| UDU | Uduk: a language of Ethiopia
| Others |
| UDU | Ultimate Driving Universe
| Others |
| UDU | Uma Data Unit
| Others |
| UDU | Umuaka Development Union
| Others |
| UDU | Understand Down Under
| Others |
| UDU | Underwater Demolition Unit
| Others |
| UDU | Underwater Demolitions Unit
| Others |
| UDU | Uniformity of Dosage Units
| Others |
| UDU | Unione Degli
| Others |
| UDU | Unione Degli Universitari
| Others |
| UDU | Unionist Democratic Union
| Others |
| UDU | Unpermitted Dwelling Units
| Others |
| UDU | Upper Division Unarticulated
| Others |
| UDU | Urban Dictionary University
| Others |
| UDU | Urban Dwelling Unit
| Others |