SBR

• Sequencing batch reactor, for wastewater treatment
• Spectral band replication, to enhance audio codecs
• Shooting and bouncing rays, in computational electromagnetics
• Styrene-butadiene rubbers
• Serum bilirubin, in blood
• Screen-to-body ratio, a measurement for smartphones and tablets

• Short-barreled rifle, US legal designation
• Space-based radar, on satellites

• SBR Creative Media, advising radio stations
• Specialised Bulk Rail, a subsidiary of SCT Logistics in Australia
• Sportsbook Review, American sportsbook review website
• Station biologique de Roscoff, French oceanography station
• Stratford on Avon and Broadway Railway, England
• Stone Brothers Racing, a former Australian motor racing team

• Skills-based routing, of phone calls
• Standard Business Reporting, programs to reduce business regulations
• Shanghai Business Review
• Samuel Butler Room, the Middle Combination Room of St John's College, Cambridge
• Summit Bechtel Reserve, a high adventure base owned by Scouting America
• JoJo's Bizarre Adventure: Steel Ball Run, manga written by Hirohiko Araki
• Saibai Island Airport, IATA airport code "SBR"

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