| OIB | Ouachita Independent Bank | 瓦希塔独立银行 |
| OIB | Ozellestirme Idaresi Baskanligi | Ozellestirme Idaresi Baskanligi先生 |
| OIB | Oil Injector Button | 喷油器按钮 |
| OIB | Osobni Indentifikacijski Broj (Croatia) | Osobni Indentifikacijski Broj（克罗地亚） |
| OIB | Office for Infrastructure and Logistics in Brussels (EU) | 布鲁塞尔基础设施和物流办公室（欧盟） |
| OIB | Operator Initiated Bit (built in test) | 操作员启动位（内置测试） |
| OIB | Ocean Isle Beach | 海洋岛海滩 |
| OIB | Ok, I'm Back (IRC) | 好的,我回来(IRC) |
| OIB | österreichisches Institut fÜr Bautechnik (Austria) | österreichisches Institut fÜr Bautechnik (Austria) |
| OIB | Ocean Island Basalt | 洋岛玄武岩 |
| OIB | Oceanic Island Basalt | 大洋岛玄武岩 |
| OIB | Opportunities In Business (business brokerage in Minneapolis, MN) | 商业机会（明尼阿波利斯的商业经纪） |
| OIB | Objects in Bioinformatics | 生物信息学中的对象 |