AHD, a three-letter abbreviation, may refer to:

• The American Heritage Dictionary of the English Language
• Anti Handling Device, part of a landmine
• Advanced Health Directive, a type of power of attorney
• AHD, the National Rail code for Ashtead railway station
• Audio High Density, the audio-only variant of the VHD video format
• Australian Height Datum
• Advanced Hockey Development
• Academic Honors Diploma

AHD | AHD