OSR
OSR stands for:
- OEM service release
- OSR # 1 (Oxidative Stress Relief), a chelating agent
- Ostrava Airport in Czech Republic (IATA code)
- Camillians , a male Catholic order
- Oberschulrat , see Schulrat (title)
- Supreme Sanitary Council , medical-scientific body in Austria
- On-stack replacement , process of hotspot optimization of software
- Orchester de la Suisse Romande , Swiss Symphony Orchestra
- Oversampling Ratio , English for "ratio in the sampling rate conversion "
- Over (the) shoulder restraint , English for shoulderbaron rides , especially roller coasters , also OTSR
