RDM
The abbreviation RDM may refer to:
- Radar Doppler Multifunction, a stopgap radar for the Mirage 2000 French fighter, also known as the Cyrano 5, an evolution of the Cyrano 4 used on the older Mirage F-1
- Radarman, a former rank of the U.S. Navy
- Random Data Modeling, the ability to model randomized data points
- Raw Disk Mapping, a hard disk's mapping for use by a virtual disk image
- Red Digital Magazines, (.RDM) - in reference to the "Red-One Camera"
- Red Dragon Movement, a now defunct Welsh nationalist organization
- Red Mage, a character class from Dungeons & Dragons and Final Fantasy
- Reduced density matrix, in the Contracted Schrödinger Equation method for finding the electronic structure of molecules
- Reliably Delivered Messages, Microsoft's implementation of the Pragmatic General Multicast protocol
- Remote Device Management, an electronic protocol used in stage lighting
- Remotely Deliverable Mine
- Requirements Definition and Management, an activity in systems engineering and technology acquisition processes
- Results Data Model, for RMS software RiskLink
- Reusable Device Module
- Rhythms del Mundo, a nonprofit salsa and mambo album from an all-star cast of Cuban musicians
- Riding Mill railway station, England; National Rail station code RDM
- Roberto Di Matteo, ex-Italian football international
- Roberts Field Airport (IATA airport code), an airport that serves the cities of Redmond and Bend in Oregon
- Ronald Dowl Moore, the creator of the new Battlestar Galactica series (sometimes dubbed Battlestar Galactica (RDM)), as well as an important member of the Star Trek: Deep Space Nine writing staff
- Rotterdamsche Droogdok Maatschappij, a shipbuilding and repair company in Rotterdam in the Netherlands
- Rovescio della Medaglia, an Italian symphonic rock band
- Roy D. Mercer, a prank-calling radio character