| Acronym | Definition |
|---|
| MDR | Minimum Daily Requirement (Diet & Nutrition) |
| MDR | Multidrug-Resistant |
| MDR | Mitteldeutscher Rundfunk (German Radio and TV Station) |
| MDR | Multi Drug Resistance (of a disease; medical) |
| MDR | Madera (Amtrak station code; Madera, CA) |
| MDR | Mort de Rire (French: Died of Laughing) |
| MDR | Medical Device Reporting |
| MDR | Main Dining Room |
| MDR | Marina del Rey (Southern California) |
| MDR | Market Data Retrieval |
| MDR | Managed Detection and Response (cybersecurity service; various companies) |
| MDR | Monatsschrift für Deutsches Recht (German magazine) |
| MDR | Multi Channel Data Recorder |
| MDR | Medium Dynamic Range |
| MDR | Mini Disc Recorder |
| MDR | Multiservices Dynamic Reservation |
| MDR | Meta Data Registries |
| MDR | Multimedia Data Retrieval |
| MDR | Modular Data Router |
| MDR | Multi Decrypt Receiver |
| MDR | Motor Driven Roller (conveyors) |
| MDR | Medical Devices Regulations (various locations) |
| MDR | Master of Dispute Resolution (Pepperdine University School of Law; Malibu, CA) |
| MDR | Manifestation Determination Review (special education hearing; various locations) |
| MDR | Maternal Death Rate |
| MDR | Memories, Dreams, Reflections (Carl Jung book) |
| MDR | Mouvement Démocratique Républicain (Democratic Republican Movement, Rwanda) |
| MDR | Multifactor Dimensionality Reduction |
| MDR | Medium Data Rate |
| MDR | Mission Definition Review (various organizations) |
| MDR | Memory Data Register |
| MDR | Making Dreams Reality |
| MDR | Meta Data Repository |
| MDR | Mandatory Declassification Review |
| MDR | Movement for the Defense of the Republic (Cameroon) |
| MDR | Merchant Discount Rate |
| MDR | Mission Data Recorder |
| MDR | Multiple Dwelling Registration |
| MDR | Manhattan Diagnostic Radiology |
| MDR | Minimum Design Requirement |
| MDR | Major District Road (India) |
| MDR | Membership Drive Rally |
| MDR | Milestone Decision Review |
| MDR | Militaire du Rang (all grades under sergeant in the French army) |
| MDR | Mitglied des Reichstags (German: member of parliament; before 1933) |
| MDR | Master Data Record |
| MDR | Mortgage Default Rate |
| MDR | Mercury Displacement Relay |
| MDR | Maintenance Data Recorder (aviation; records equipment discrepancies during flight) |
| MDR | Marginal Deduction Rate (UK) |
| MDR | Maximum Detectable Rigidity (spectrometer) |
| MDR | Mission Design Review |
| MDR | Miniature Donkey Registry |
| MDR | Missed Detection Rate |
| MDR | Master Document Register |
| MDR | Major Daily Rental (vehicles) |
| MDR | Mini-Disc Recordable |
| MDR | Medical Device Record |
| MDR | Materiel Deficiency Report |
| MDR | Microcircuit Device Reliability |
| MDR | Manufacturing Data Report |
| MDR | Minimum Design Rule(s) |
| MDR | Median Detection Range |
| MDR | Midi Data Recorder (Yamaha) |
| MDR | Magic Decoder Ring |
| MDR | Maximum Distance with Respect to Rank |
| MDR | Manufacturer Defect Report |
| MDR | Morrendo de Rir (Portuguese) |
| MDR | Monthly Demand Rate |
| MDR | Management, Development and Research Co, Ltd |
| MDR | Meteorological Doppler Radar |
| MDR | Maintainability Demonstration Report |
| MDR | Mission Data Readout (satellite operations) |
| MDR | Maintenance Data Report/ing |
| MDR | Mission Data Review |
| MDR | Mean Detection Range |
| MDR | Minimum Display Range (US Air Force) |
| MDR | Mount Device Request |
| MDR | MHS (Military Health System) Data Repository (US DoD) |
| MDR | Million Dollar Roundtable (insurance industry) |
| MDR | Microwave Dielectric Resonator |
| MDR | Monthly Document Report |
| MDR | Modal Damping Ratio |
| MDR | Machinedrijver (Dutch) |
| MDR | Management Data Report |
| MDR | Movimiento para la de Defensa de la República |
| MDR | Mandatory Device Reporting Program (Center for Device and Radiological Health; US FDA) |
| MDR | Main Distribution Room |
| MDR | Maximum Deceleration Rate |