BDZ

BDZ may refer to:

• Benzodiazepines, a class of drugs
• Bulgarian State Railways (Balgarski Darzhavni Zheleznitsi in Bulgarian)
• BDZ (album), a 2018 album by Twice
• "BDZ" (song), a song from the album
• bdz, the ISO 639-3 code of the Badeshi language

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