UDF
The abbreviation UDF stands for:
- Universal Disk Format , a platform-independent file system
- User Defined Function , a user defined function
- Uniqueness Database File , a text file for unattended software installations
- UHF Direction Finder, a radio direction finding procedure to a QDM to determine
- Unducted Fan , a type of engine in aircraft
- Union Defense Force , a former Union Army of South Africa
- Ulster Defense Force in Ireland
- Union démocratique fédérale, French for the Federal Democratic Union , a political party in Switzerland
- Union pour la démocratie française , a political party alliance in France
- United Democratic Front (India)
- United Democratic Front (Malawi)
- United Democratic Front (Namibia)
- United Democratic Front (South Africa)
- United Front for Democratic Change , a rebel group in Chad
- Unrecognized by Freundesland , illegal adventure travel
