GSR

GSR may refer to:

Science and technology

• Galvanic skin response, a method to understand various types of activity in certain parts of the body
• Gens Sound Record, a sound format for Sega Genesis music
• Cisco 12000 or Gigabit Switch Router, an Internet router made by Cisco Systems
• Global Set/Reset, a signal in a field-programmable gate array

Railways

• Great Southern Rail (Australia), whose mainline spans the entire continent of Australia, connecting Sydney with Perth
• Great Southern Railway (Western Australia), which connects Beverley and Albany
• Great Southern Railways, which operated all rails within the Irish Free State from 1925 through 1945
• Gwili Steam Railway, a steam heritage railway in Wales

Other uses

• Gas Safe Register, a registration scheme based in the United Kingdom
• Glenn Seton Racing, an Australian V8 Supercar motor racing team
• Goshen Scout Reservation, a Boy Scout reservation in Virginia
• Grammata Serica Recensa, a dictionary of Old Chinese by the Swedish sinologist Bernard Karlgren
• Acura Integra GS-R, a performance model of the Acura Integra
• Grand Sport Rally- a trim level of Mitsubishi Lancer/ Lancer Evolution
• Gunshot residue, trace particles left behind by a gun being fired
• SIG Sauer GSR "Granite Series Rail", an M1911-based pistol by SIG Sauer, a Swiss-German weapons manufacturer
• Grand Sierra Resort, a hotel and casino located in Reno, Nevada
• GSR, a series of bass guitars by Ibanez
• Ground Surveillance Radar, in radar MASINT
• General Service Representative, an elected service position in Alcoholics Anonymous
• Gold–Silver Ratio, the ratio of the cost between Gold and Silver