Harry Potter and the Deathly Hallows

DH is an initialism that can stand for various things including:

DH is also considered to be one of the letters of the Albanian alphabet.

Degrees German hardness (°dH), a scale for measuring the mineral content in water samples

Downhill cycling

Diffie-Hellman cryptographic key exchange algorithm

Denavit-Hartenberg link frame convention: coordinate representation of robotic device

Department of Health (United Kingdom) the Department of Health of the UK Government

Downhill skiing

Division d'Honneur, the regional leagues corresponding to the sixth level of French football

DH postcode area in the United Kingdom

Digraph dh representing voiced dental fricative /ð/ in scores of languages, or as a voiced dental aspirated plosive (stop, tenue) sound /dʰ/ in Sanskrit, Hindi, Aryan, and Proto-Indo-European.

Dh, DH or Dhs are unofficial currency codes for the national currency of the United Arab Emirates, the Dirham

Dermatitis herpetiformis, the skin disease

Desperate Housewives, a TV show

DH Press, the imprint of Dark Horse Comics

DH Smith, the ring name for WWE pro wrestler Harry Smith

Designated hitter, in baseball

Delaware and Hudson Railroad (AAR reporting marks DH)

the IATA code for Independence Air from DH.

decision height, the minimum height above the runway used by an aircraft pilot for landing decisions.