UID

UID is an abbreviation for:

• Sales tax identification number in Austria (abbreviation in Germany: "USt-IdNr." )
• Union Internationaler Democrats , a lobby organization of the Turkish ruling party AKP in Europe and especially Germany until May 20, 2018 under the name Union European-Turkish Democrats
• Company identification number in Switzerland
• User identifier , the identifier of a user account, see user identification
• User interface design , interface design between man and machine, see interface design
• Unique identifier , a serial number stored on an RFID tag

This is a disambiguation page for differentiating between several terms identified with the same word.