English abbreviations from ob to obgyn
- ob (obiit (Latin, " he died"))
- Ob. (Obiit ("Died"))
- OBA (Oxygen Breathing Apparatus)
- OBB (Oklahoma Business Bulletin)
- OBC (Obock Airport)
- OBCS (Ocean Bottom Cable System)
- OBD (Obano Airport)
- OBDD (Ordered Binary Decision Diagram)
- OBDTL (OBDT Log)
- OBE (Officer of the Order of the British Empire)
- OBEM (Object-Based Equipment Model)
- OBEMLA (Office of Bilingual Education and Minority Language Affairs)
- OBERF (Out of Body Experience Research Foundation)
- OBEVA (OBDT Evaluation Report)
- OBF (Oberpfaffenhofen Airport)
- OBFCS (On-Board Fire Control System)
- OBFS (Offshore Bulk Fuel System)
- OB-GYN (Obstetrics and gynecology)