, electronics and record player manufacturer; also known as BSR McDonald and, later, Astec Power Supply
  • Bit Scan Reverse, an x86 architecture instruction; see the Find First Set instruction
  • Bootstrap Router, a term used in IP Multicast
  • Brain stimulation reward
  • The British School at Rome
  • The Broadband Services Router
  • Brown Student/Community Radio, Providence, RI student and community radio station
  • Buddhist Studies Review, a journal published by the UK Association for Buddhist Studies
  • Business for Social Responsibility, a non-profit that promotes social responsibility in businesses
  • Bun Spliff Regular - A non profit organisation of herbalists
  • Blood Stained Reality - A hardcore/punk band from San Diego