| UDO | Udomxay, Laos
| Others |
| UDO | Ultra Density Optical
| Others |
| UDO | Ultra Density Optical storage
| Others |
| UDO | UmweltDaten Objekte
| Others |
| UDO | Unbound Declarative Object
| Others |
| UDO | Undelivered Order
| Others |
| UDO | Unendingly Deliberated Over
| Others |
| UDO | Uniface Development Object
| Others |
| UDO | Uniface Document Object
| Others |
| UDO | Unified Development Ordinance
| Others |
| UDO | Universal Data Object
| Others |
| UDO | Universal Document Object
| Others |
| UDO | Universidad de Oriente
| Others |
| UDO | University Development Office
| Others |
| UDO | University of Derby Online
| Others |
| UDO | User Defined Object
| Others |
| UDO | User Defined Opcode
| Others |