UDR
UDR stands for:
- Abbreviations of the names of the French Gaullist party, see Union pour la Nouvelle République
- Union des Démocrates pour la Ve République , name of the list in the French parliamentary elections in 1967
- Union pour la défense de la République , name of the party from 1968 to 1971
- Union des démocrates pour la République , name of the party from 1971 to 1976
- Union for Democracy and Republic , a political party in Niger
- Udaipur Airport in India (IATA code)
- Ulster Defense Regiment , an infantry regiment of the British Army in Northern Ireland