DDJ

• Deacons for Defense and Justice, an African-American self-defense group
• DDJ (Deputy District Judge)
• a judicial title in the judiciary of England and Wales
• a judicial title in the District Court (Hong Kong)

• Dr. Dobb's Journal, a computer science and programming magazine and journal
• Data-driven journalism
• Data-dependent jitter

• Djaru language (ISO 639 language code ddj)
• Dum Dum Junction railway station (station code DDJ), Dum Dum, West Bengal India; a train station
• Pioneer DDJ, a DJ controller series from Pioneer; see Pioneer DJ

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• DDJ1, a high-speed electrical multiple unit train class for China Railways
• Plasmin (1DDJ), an enzyme
• {{srt}}
• DJ (disambiguation)
• JDD (disambiguation)
• JJD
• DJJ (disambiguation)

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