English abbreviations from ososs to oss
- OSOSS (Open Standards and Open Source Software)
- OSOTPBOIAS (One Sec, On The Phone, Be Off In A Sec)
- OSP (Off Street Parking)
- OSPA (Operations Security Professional's Association site of OSPA)
- OSPCA (Ontario Society for the Prevention of Cruelty to Animals)
- OSPF (Open Shortest Path First)
- OSPFW (Online Service Portal FrameWork)
- OSPG (Overseas Security Policy Group)
- OSPL (open space and park land)
- OSQ (Open Source Quarterly)
- OSQA (Open Source Question and Answer system)
- OSR (Occupational Survey Report)
- OSRAP (Optimum Stockage Requirements Analysis Program)
- OSRD (Open Source Research and Development)
- OSRH (Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia))
- OSRI (Originating Station Routing Indicator)
- OSRM (Office of Standard Reference Materials)
- OSRS (Ohio Spring Race Series)
- OSRTC (Ontario Sound Recording Tax Credit)
- OSS (Operations Support Squadron)