MMD

MMD may refer to:

Science and technology

 * Molar mass distribution, in a polymer
 * MultiMarkdown, a markup language
 * Multiple dispatch, a feature of some programming languages
 * MMD, a loudspeaker parameter of the Thiele/Small model equivalent
 * MDIO Manageable Devices, target devices that are being managed by the Management Data Clock in Management Data Input/Output (MDIO)
 * Mass median diameter, in particle-size distribution

Organisations

 * Mercury Musical Developments, an arts organisation in the United Kingdom
 * Movement for Multi-Party Democracy, a Zambian political party
 * Microwave Measurements Division, of Anritsu corporation
 * Multimedia Displays, a company of TPV Technology

Other uses

 * 2500 in Roman numerals
 * Merchant Mariner's Document
 * Mid Manair Dam, a dam located in Telangana, India
 * MikuMikuDance, a free 3D dance animation program
 * Minami-Daito Airport (IATA code)
 * Municipal Market Data, a yield curve of AAA-rated bonds issued by U.S. states
 * Murder mystery dinner
 * Michelle Marquez Dee (born 1995), Filipino actress, beauty pageant titleholder and the daughter of Miss International 1979, Melanie Marquez
 * A US Navy hull classification symbol: Fast minelayer (MMD)