VDR may refer to: Vdr, an archaic abbreviation for "van der" vdR, abbreviation for "van der Roest", a family name of Dutch origin Vandalur railway station, Chennai, Tamil Nadu, India (station code) Verein Deutscher Rosenfreunde, the Union of German Friends of Roses Vertical dimension at rest, a mandibular position used in dentistry to estimate vertical dimension of occlusion Virginia Declaration of Rights Virtual data room Vitamin D receptor Video Disk Recorder, also known as Linux VDR, a software to record and store digital video on a Linux computer Voltage-dependent resistor Volunteer Disaster Responder Voyage Data Recorder, an electronic device on ships that records navigational status for later accident investigation (a type of black box) Vehicle data recorder, an electronic device in automotive units that records OBDII CAN BUS data Voltage Divider Rule, or Voltage Division Rule, a fundamental of electronics, that a point between multiple resistors will be at a voltage based on the ratio of resistor values.