DHD may refer to: Dima Halam Daogah, an armed militant group in Assam, India Deadline Hollywood Daily, an online magazine about the entertainment industry Digital High Definition or HD DVD, a discontinued high-density optical disc format Dial-Home Device, technology from the science-fiction TV series Stargate SG-1 used to tell the Stargate which planet to lock on to Dihydrodydrogesterone, a progestogen and metabolite of dydrogesterone