SSDM

SSDM may refer to:


 * Seabed Survey Data Model, a format for geographic information system data, developed by the International Association of Oil & Gas Producers
 * Semantic service discovery mechanisms, a component of Task Computing Frameworks in computer programming
 * Short stick defensive midfielder, a player position in field lacrosse
 * South Sudan Democratic Movement, a rebel organisation in South Sudan
 * Stochastic Signal Density Modulation, a novel power modulation technique primarily for LED power control