HDM

HDM may stand for:

• Holistic Data Management
• Harvard Dictionary of Music
• His Dark Materials, a trilogy of novels written by Philip Pullman
• Help desk Manager
• Hot dark matter, a form of dark matter
• Haagsche Delftsche Mixed, a Dutch field hockey club based in Den Haag
• Hardware Displacement Mapping for 3D graphics video display
• Hamadan Airport in Hamadan, Iran
• House dust mite