English abbreviations from osd to osi
- OSD (U.S. Office of the Secretary of Defense|| On-screen Display)
- OS&D (Over, Short & Damage (Report))
- OSDA (Old School Derby Association)
- OSDH (Optical Shubnikhov-DeHaas effect)
- OSDL (Open Source Development Labs)
- OSDN (Open Source Developer Network)
- OSE (Own Separate Entrance)
- OSEP (Office of Special Education Programs)
- OSERA (Ohio Scientific Education and Research Association)
- OSERS (U.S. Department of Education Office of Special Education and Rehabilitative Services)
- OSETI (Optical SETI also Optical SETI)
- OSF (Ostafyevo International Airport)
- OSFB (Oregon School for the Blind)
- OSFC (Ohio Select Futbol Club)
- O.S.F.C. (Ordinis Sancti Francisci Capuccini (Franciscan Capuchins))
- O.S.F.S. (Oblati Sancti Francisci Salesii (Oblate Fathers of St. Francis of Sales))
- OSG (Object Systems Group)
- OSGA (Ontario Senior Games Association)
- OSGCC (Owen Sound Golf and Country Club)
- OSGi (Open Source Gateway intiative)
- OSGP (Ohio Supercomputer Graphics Project)
- OSH (Wittman Regional Airport)
- O.S.H. (Ordo [Eremitarum] Sancti Hieronymi (Hieronymites))
- OSHA (Occupational Safety and Health Administration)
- OSHC (Outside School Hours Care)
- OSHCC (Outside School Hours Care Center)
- OSHCCs (Outside-School-Hours Care Centers)
- OSI (Open Source Initiative)
