| Acronym | Definition |
|---|
| OBG | Oxford Business Group (various locations) |
| OBG | Old But Gold (gaming) |
| OBG | Ohio Business Gateway (Columbus, OH) |
| OBG | Ordnungsbehördengesetz (German police law) |
| OBG | Ospedale Bambino Gesu (Italian: Child Jesus Hospital) |
| OBG | Overburden Gradient (geology) |
| OBG | Ormeau Baths Gallery (Northern Ireland; UK) |
| OBG | Old Brown Glue (liquid adhesive) |
| OBG | Oldie But Goodie |
| OBG | Oil Buyers' Guide |
| OBG | Oregon Brewers Guild (Portland, OR) |
| OBG | Oil-Based Gel (pens) |
| OBG | Office Business Gateway (Microsoft) |
| OBG | Open Bottom Girdle |
| OBG | Operating by the Guidelines (Six Sigma business management strategy) |
| OBG | Old Burying Ground (various locations) |
| OBG | Operation Business Group |
| OBG | Original Bunny Gang (band) |
| OBG | Original Baby Gangsta (Crips rank; gang) |
| OBG | Onlay Bone Graft (dental procedure) |
| OBG | Oh By Golly |