DHD may refer to:
- Dima Halim Daoga, an armed militant group in Assam, India
- Deadline Hollywood Daily, an online magazine about the infotainment industry
- Digital High Definition, a discontinued high-density optical disc format
- Dial-Home Device, a piece of technology, a pedestal with constellation glyph buttons used to tell the Stargate which planet to lock on to, hence the phrase "Dial Home Device", from science-fiction TV series Stargate SG-1
- Dihydrodydrogesterone, a powerful progestogen created during the metabolization of Dydrogesterone.