| OUI | Ban Houei Sai, Laos
| Others |
| OUI | French: Yes
| Others |
| OUI | Oduduwa University, Ipetumodu - Osun State
| Others |
| OUI | Office Update Inventory
| Others |
| OUI | Officer under investigation
| Others |
| OUI | Offline Usenet Interface
| Others |
| OUI | Open Usability Interface
| Others |
| OUI | Operating Under The Influence
| Others |
| OUI | Operation Under The Influence
| Others |
| OUI | Operator User Interface
| Others |
| OUI | Opportunities Unlimited Inc
| Others |
| OUI | Opportunities Unlimited, Inc.
| Others |
| OUI | Optimizely User Interface
| Others |
| OUI | Oracle Universal Installer
| Others |
| OUI | Organisationally Unique Identifier
| Others |
| OUI | Organizacion Universitaria Interamericana
| Others |
| OUI | Organization Of Ufo Investigators
| Others |
| OUI | Organizational Unique Identifier
| Others |
| OUI | Organizational Unique Identifiers
| Others |
| OUI | Organizational Unit Identifier
| Others |
| OUI | Organizationally Unique Identifer
| Others |
| OUI | Organizationally Unique Identifier
| Others |
| OUI | Overflow Underflow Interrupt
| Others |